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COST Domain Committee "ESSEM"
COST Action "ESSEM" ES0604
Start Date 05/10/2007
Atmospheric Water Vapour in the Climate System (WaVaCS)
MONITORING
PROGRESS REPORT
Reporting Period: from 05/10/2007 to 01/06/2011
This Report is presented to the relevant Domain Committee. It contains three parts:
I. Management Report prepared by the COST Office/Grant Holder II. Scientific Report prepared by the Chair of the Management Committee of the Action III. Previous versions of the Scientific Report; i.e., part II of past reporting periods The report is a “cumulative” report, i.e. it is updated annually and covers the entire period of the Action. Confidentiality: the documents will be made available to the public via the COST Action web page except for chapter II.D. Self evaluation. Based on the monitoring results, the COST Office will decide on the following year’s budget allocation.
Executive summary (max.250 words):
The proposed Action brings together leading European scientists to address the issue of atmospheric water vapour and its impact on climate. This Action is needed to integrate research carried out in different areas, including: atmospheric monitoring, data analysis and modelling. It brings together expertise that is both unique and timely.
In order to make significant progress in the field of water vapour and climate, it is necessary to integrate knowledge acquired from research based on different methodologies. To achieve this, the Action is structured into 4 working groups which together aim to increase knowledge on observations, theory, and data assimilation in the context of water vapour and climate.
The objective is to offer to the scientific community and the broader Earth Observation community an integrative approach to understanding the processes controlling the atmospheric water vapour distribution, in particular those elements linking water vapour and climate. Beneficiaries of this Action include the meteorological services, space agencies, environmental agencies and policy makers. The specific task of this Action is to promote knowledge dissemination activities at various levels through scientific missions, thematic training schools, support toward conference participation, and special issues in world-class scientific journals.
I. Management Report prepared by the COST Office/Grant Holder I.A. COST Action Fact Sheet • COST Action ES0604-Atmospheric Water Vapour in the Climate System (WaVaCS) • Domain Earth System Science and Environmental Management “ESSEM” • Action details:
MoU: 332/06 Start of Action: 05/10/2007
CSO approval date: 20/11/2006 Entry into force: 25/04/2007
End of Action: 04/10/2011
• Objectives (from DB as in About COST) The proposed Action brings together leading European scientists to address the issue of atmospheric water vapour and its impact on climate. This Action is needed to integrate research carried out in different areas, including: atmospheric monitoring, data analysis and modelling. It brings together expertise that is both unique and timely. In order to make significant progress in the field of water vapour and climate, it is necessary to integrate knowledge acquired from research based on different methodologies. To achieve this, the Action is structured into 4 working groups which together aim to increase knowledge on observations, theory, and data assimilation in the context of water vapour and climate. The objective is to offer to the scientific community and the broader Earth Observation community an integrative approach to understanding the processes controlling the atmospheric water vapour distribution, in particular those elements linking water vapour and climate. Beneficiaries of this Action include the meteorological services, space agencies, environmental agencies and policy makers. The specific task of this Action is to promote knowledge dissemination activities at various levels through scientific missions, thematic training schools, support toward conference participation, and special issues in world-class scientific journals. • Parties: list of countries and date of acceptance Parties Country Date Country Date Country Date Country Date
Belgium 18/04/2007 Bulgaria 04/10/2007 Czech
Republic 04/10/2007 Denmark 18/04/2007
Finland 20/06/2007 France 26/04/2007 Germany 18/04/2007 Greece 20/06/2007
Hungary 15/12/2009 Ireland 15/12/2009 Italy 22/05/2007 Norway 18/04/2007
Poland 25/04/2007 Portugal 15/12/2009 Spain 25/05/2007 Sweden 26/04/2007
Switzerland 26/04/2007 United
Kingdom 12/06/2007
Total: 18 • Intentions to accept: list of countries and date Intentions to accept the MoU Country Date Country Date Country Date Country Date
Total: 0
Contacts MC Chair Science Officer: Administrative Officer:
Dr Federico FIERLI Tel. +39 649 934304
Carine PETIT
COST Office
+32 2 533 38 31
Chandrasa SJAMSUDIN
COST Office
+32 2 533 38 41
• Action Web site: http://www.isac.cnr.it/wavacs/ • Grant Holder Representative(name, e-mail) • Working Groups (list of WGs and names and affiliations of participants) WG1: IMPROVING WATER VAPOUR OBSERVATIONS
WG2: UNDERSTANDING PROCESSES
WG3: MERGING OBSERVATIONS AND MODELLING
WG4: DATA ASSIMILATION TECHNIQUES I.B. Management Committee member list
Management Commitee Chair Vice Chair DC Rapporteur
Dr. Federico FIERLI
National Research CouncilInstitute
of Atmospheric and Climate
Science Via Fosso del Cavaliere
00133 Rome Italy
Dr. Cornelius SCHILLER
Forschungzentrum Julich GmbH
ICG-1 52425 Julich Germany
Dr. Niels LARSEN
Danish Meteorological
InstituteProgram for Atmospheric
ProcessesResearch and
Development Lyngbyvej 100 2100
Copenhagen Denmark
Belgium
Quentin ERRERA MC Member
Institut dAronome Spatiale de Belgique 3 av. circulaire 1180
Brussels Belgium
Dr Roeland VAN MALDEREN MC Member
Royal Meteorological Institute of Belgium Ringlaan 3 1180
Brussels Belgium
Bulgaria Dr. Valery SPIRIDONOV
MC Member
Bulgaria
Professor Staytcho KOLEV
MC Member
National Institute of Meteorology and Hydrology Blvd.
