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EXAEDRE field campaign is underway in Corsica
Posted 18.09.2018
Started September 13, 2018, the field campaign of the EXAEDRE project (see below) is underway in Corsica. The research aircraft F-20 is operated by SAFIRE from Solenzara airbase. Onboard, cloud radar Rasta (LATMOS) acquires data on cloud dynamics and microphysics above and under the aircraft, while microphysics probes (LaMP) measure the size and shape of the ice crystals. Instruments developed by ONERA measure the electric field in the cloud environment to document the conditions in which flashes initiate and propagate. Ground instrumentation includes the Saetta (LA) and Meteorage lightning detection networks, as well as the radars of Meteo-France operational network to provide real-time guidance during the flights. The campaign is to last one month, until October 12, 2018. Already two scientific flights have been successfully performed. Access the press release and press kit (in French) for more details.
Contact: Eric Defer (Laboratoire d'Aerologie)

Spring maintenance of the SAETTA stations
Posted 27.04.2018
From March 26 to 31, the SAETTA Lightning Mapping Array team was in Corsica for the maintenance of the network after a rather rigorous winter. After 4 years of operation, the station batteries were carried and replaced on site to secure SAETTA operation in support of the upcoming EXAEDRE field campaign, planned in September-October 2018 over Corsica. EXAEDRE - EXploiting new Atmospheric Electricity Data for Research and the Environment - contributes to the HyMeX ST-Lightning and TS4a (Corsican site) activities. Its scientific objectives are an observational- and modeling-based characterization of the electrical activity in north-western Mediterranean storms, together with an assessment of the potential of lightning information for a better monitoring of thunderstorms.
Contacts: Eric Defer, Sylvain Coquillat, Dominique Lambert (Laboratoire d'Aerologie)

Intense deep water formation in winter 2018: would the deep waters be warmer, saltier than ever ?
Posted 26.04.2018
In early 2018, an intense deep open sea convection occurred in the northwestern Mediterranean basin ending a period of several years of weak convective events in that region since the winter 2012-2013 (HYMEX SOP2). Thanks to autonomous platforms operated through the national Observing System MOOSE (gliders, Argo floats, ODAS buoys) that transfer near real time data, intense winds and cold air temperature were observed in February-March 2018 in the Gulf of Lion and the Ligurian Sea.

This cold winter induced a strong evaporation and heat loss increasing the density of the surface layer to values greater than the density of the waters below and triggering oceanic convection to intermediate and great depths. This intense mixing was revealed by the mixed layer depth (MLD). It started to reach great depths in mid-February with a MLD reaching the maximum depth of the glider (1000 m, Fig. 1B) and the Argo floats monitoring confirms the mixing has reached great depths at the end of February (Fig. 1C).

This intense mixing of the surface cool and fresh Atlantic Waters (AW), with the Levantine Intermediate Water (LIW), forms the Western Mediterranean Deep Waters (WMDW) in a region of about 100 km in diameter where the LIW, usually characterized by a maximum of T and S and a minimum of O2 at 300-700 m, is replaced by WMDW presenting characteristics that are less warm, less salty and more oxygenated that eventually mix with the surrounding LIW during the mixed patch breakup. Due to the absence of intense deep convection during the previous winters (MLD < 1000 m from 2014 to 2017), this has not happened for several years and intermediate waters have stored significant amounts of heat and salt coming from the Eastern basin. Consequently, the convection episode 2018 ventilated completely the LIW layer (up to 10-15 µmol/kg in the first 1000 m layer) and the newly-formed deep waters characteristics might be warmer, saltier than ever (Margirier et al., EGU General Assembly 2018).

The WMDW has been becoming warmer and saltier since it has been first observed in the 1970s but this violent increase in temperature and salinity is similar to the abrupt changes in newly-formed deep water properties that were observed only in 2005 and in 2006 and is equivalent to 10 years of the general warming/salting of the deep waters. For example, in 2013, we observed the newly formed WMDW characterized by a potential temperature of 12.94 °C and a salinity of 38.48 (Testor et al., 2018). Due to this recent deep convection, autonomous platforms measured respectively 12.95 °C and 38.5 in deep waters which is markedly higher than the deep layers warming and saline trends expected in the Western Mediterranean (Vargas-Yanez et al., 2017). Consequently, this event will have without any doubt a very significant impact on the characteristics of the deep layers.

Such observation strategy demonstrates the importance to sustain an operational observing system in this dynamic region of the Mediterranean Sea which is able to reveal rapid and intense event like the open sea convection. Finally, the next deep mooring lines maintenance during the MOOSE-GE cruise (May 13th to June 7th) will reveal if the convection has reached the bottom and the impact of such convection on the deep layers and marine ecosystem.

Figure 1: A-Trajectories of the Slocum glider POTAME along the endurance line MOOSET02-18 and the Argo floats 6902803 and 6902804. B-Vertical section of temperature, salinity, density, oxygen (adjusted) and chlorophyll-a during the glider trajectory. The grey dash lines indicate the different way-points. The Lion mooring located in the center of the Gulf of Lion is noted in blue. C-Argo floats time series section of temperature, salinity and oxygen (adjusted). The MLD was estimated with the density threshold 0.01 kg/m3 (white line). All data are raw values.