Tzarigradsko Chaussee 66 1784 Sofia Bulgaria
Czech Republic Professor Zdenek ZELINGER
MC Member
Academy of Sciences of the Czech RepublicJ. Heyrovsky Institute of Physical Chemistry
Dolejskova 3 18223 Prague Czech Republic
Denmark Dr. Johannes K. NIELSEN
MC Member
Danish Meteorological Institute Atmospheric Processes
Lyngbyvej 100 2100 Copenhagen Denmark
Dr. Tina CHRISTENSEN
MC Member
Danish Meteorological Institute Programme for
Atmospheric Processes Lyngbyvej 100 2100 Copenhagen
Denmark
Finland Mr. Leif BACKMAN
MC Member
Finnish Meteorological Institute
Middle Atmosphere Research Research and Development
Erik Palmenin Aukio 1, P.O. Box 503 101 Helsinki Finland
Professor Esko KYRO
MC Member
Arctic Research Centre Finnish Meteorological Institute
Tahtelantie 62 99600 Sodankyla Finland
France Dr. Remy ROCA
MC Member
Laboratoire de Meteorologie DynamiqueCNRS Universite
Pierre et Marie Curie, Tour 45-55 3eme etage Boite 99,
4 Place jussieu 75005 Paris France
Dr. Bernard LEGRAS
MC Member
CNRSEcole Normale Superieure 24 rue Lhomond 75005
PARIS France
Germany Dr. Cornelius SCHILLER
MC Member
Forschungzentrum Julich GmbH
ICG-1 52425 Julich Germany
Dr. Engelbart withdrew its position as MC
member
Professor Ulrich SCHUMANN
MC Member
Deutsches Zentrum fur Luft- und
Raumfahrt (DLR) Institut fur Physik
der Atmosphare Oberpfaffenhofen,
Postfach 1116, Munchner Str. 20
82234 Wesling Germany
Greece Dr. Evangelos AKYLAS
MC Member
Greece
Hungary Dr. Gyorgyi BARANKA
MC Member
Hungarian Meteorological Service Kitaibel Pal str. 1 1024 Budapest Hungary
Ireland Dr. Priscilla MOONEY
MC Member
Italy Dr. Elisa MANZINI
MC Member
Italy
Norway Dr. Yvan J. ORSOLINI
MC Member
Norway
Dr. Andreas STOHL
MC Member
Norsk Institutt for Luftforskning
Instituttveien 18 2027 Kjeller Norway
Dr. Harald SODEMANN
MC Substitute
Norwegian Institute for Air Research
P.O. Box 100 2027 Kjeller Norway
Poland
Dr. Adam JACZEWSKI MC Member
Institute of Meteorology and Water Management Atmospheric research Zegrzynska 38 05-119 Legionowo Poland
Portugal Professor Jose Manuel CASTANHEIRA
MC Member
CESAM (Centre for Environmental and Marine
Studies)University of Aveiro Campus de Santiago 3810 -
193 Aveiro Portugal
Professor Margarida L. R. LIBERATO
MC Member
Universidade de Trs-os-Montes e Alto Douro Dept. Fsica,
Quinta de Prados, Apt. 1013 5001-801 Vila Real Portugal
Spain Dr. Pedro RIBERA RODRIGUEZ
MC Member
Fisica de la TierraCiencias ExperimentalesUniversidad
Pablo de Olavide Carretera de Utrera, Km 1 41013
Seville Spain
Dr. Luis GIMENO
MC Member
CLIMATE DIAGNOSIS GROUPSCIENCESUNIVERSITY OF
VIGO CAMPUS DE AS LAGOAS S-N 32004 Ourense Spain
Sweden Dr. Ulrika WILLEN
MC Member
Sweden
Professor Stefan BUEHLER
MC Member
Lulea Technical University Box 812 98128 Kiruna Sweden
Switzerland
Professor Niklaus KAEMPFER MC Member
Institute of Applied PhysicsUniversity of Bern Sidlerstr. 5 3012 Bern Switzerland
United Kingdom Professor Geraint VAUGHAN
MC Member
University of Manchester SEAES,
Simon Building, Oxford Road M13
9PL Manchester United Kingdom
c.uk
Dr. Brian KERRIDGE
MC Substitute
Rutherford Appleton Laboratory
Chilton, Didcot Oxon. United
Kingdom
Ms. Judith AGNEW
MC Substitute
Science and Technology Facilities
CouncilRadio Communications Research
Unit Rutherford Appleton Laboratory,
Harwell Science and Innovation Campus
OX11 0QX Didcot United Kingdom
I.C. Overview activities and expenditure