References cited:
Margirier, F. et al., 2018. The next Deep Waters formed in the Northwestern Mediterranean Sea will be warmer and saltier than ever ! EGU General Assembly 2018, Vienna.
Testor, P. et al., 2018. Multiscale Observations of Deep Convection in the Northwestern Mediterranean Sea during Winter 2012-2013 Using Multiple Platforms, Journal of Geophysical Research: Oceans, doi:10.1002/2016jc012671.
Vargas-Yanez, M. et al., 2017. Updating temperature and salinity mean values and trends in the Western Mediterranean : The RADMED project. Progress in Oceanography, Volume 157, doi:10.1016/j.pocean.2017.09.004.

Contacts: Laurent Coppola (LOV), Felix Margirier (LOCEAN), Pierre Testor (LOCEAN), Laurent Mortier (LOCEAN), Jeanne Melkonian (DT-INSU), Hassane Benabdelmouemene (DT-INSU), Paul Dasi (DT-INSU), Patrick Raimbault (MIO)

Hydrological cycle in the Mediterranean - ACP/AMT/GMD/HESS/NHESS/OS inter-journal special issue
Posted 30.03.2018
A HyMeX special issue is jointly organized between Atmospheric Chemistry and Physics, Atmospheric Measurement Techniques, Geoscientific Model Development, Hydrology and Earth System Sciences, Natural Hazards and Earth System Sciences, and Ocean Science. Submission is open from April 1, 2018 to December 31, 2021. The details on the submission process can be found here.
Contact: Veronique Ducrocq (CNRM)

2nd MedCORDEX-Baltic Earth Joint workshop, Mallorca, 14-16th March 2018
Posted 18.12.2017
The aim of this workshop is to share recent progress in the understanding of regional climate variability with special focus on coupled effects between sea, atmosphere, land and anthroposphere. In this workshop, we will focus on European seas and their catchment areas like the Mediterranean Sea, Black Sea, North Sea, Baltic Sea and Arctic Ocean - highly sensitive areas where global models fail to give reliable information about changing climate because key processes are not properly resolved. Contributions related to any aspect of the description and modelling of regional climate are welcome. Some of the topics addressed in the workshop will be the description of present and future regional climates with special emphasis on the use of regional reanalyses and ocean-atmosphere coupled models, the development and evaluation of regional climate system models and the assessment of extreme and high impact events. The details of the workshop can be found in the attached file and in www.baltic.earth/mallorca2018. Travel grants will be available for early career scientists.
Contact: Gabriel Jorda (UIB)

11th HyMeX Workshop, 29 May - 2 June 2018, Lecce, Italy
Updated 14.12.2017
The 11th HyMeX Workshop will take place from Tuesday 29 May to Saturday 02 June 2018 in Lecce, Italy. It is organized by the Institute of Atmospheric Sciences and Climate of the Italian National Research Council (ISAC-CNR) in collaboration with the University of Salento and the Euro-Mediterranean Center on Climate Change (CMCC). The workshop programme will consist in plenary and parallel sessions, both oral and poster, meetings of the Science Teams, as well as meetings for the preparation of the field campaigns of the next three years. The call is currently open for contributions in the HyMeX science topics. See the second announcement and more details about the workshop organisation.

Special issue on Environmental changes and hazards in the Dead Sea region
Posted 08.09.2017
A new special issue entitled "Environmental changes and hazards in the Dead Sea region" is jointly organized between Natural Hazards and Earth System Sciences (NHESS), Atmospheric Chemistry and Physics (ACP), Hydrology and Earth System Sciences (HESS), and Solid Earth (SE). The objective of the SI is to compile research and recent advances on the atmospheric, hydrological, and geophysical processes and dynamics of relevance for the Dead Sea region and the middle East. It brings the Dead Sea region into focus since global and regional changes in the Earth system concur locally and impact humans in a unique way. Manuscripts to be included in this issue could address the processes of sinkhole genesis, groundwater recharge and movement, flash flooding as well as seismic or severe meteorological events and could include topics such as the quantification of the water budget components. In addition, the special issue intends to include contributions dealing with aspects of assessing related risk (or its main components like hazard, exposure and vulnerability) as well as studies aiming at indicating how research could assist in efficient risk mitigation, remediation strategies as well as to an efficient implementation of early warning systems. Within the scope of the special issue are likewise larger scale processes in the atmosphere, hydrosphere and lithosphere in the eastern Mediterranean being affected by, or affecting the core region of the Dead Sea. Contributions shall be submitted online, selecting the special issue, by 30 June 2018.
Editor(s): Maria Kanakidou (UOC), Christoph Kottmeier (KIT), and Pinhas Alpert (TAU)

10th HyMeX Workshop, 4-7 July 2017, Barcelona, Spain
Updated 08.09.2017
The 10th hyMeX workshop has been hosted by the Water Research Institute (IdRA) and the Faculty of Physics from the University of Barcelona, from 4 to 7 July 2017. Short abstracts for oral or poster presentations had been invited on heavy precipitation, flash-flood and vulnerabilities, Mediterranean cyclones, ocean circulation and dense water formation, droughts and water resources. Contributions on recent advances in prediction and management of the water cycle, its link with renewable energy, its related hazards and their impacts, from nowcasting to climate scales, were also welcome. Details on the workshop scientific programme are available here.

HyMeX SOP2 paper released in Oceanography
Updated 16.03.2017
"HyMeX-SOP2: The field campaign dedicated to dense water formation in the northwestern Mediterranean" by Estournel et al. has been publised in Oceanography, Vol. 29(4). SOP2, January 27-March 15, 2013) was dedicated to the study of dense water formation in the Gulf of Lion. The paper outlines the deep convection of winter 2012-2013 and the meteorological conditions that produced it. Alternating phases of mixing and restratification are related to periods of high and low heat losses, respectively. High-resolution, realistic, three-dimensional models are used to assess the intricacy of buoyancy fluxes, horizontal advection, and convective processes. At the submesoscale, vertical velocities resulting from symmetric instabilities of the density front bounding the convection zone are crucial for ventilating the deep ocean. Finally, concomitant atmospheric and oceanic data extracted from the comprehensive SOP2 data set highlight the rapid, coupled evolution of oceanic and atmospheric boundary layer characteristics during a strong wind event.

Dense water formations in the North Western Mediterranean: from the physical forcings to the biogeochemical consequences
Updated 16.03.2017
The North Western Mediterranean is a specific region playing a key role for the hydrology and biogeochemistry of the whole basin due to (1) the deep convection that redistribute organic and inorganic matters all over the water column, and (2) the subsequent intense spring bloom that represents the most important biological process of the basin at the origin of carbon exports. This joint special section of JGR:Atmospheres & JGR:Oceans compiles the results of the June 2012 to September 2013 observation and modelling effort conducted by the MerMeX, HyMeX and MOOSE components of the MISTRALS programme. They focus on the impact of winter convection on the water cycle, redistribution and stoichiometry of matter, development and succession of biological community over an annual cycle, and their potential evolutions. Ship-based operations, autonomous platforms (gliders, Bio-Argo floats, mooring lines), remote-sensing and coupled modelling were combined to better characterize and understand the NWM dense water formation phenomena, including the associated physical processes, and the biogeochemical response of the pelagic ecosystem.
See the articles in this joint special section of JGR:Atmospheres & JGR:Oceans. Guest Editors: Pascal Conan (LOMIC), Fabrizio D'Ortenzio (LOV), Xavier Durrieu de Madron (CEFREM), Claude Estournel (LA), Pierre Testor (LOCEAN)

HyMeX SOP1 results released in a special issue of QJRMS: "Advances in understanding and forecasting of heavy precipitation in the Mediterranean through the HyMeX SOP1 field campaign"
Posted 25.08.2016
This special issue of the Quarterly Journal of the Meteorological Society presents a wide range of studies carried out over the last three years exploiting the exceptional dataset of observations and model outputs collected during SOP1. The special issue gathers 31 articles describing advances in observations and their use in characterizing HPE, advances in process understanding, including initiation and sustenance of deep convection, MCS dynamics and microphysics, water vapour origin and transport, and results about predictability of HPE from numerical weather prediction (NWP) and regional climate models.
Issue freely available at QJRMS - Invited editors: Veronique Ducrocq (CNRM), Silvio Davolio (CNR-ISAC), Rossella Ferretti (DMI, CETEMPS), Cyrille Flamant (LATMOS/IPSL), Victor Homar Santaner (UIB), Norbert Kalthoff (KIT), Evelyne Richard (LA), Heini Wernli (ETH)

HyMeX Workshop on Drought and Water Resources - 5-6 April 2016, Zaragoza, Spain
Updated 24.03.2016
The aim of this workshop is to enhance the scientific work of the HyMeX Water Resources and Drought Science Team. The meeting will be held at the central office of the Spanish National Research Council (CSIC) in Zaragoza. The main objectives are to present the state-of-the-art in drought and water resources research, coordinate and strengthen the HyMeX community in this area and discuss the future lines of work.
More details are on the workshop page - Contacts: Jan Polcher (LMD), Pere Quintana-Segui (O. Ebre)

New HyMeX Science Team dedicated to Mediterranean cyclones
Posted 24.03.2016
The Mediterranean is one of the most cyclogenetic regions on Earth. Intense cyclones are especially frequent in winter and autumn, constituting one of the most pronounced environmental risks associated with heavy rainfall, strong winds, property damages and fatalities. In rare cases, it is characteristic that the most intense cyclones might develop to systems of comparable intensity to tropical hurricanes. Due to the complex geography of the Mediterranean basin and due to its unique location between the semi-arid region of North Africa and the storm tracks of the mid-latitudes, there is a large variety of multi-scale processes which are involved in the intensification of Mediterranean cyclones. Large scale systems, such as troughs and wave breaking, and meso-scale processes such as deep convection, air-sea interactions and orographic disturbances are shown to be implicated to cyclones formation and development. Understanding these processes, their interactions and consequent heavy rainfall is a real scientific challenge and still an open question.
It is the objective of the science team to analyse the role of synoptic and meso-scale atmospheric processes in controlling the life cycle of Mediterranean cyclones. Special attention will be given to delineate the relative contribution of multi-scale atmospheric processes in intensifying the cyclones and causing heavy rainfall and weather extremes. Therefore, the science team aims at contributing to a better knowledge of cyclones, leading the way to a significant increase in the effectiveness of forecasting weather extremes, to a better planning of future mitigation strategies, and finally to the better understanding of cyclones' impact on regional climate and related environmental risks.
Contacts: Emmanouil Flaounas (NOA), Silvio Davolio (CNR-ISAC)