II. Scientific Report II.A. Results achieved during the period 1 June 2010 to 31 May 2011 WG 1 workshop on the LAPBIAT Atmospheric Sounding campaign at the Finnish Meteorological Institute in Helsinki, September 2-3, 2010. In January-June 2010 the LAPBIAT atmospheric sounding campaign took place in Sodankylä, northern Finland (67.4° N, 26.6° E) to perform profile and column measurements of water vapor and aerosols in the troposphere and stratosphere by various in situ and remote sensing instruments. The campaign involved balloon borne research grade water vapor instruments such as the Cryogenic Frost point Hygrometer (CFH) and the Lyman- alpha fluorescence hygrometer FLASH- B. The climate research radiosonde Vaisala RR01, which is currently under development, was flown in the same payload with the cryogenic frost point hygrometer and the fluorescence hygrometer. The remote sensing instruments participating in the campaign included the microwave radiometer for water vapor measurements MIAWARA-C. This instrument was operated for a six month period, until mid-June 2010. The aerosol in situ profile measurements were made by the new COBALD instrument and by a well established balloon borne aerosol backscatter sonde. The particle measurements in the stratosphere were made simultaneously with the water vapor measurements. The purpose of the workshop in FMI Helsinki during 2-3 September 2010 was to discuss different measurement techniques, campaign results and future cooperation. Discussion topics included LAPBIAT interaction with other projects, campaigns (EU/RECONCILE). From several sides it was expressed that LAPBIAT is a unique campaign, combining instrument development and geophysical research. It has been very fruitful and collaboration should continue along these lines. V Management Committee, Venice, February 9, 2011 The management committee was attended by 9 representatives and by Carine Petit, Scientific Officer and Niels Larsen, rapporteur. The minutes are available through the website. The MC discussed and prepared the plan for the last action period. Briefly, it is planned to have a Final workshop on ice clouds and water vapor trends in Paris, September 2011, a special issue on ACP (to be launched soon). STSMs have also been further advertised during the school. Finally it has been discussed a new proposal and the ICECLIM (Ice Clouds in the Climate system) COST action has been submitted at the end of March 2011. Winter School The winter school provided a detailed view of atmospheric water vapour and its role in the climate system. The course had a practical component focusing on observations models and methods. This one week course aimed primarely at PhD students, postdocs and other young scientists wishing to broaden and deepen their knowledge or to identify new research opportunities. The winter school is a follow-up of the Cargese International school. The course included lectures and practical sessions. Practical sessions included group activities on pedagogical exercises addressing open issues in current research. Poster sessions animated by the students and 2 Science Cafés were held to promote discussion among participants. We received 130 applications from all over the world and 46 students were selected for attendance to have efficient practical sessions. School was free of charge and WAVACS allowed to support 28 grants to cover shared lodge, meals and local transportation, to reimburse all lecturers and to support organizational expenses.