SAETTA lightning detection network
Updated 24.03.2016
The SAETTA lightning detection network http://www.obs-mip.fr/corsica/Observations/SAETTA is in its second year of operation within the CORSiCA Observatory. Several technical interventions have been performed on the 12 SAETTA stations on site and in laboratory. A preliminary quality control of the SAETTA data confirms the rather good behaviour of the SAETTA stations and the high quality of the lightning reconstructions. Several analysis at flash and storm scales are underway. The 2015 year was characterized by a larger number of storms occuring over the Corsican relief compared to the year 2014, with a series of 4-day lightning activity episods, including the one with casualties that occurred on June 10, 2015 (Figure 1). The high spatio-temporal observations of the SAETTA network not only pinpoint the location of the different stages of the convective clouds (Figure 2: storms on July 30, 2015), but also provide a unique insight on the dynamics and microphysics of the parent clouds (Figure 3: storm on July 25, 2014).
The operation of the SAETTA network and the analysis of the SAETTA data are supported by the Collectivité Territoriale de Corse through a CPER-FEDER fund, MISTRALS through the HyMeX programme, and by the Laboratoire d'Aerologie. - Contacts: Eric Defer, Sylvain Coquillat, Dominique Lambert (Laboratoire d'Aerologie)

Figure 1: storm on June 10, 2015

Figure 2: storm on July 30, 2015

Figure 3: storm on July 25, 2014

Joint HyMeX-Baltic Earth Workshop - 5-6 November 2015, Rome, Italy
Posted 19.10.2015
The first joint HyMeX-Baltic Earth workshop on regional climate system modelling for the European sea regions will take place at ENEA next 5-6 November. The workshop aims to contribute to the understanding of regional energy, momentum, water, and matter fluxes and their effects on the regional climate using observations and Regional Climate System Models (RCSMs) encompassing processes in the atmosphere, land, sea, and anthroposphere. The workshop will be focussed on European seas and their catchment areas like the Mediterranean Sea, Black Sea, North Sea, Baltic Sea and Arctic Ocean. See http://www.baltic-earth.eu/rome2015 - Contact: Gianmaria Sannino (ENEA)

MISTRALS International Conference - 20-22 October 2015, Marseilles, France
Updated 19.10.2015
The mid-term conference of the meta-programme MISTRALS (Mediterranean Integrated Studies at Regional and Local Scales) is a significant moment for the actions already implemented, like HyMeX and sister programmes, and their future orientations.
More on the conference website: MISTRALS International Conference 2015

9th HyMeX Workshop - 21-25 September 2015, Mykonos Island, Greece
Updated 19.10.2015
The 9th HyMeX Workshop took place from 21 to 25 September 2015, in Mykonos Island, Greece, hosted by the National Observatory of Athens. Besides the presentations of the latest scientific results through communications and posters, the programme included a 5-year review and many discussions on the work plan for the next 5 years.
The workshop programme with the presentations and posters are available under the workshop section. - Contacts: Vassiliki Kotroni, Kostas Lagouvardos (NOA)

Atmospheric electricity SOP1 overview paper published in AMT
Updated 10.02.2015
The overview paper of the PEACH project, the atmospheric electricity component of HyMeX, has been published in AMT. During HyMeX SOP1 from 5 September to 6 November 2012, PEACH has deployed and operated a series of instruments, in conjunction with four European operational lightning locating systems (ATDnet, EUCLID, LINET, ZEUS), to observe the lightning activity over the north-western Mediterranean at flash, storm and regional scales, building a comprehensive data set to understand and characterize continental and maritime thunderstorms in the area. See "An overview of the lightning and atmospheric electricity observations collected in southern France during the HYdrological cycle in Mediterranean EXperiment (HyMeX), Special Observation Period 1" by Defer et al. in the HyMeX publications. - Contact: Eric Defer (LERMA, Observatoire de Paris & CNRS)

Third fall hydrological field campaign successfully completed as part of HyMeX EOP
Posted 06.01.2015
From September 1, to December 15, 2014, a third fall hydrological field campaign has been performed. Instrumentation deployed on the Gard and Ardeche watersheds complemented with on-alert measurements (sampling of flood events for geochemistry analysis, gauging of flooding rivers, soil moisture measurements, field observations of runoff) guided from a permanent monitoring of the hydrometeorological situations (see sop.hymex.org) have allowed to extensively document some of the many events affecting the north-western Mediterranean watersheds over the period, especially the events of 14-20.09, 09-13.10, 03-04.11, 14-15.11, and 27-29.11.2014. Hydrological post-event surveys have been conducted showing exceeded historical reference floods in some areas. Social surveys will also be carried out to document crisis behavioral responses during flood events. - Contact: Isabelle Braud (IRSTEA)

Hydrological EOP overview paper published in HESS
Updated 24.10.2014
The article depicting the observation and modelling stategy implemented over the French watersheds for the monitoring, understanding and modelling of flash-floods has been published in Hydrology and Earth System Sciences. See "Multi-scale hydrometeorological observation and modelling for flash-flood understanding" by Braud et al. in HyMeX publications. - Contact: Isabelle Braud (IRSTEA)

8th International HyMeX Workshop - 15-18 September 2014, Valletta, Malta
Updated 24.10.2014
The 8th HyMeX workshop was successfully held from 15 to 18 September 2014 at the University of Malta, Valletta Campus, Malta. More information about the workshop, including the posters and presentations in pdf, are available in the workshops section.

MedCORDEX simulations available to the HyMeX database users
Posted 28.08.2014
The HyMeX Task Force working in regional climate modelling, also known as the MedCORDEX initiative, is pleased to announce the release of the simulation database hosted at ENEA for all the HyMeX users. The database includes evaluation runs for which the Regional Climate Models (RCMs) are driven by the ECMWF ERA-Interim reanalysis (1979-2013) as well as historical and scenario runs downscaling CMIP5 GCMs (1950-2100) and following the RCP4.5 and RCP8.5 scenarios. Anyone registered on the MISTRALS/HyMeX database can fully access the MedCORDEX database. At the moment the database is made of nearly 100,000 netcdf data files which occupy 2 Tb of data. The use of this data is strongly encouraged. http://www.medcordex.eu - Contacts: Emanuele Lombardi (ENEA), Paolo Ruti (ENEA), Samuel Somot (CNRM)

HyMeX BAMS papers published
Posted 28.08.2014
The two overview papers on HyMeX and HyMeX SOP1 have been published in the July issue of the Bulletin of the American Meteorological Society. For details, see HyMeX publications.

3rd International MedCORDEX workshop, 26-28 May 2014, Ecole Polytechnique, Palaiseau, France
Posted 18.04.2014
The 3rd international workshop dedicated to the MedCORDEX initiative will be held in Palaiseau, near Paris, on 26-28 May 2014. It is the opportunity for the international MedCORDEX community to be gathered to present and discuss key scientific results focussing on the modelling of the Mediterranean regional climate, present and future, and to discuss the future priorities for the phase II of MedCORDEX. During these 3 days, six scientific sessions will be proposed to present a wide range of scientific issues. They will be completed by small-group round tables to discuss specific points and by plenary discussions. Valorization, fundings opportunities, future priority research will then be addressed. See this page for the agenda and more information.

HyMeX articles in BAMS
Updated 26.11.2013
Two overview papers on HyMeX have recently been submitted to the BAMS journal: the first one by Drobinski et al. describes the overall HyMeX programme, the second one by Ducrocq et al. gives a presentation of SOP1. The preliminary version of the article on SOP1 is already on line at: http://dx.doi.org/10.1175/BAMS-D-12-00244.1. The final published version will be accessible under the same doi (10.1175/BAMS-D-12-00244.1). The revised version of the overview article is available (restricted access) through the following link: BAMS HyMeX.

HyMeX 7th International workshop - 7-10 October 2013, Cassis, France
Updated 31.05.2013
HyMeX International Scientific Steering Committee is pleased to announce that the programme's 7th workshop will take place from 7 to 10 October 2013 in Cassis, France, at the congress center Oustau Calendal. A total of 145 contributions have been received for oral and poster presentations from which the workshop programme is currently being drafted. All information about the workshop is available under the Workshops section. Looking forward to meeting you in Cassis. See also the workshop second circular.

HyMeX SOPs' debriefing workshop - 15-17 April 2013, Toulouse, France
Updated 31.05.2013
Following HyMeX Special Observation Periods 1 (Sept.-Nov. 2012) and 2 (Feb.-March 2013), a 3-day debriefing workshop was held in Toulouse, 15-17 April 2013. The workshop gathered 130 participants at the International Conference Centre of Météo-France to get an overview of the field operations, review the situations documented during the IOPs, the datasets available, and opportunities of further collaborative studies within the working groups. More informations here.

HyMeX Second Special Observation Period to start in the north-western Mediterranean
Posted 30.01.2013
HyMeX Second Special Observation Period - SOP2, scheduled from February 1, to March 15, 2013 is dedicated to strong wind events and their impact on the ocean mixed layer, dense water formation and ocean convection. Deployments will focus on the area of the Gulf of Lions under the influence of Mistral and Tramontane. Research vessel Tethys II and buoy tender Le Provence are already at sea to deploy Argo floats, drifters and buoys. Research vessel Le Suroît will set sail on Saturday from Toulon within the framework of the MerMex-DeWEX Dense Water formation EXperiment -also part of the metaprogramme MISTRALS- to perform CTD casts in the basin from February 2 to 22. The operations will also involve gliders, SAFIRE ATR-42, boundary layer balloons, radiosoundings and the wind profiler network set for SOP1. HyMeX SOP2 is funded by CNRS, Meteo-France, ANR and CNES. Picture: Visualisation of means at sea incl. 4 of the glider lines, routes of the ships Tethys II and Le Provence, together with AROME-WMed forecasted 10m winds.

SOP1: Second month of field campaign
Posted 31.10.2012
During the second month of the HyMeX field campaign, five Intensive Observation Periods dedicated to heavy precipitation events have been performed: IOP12 (11-12 Oct.) over Central Italy, the Balearic Islands, Valencia and Catalonia, IOP13 (15-16 Oct.) over Ligury-Toscany, Central Italy and north-east Italy, IOP15 over Catalonia, Valencia, the Balearic Islands and Cévennes-Vivarais, IOP16 (25-29 Oct.) over Catalonia, Cévennes-Vivarais, Ligury-Toscany and Central Italy, IOP18 (30 Oct.-1 Nov.) over Corsica, the Balearic Islands, Central Italy , north-east Italy, Cévennes-Vivarais. IOP14 (17-19 Oct.) was dedidated to orographic precipitation over Cévennes-Vivarais and IOP9 (2 Oct.) and IOP 17 (29 Oct.) have been dedicated to the calibration and validation of water vapour and aerosol lidars.

SOP1: One month of field campaign
Posted 03.10.2012
Within this first month of the HyMeX field campaign, four Intensive Observation Periods dedicated to heavy precipitation events have been performed: IOP2 (12 Sept.) over north-east Italy, IOP6 (23-24 Sept.) over south-eastern France and north Italy, IOP7 (26 Sept.) over sout-eastern France, and IOP8 (28-29 Sept.) over Spain and southern France. In addition, several IOPs have been carried out for the calibration and validation of water vapour and aerosol lidars and microphysical retrievials of radars installed over the Cévennes-Vivarais site. The picture shows the instruments -swell recorder, CTD sampler, radiosounding bench- on board the buoy tender « Provence » ready for its first IOP, IOP7a, on 25 Sept. 2012, early in the morning.

Posted 14.09.2012
The second intensive observation period (IOP2) of HyMeX SOP1 has occurred on Wednesday 12 September 2012. The scientific objectives of this IOP was the documentation of heavy precipitation and floods over nort-eastern Italy and orographic precipitation over the Ligury-Tuscany region. Moisture was brought by south-easterly flow over the Adriatic Sea and south-westerly flow over the Tyrrhenian Sea. In the Friuli Venezia region, 24-h cumulated precipitation exceeded 100 mm, and even reached 160mm in Sella Chianzutan. During this IOP2, the French ATR-42 with the water vapor lidar LEANDRE-2 on board, made a large square track from Bastia over the Tyrrhenian Sea, Alpine foothills and Adriatic Sea documenting the moist inflows. The French and Italian precipitation radars provided quicklooks for the near-real time guidance of the ATR-42. The German Do128 performed two flights in the morning and afternoon at different heights along the northern and eastern coasts of Corsica, to document fluxes over the Ligurian Sea. After the passage of the front, precipitation shifted East towards Slovenia and the Croatian coast. During the same day, thunderstorms with intense rain rates also affected the Central Italy region, the north of Catalonia and the Balearic Islands. A tornado also affected the sanctuary of Lluc in Mallorca in the late evening.

HyMeX first IOP
Posted 13.09.2012
The first intensive observation period (IOP) of HyMeX SOP1 has occurred on Tuesday 11 September 2012. The scientific objectives of this IOP was the documentation of orographic precipitation over the Cevennes. Indeed, in Southern France, scattered deep convection developed early in the afternoon over the Southern slope of the Massif Central, at the convergence between a light south-easterly flow from the Mediterranean and a light westerly
flow from the Atlantic associated with a cold front. The two French aircrafts flew on that day. The ATR-42 with water vapor lidar LEANDRE-2 on board made hexagonal track around the developing convective clusters to document humidity feeding and environmental microphysics. The Flacon-20 with cloud radar RASTA and microphysics sensors on board flew in the cloudy regions of the storms. A boundary layer quasi-Lagrangian balloon launched the previous day from Menorca, drifted slowly in the southerly marine flow towards the coast. The flight was stopped before reaching land. Radiosoundings and ground lidar measurements took also place in the Candillargues supersite. A second IOP took place on Wednesday 12 September 2012 to document a heavy precipitation event that occurred in the North-Eastern Italy and the orographic precipitation that occurred in the Ligury-Tuscany region. More details will follow here and on the SOP webpage...

HyMeX special observation period (SOP) started
Posted 05.09.2012
The HyMeX special observation period (SOP) dedicated to heavy precipitation and flash flooding has just begun. Involved teams had not very relaxing summer vacation, with instrumentation to deploy, last minute problems to solve, chain of decision to test. But at the end, all was ready (or nearly). The first briefing was held on September 4th with a successful communication test between the primary operation centre in La Grande Motte near Montpellier (France) and the remote centres in Palma de Mallorca (Spain), L'Aquila (Italy) and San Giuliano (Corsica). On this first day of HyMeX SOP, heavy rain occurred in Minorca, in eastern Corsica and eastern Central Italy producing damages locally. The forecaster on duty provided a very clear overview of the upcoming weather situation. He used satellite imagery and a number of quicklooks from forecast model runs by operational weather services but also research institutes involved in HyMeX (see HyMeX SOP web server at http://sop.hymex.org). Finally he did not announce severe weather before a week. Updated news will be posted regularly.

HyMeX-TTM3 MedCORDEX workshop, 28-30 March 2012, Toulouse, France
Posted 22.02.2012
The Regional Climate Modelling task in HyMeX, TTM3, and the MedCORDEX initiative try to define a common framework for high-resolution and multi-component Regional Climate Models dedicated to the study of the Mediterranean. The workshop to be held from 28 to 30 March in Météo-France, Toulouse, will aim to: i) review the TTM3 and MedCORDEX modelling platforms and runs, ii) design the multi-model intercomparison, iii) discuss the modelling exercise for the HyMeX observing period, iv) discuss the first results from the model runs, v) organise multi-model evaluation, and vi) enhance model improvement within TTM3. All the modelling, analysing and evaluating teams involved in HyMeX and MedCORDEX are welcome. See this page for the agenda and more information. - Contacts: Miguel Gaertner (UCLM, Spain), Gianmaria Sannino (ENEA, Italy), Samuel Somot (CNRM, France)

Post-flood survey in the Magra River, Italy, 13-17 February 2012
Updated 22.02.2012
A post-flood survey was held in the watershed of the Magra River (north-west Italy) which was hit by a flash-flood on 25 October 2011. Field observations have been carried out by CNR IRPI and Dept. TESAF of the University of Padova. Researchers of other Italian Universities have also participated focusing on topics such as flood routing in the main channel, channel bed morphology, and transport of wood by the flood. The survey has made it possible to estimate peak discharges at around 20 cross-sections. Interviews to witnesses provide interesting confirmations about the flashy behaviour of the flood.
Contact: Lorenzo Marchi (CNR IRPI & TTO2d leader)

Events recorded in the HyMeX database
Posted 26.01.2012
The HyMeX database http://www.hymex.org/database offers a direct access to a list of HPEs of interest for HyMeX, including the series of events that occurred from September to November 2011. Cross work on these case studies is encouraged in preparation of the upcoming 6th HyMeX workshop of May 2012 and of the first SOP in the NWMed in Fall 2012.

8th HyMeX ISSC Meeting, Casablanca, Morocco, 24 January 2012
Posted 23.01.2012
The 8th HyMeX International Scientific Steering Committee will take place on January 24, 2012 in Casablanca, Morocco. This 8th ISSC meeting is hosted by the National Meteorological Service - Direction de la Météorologie Nationale - of Morocco. DMN is one of the partners of HyMeX and is particularly interested in GPS data validation and assimilation, the study of cyclogenesis in the Mediterranean as well as of the hydrological cycle over targeted watersheds (Moulouya, Loukos). Contacts: Philippe Drobinski (ISSC Co-Chair), Noureddine Filali Boubrahmi (Head of CNRM, DMN, Morocco)

HyMeX.es, the portal for HyMeX activities in Spain
Posted 23.01.2012
The Spanish partners of HyMeX share a common portal HyMeX.es where you can find information about the groups involved in HyMeX, the acctivities carried out, as well as job oppportunities. - Contacts: Jordi Vallespir (webmaster), Victor Homar (UIB)

6th HyMeX Workshop - 1st circular
Posted 18.11.2011
The 6th HyMeX Workshop will take place for 4 days from 7 to 10 May 2012 in Primosten, Croatia, hosted by the Meteorological and Hydrological Service of Croatia, the Institute of Oceanography and Fisheries, and the Andrija Mohorovicic Geophysical Institute of the University of Zagreb. You are invited to consider and disseminate the first circular for the workshop available on the page Workshops - Contacts: Branka Ivancan-Picek (DHMZ), Branka Grbec (IOF)

The IODA-MED and FloodScale projects have been accepted for funding by the French National Research Agency (ANR)
Posted 18.11.2011
The central objective of IODA-MED -Innovative Observing and Data Assimilation systems for severe weather events in the MEDiterranean- is to improve HPE predictability by reducing the uncertainties on the initial state of the model. This will be achieved i) by collecting additional and non-conventional observations in the marine upwind environment of the HPEs, ii) by making better use of routinely available observations in the mesoscale data assimilation systems, iii) by exploring the potential of assimilating new observation types especially observations related to the water cycle, and iv) by advancing the quality of the mesoscale data assimilation systems. IODA-MED is a major contribution to the first HyMeX special observing period scheduled for autumn 2012 and focussed on heavy precipitation and floods. - Contact: Evelyne Richard (LA)
FloodScale has the general objective to improve the understanding and simulation of the hydrological processes leading to flash floods by addressing two fundamental questions in hydrology: the change of scale problem and the prediction in ungauged basins. The project proposes a combined multi-scale observation and modelling effort, relying on nested-catchments instrumentation covering the following scales: (i) the hillslope scale, where process understanding on runoff generation and concentration can be tackled; (ii) the small to medium catchment scale (1-100 km²) where the impact of network structure, rainfall, landscape, initial soil moisture variability can be quantified; (iii) the larger scale (100-1000 km²) where transfer phenomena in rivers and flooding become important. FloodScale focuses on the Gard and Ardèche catchments of the Cévennes-Vivarais Hydrometeorological Observatory (OHMCV) and will enable observation enhancement for the HyMeX observing periods. - Contact: Isabelle Braud (IRSTEA, formerly CEMAGREF)

Instrumentation and networks for lightning detection - News from TTO1h
Posted 16.11.2011
A first site survey has been conducted in the SOP1.1 area in preparation for the deployment of the New Mexico Tech (NMT) Ligthning Mapping Array (LMA) (see picture, VHF noise survey at the Pujaut airfield). A second survey is scheduled for the week of 21-25 November 2011. A new station of the LINET network will soon be installed in Corte, Corsica. Real-time display of lightning over Europe by the long-range ZEUS lightning detection system operated by National Observatory of Athens is available at the following address http://www.noa.gr/forecast/lightning.gif. The installation of electric field mills on research aircraft is currently under study. - Contacts: Eric Defer (LERMA), Sylvain Coquillat (LA), Kostas Lagouvardos (NOA)

HyMeX on the front page of GEWEX web site
Posted 24.10.2011
HyMeX is the newest of WCRP GEWEX Regional Hydroclimate Projects. The first results of HyMeX are the subject of an article of the GEWEX News issue of August 2011 advertised on the home page of GEWEX. See: http://www.gewex.org.

HyMeX at WCRP OSC, 24-28 October 2011, Denver
Posted 24.10.2011
A cluster of 17 posters about HyMeX objectives and first results are presented at the WCRP Open Session Conference this autumn. These posters are presented under session C4 “Meeting the Needs for Integrated Climate Science, Information and Capacity Building with Regard to Climate Variability and Change in Europe”. Conveners: V. Pope, C. Goodess, M. Beniston, P. Lionello. See: http://www.wcrp-climate.org/conference2011/Posters_C4.html. - Contact: Philippe Drobinski (LMD)

New observations on the "Cote d'Azur" buoy
Posted 02.08.2011
The Meteo-France buoy "Cote d'Azur" moored at 43.4°N - 7.8°E was replaced by a new buoy on June 28, including new sensors. Two rain gauges are now operating. In addition to the standard surface operational parameters, the following parameters are measured and real-time transmitted via Iridium: surface salinity, global and IR radiation, precipitations. The mooring line is now equipped with 19 temperature sensors SP2T (NKE) respectively at -6m, -10, -15, -20, -25, -30, -35, -40, -50, -60, -70, -80, -90, -100, -130, -160, -185, -210 and -260m. Data are visible in real-time at: http://www.meteo.shom.fr/real-time/html/dyfamed.html and will be stored in the HyMeX database. - Contacts: Marie-Noëlle Bouin (Meteo-France) and Laurent Coppola (Observatoire Oceanologique de Villefranche)

Marseilles-Algiers line to be instrumented for HyMeX
Posted 02.08.2011
The route from Marseilles to Algiers has been given first priority for the LOP. The ship of opportunity is expected to be the Ro-Ro "Niolon" of the Marfret company. The "Niolon" crosses from Marseilles to Algiers once per week, and calls in other Algerian ports before heading back to Marseilles. The "Niolon" will be equipped with: 1) a Sea Embedded Observing System (SEOS) to measure short and long wave downward radiative fluxes, wind, temperature, humidity, precipitations, and infrared SST, 2) a GPS receiver to derive integrated water vapour, and 3) a thermosalinometer to measure SST and SSS. To date installation is scheduled for late September 2011. The second priority is set on Barcelona-Rome, with installation scheduled for 2012. Instrumentation of ships of opportunity within HyMeX is managed by TS6b. Contacts: Vanessa Cardin (OGS) and Isabelle Taupier-Letage (MIO, formerly LOPB).

MCS tracking tool available on the HyMeX website
Posted 27.07.2011
A mesoscale convective system tracking tool over the HyMeX domain based on the Eumetsat SAFNWC RDT product is now available on the HyMeX website under the Resources section. Based on MSG SEVIRI images, it allows: 1) identification, tracking and monitoring of intense convective systems, 2) detection of rapidly developing convective cells. Ligthning data from the ZEUS network over the all domain help to discriminate convective systems. The MCS tacking tool is available at: http://www.hymex.org/RDT/ Contact: Laurent Labatut (Météo-France).

HyMeX at the 13th Plinius Conference, 7-9 September 2011, Savona
Posted 27.07.2011
A HyMeX side-meeting will be organised at the 13th Plinius Conference on Mediterranean storms to be held on 7-9 September 2011 in Savona, Italy. The HyMeX side-meeting will take place on 8 September. Contacts: Silvio Davolio (ISAC-CNR), Véronique Ducrocq (CNRM). More on the HyMeX side-meeting and the agenda. More on the 13th Plinius Conference programme.

The new HyMeX website is released
Posted 04.07.2011
Welcome on the new HyMeX website! This revised version now contains a News section on the home page, an updated presentation of the programme, new entries for data and publications, and a unified and individual access to the task teams' and working groups' private workspaces. Hope you will enjoy it! For questions or feedback: hymex-web@cnrm.meteo.fr.

6th HyMeX Workshop 7-11 May 2012, Croatia
Posted 17.06 2011
In 2012, the 6th HyMeX workshop will be hosted by our Croatian colleagues. The workshop will be held from 7 to 11 May 2012 in the city of Primosten, Croatia.

ISSC Meeting
Posted 17.06 2011
The 7th meeting of HyMeX International Scientific Steering Committee took place on 19 and 20 May 2011 in Menorca. The ISSC discussed the programme implementation, reviewed the HyMeX-related projects and proposals as well as forthcoming funding and networking opportunities at the international level.HyMeX ISSC composition: see International coordination.

The 5th HyMeX workshop took place in Punta Prima, Menorca, Spain, 17-19 May 2011
Posted 25.05.2011
The 5th HyMeX workshop took place in Punta Prima, Menorca, Spain from 17 to 19 May 2011, hosted by AEMET and the University of the Balearic Islands. This edition gathered 154 participants for 48 oral and 82 poster presentations. The day before the workshop as well as a series of working sessions were specifically dedicated to the implementation of the observation systems in preparation of the EOP-SOPs of 2012-2013, and the coordination of modelling activities. Among others, the results from the first LOP case studies were presented, as well as climate regional downscaling studies over the ERA-period. Workshop program, abstracts, presentations and posters are now online. You can upload you poster here.