It was possible to host 9 students from US and one from Brasil. The school was extremely lively with highly interactive sessions. As syntesis of the anonymous pool done by participants, evaluation is almost positive: 95 % considered the training very or extremely good. Practicals were also evaluated almost positively. Interestingly, the school (jointly with previous Cargese) is considered by students as a regular event supported by COST. Lectures, tutorials, student posters and additional photo are available at: http://www.isac.cnr.it/wavacs/node/37
Group picture of the Winter School (Courtesy N. Schneider) WG1: The main activity of WG 1 for the reporting period was devoted to the objectives: - Evaluation of the accuracy of existing and emerging measurement techniques, - Cross-validation of observations from diverse instruments - Merge the observations from different platforms These objectives were addressed during a measurement campaign called LAPBIAT-2 at the research station of the Finnish weather service (FMI) at Sodankylä at the beginning of 2011. Water vapor was measured by different techniques, such as balloon soundings, microwave radiometry and GPS. Instruments determined the water vapor profile as well as the total column density of water vapor. During the measurement campaign a major sudden stratospheric warming occurred that was well observed by the different measurement technique. During a COST-WAVACS workshop in fall 2011 at the premises of FMI in Helsinki results from the campaign were discussed in detail (see above for details). Several papers on LAPBIAT are planned this year. Data from BASCOE, from WG4, will be used in future studies of this SSW event in the frame of the COST collaboration. Several papers addressed the issue of the bias and the retrieval of humidity and ice in the upper troposphere (John et al., 2011, Eliasson, 2011, Eriksson, 2010). One of such papers comes from the activity carried out in an STSMs. Finally, further work continued on the realization of a dedicated webpage for instruments
measuring water vapor from satellite (http://www.sat.ltu.se/docs/data/cost_h2o_satellites/) and an interactive overview table of instrument/techniques-intercomparisons (http://www.watervapor.org)
WG2: This WG was mainly involved in the organization of the winter school and in the debriefing of the water isotopologues workshop. This last activity was a key issue for the action since the research on observations and modelling of isotopes was one of the main objectives of the WG. Moreover, the WG member pursued their activity contributing to several publications and to the SPARC WAVAS activities. In particular, the analysis of the tropical campaign AMMA was concluded and several publications addresses the issue of the role of convection and long-range transport in determining the concentration of water vapor and mechanisms relevant for cirrus formation in the upper troposphere (Fierli et al., 2011, Law et al, 2010 Pommereau et al. 2011, Frey et al. 2011). Lagrangian analysis of moisture transport, addressed in the frame of the STSM of Duran Quesada have been published in three papers this year (Duran Quesada et al. 2011, Nieto et al. 2010, Gimeno et al., 2011). The STSM of Felix Ploger is resumed in a publication (Ploeger et al., 2011) addressing the capability of trajectory models in reproducing observed water vapor profiles in the tropical UTLS. WG3 / WG4: The main work in WG3 dealt with the analysis of the water vapor distribution and its interannual to decadal variability in the Upper Troposphere and Lower Stratosphere as represented in a set of long-term climate simulations performed with state of the art coupled climate models. The simulations have been performed within the CMIP5 (Coupled Model Intercomparison Project) and are performed with climate models including a well-resolved stratosphere. This analysis is a cornerstone of research topics within DynVAR WCRP SPARC activity (http://www.sparcdynvar.org), and is included in the COMBINE General Assembly (Exeter, May 2011) and to the WCRP Open Conference (Cagnazzo et al., 2011). Moreover, the The work carried out in the frame of WG4 at NILU and BIRA is described in Lahoz et al. (2010) and was presented at the WAVACS MC meeting (February 2011, Venice, Italy) and at a workshop in JPL (February 2011, Pasadena, USA). Two lectures were given at the WAVACS Winter School (Venice 2011), where results from WG4 were presented. The Met Office has recently introduced an improved approach to assimilate humidity data, building on work by Hólm (ECMWF). A non-linear humidity transform has been developed, and statistical relationships with temperature increments added. In trials, these changes have been shown to improve both forecast scores and the ability to fit satellite data. The new control variable is being considered for inclusion in the Met Office's operational NWP system later this year. While most improvements are seen in the lower troposphere, in principle the new assimilation approach should lead to improved humidity analyses in the upper troposphere / lower stratosphere (UTLS) region as well. Furthermore, analyses in that region may also be improved by other changes in the assimilation system related to the quality control and processing of radiosonde humidity observations. An assessment of UTLS humidity analyses, including a validation against Aura Microwave Limb Sounder data, is now underway. Planned collaborations for the last period are:
BIRA-IASB/NILU/JPL: Finalize Lahoz et al. (2010) paper in response to referee comments. WAVACS special issue: (i) joint paper BIRA-IASB/NILU with U. Bern (N. Kaempfer) to compare ground-based water vapour data with BASCOE analyses for northern winter 2010 and/or 2011; (ii) joint paper BIRA-IASB/NILU/JPL extending the work of Lahoz et al. (2010) to look at the final warming in the stratosphere for northern winter 2009 and/or 2010. This activity is carried out in connection with WG1. STSMs 5 STSMs took place during this year: Paulina Ordonez Perez, University Olavide ES to NILU, NO, April 2011 Emiliano Orlandi, U. Cologne, DE to ISAC-CNR IT, May 2011 Paolo Davini, CMCC, IT to U Reading UK, May 2011 John Viju, Met Office UK to U. Kiruna, SE, June 2010 Rolf Ruefenacht, U Bern, CH to BISA-BE, April 2011 An additional STM is under evaluation and may take place early June Riccardo Biondi, Danish Space Institute, DK to ISAC-CNR, IT Details and reports are available through the webpage: http://www.isac.cnr.it/wavacs/stsm Dissemination of results The website collects the relevant material and has been frequently updated during last months. The action activities are published regularly in peer-reviewed literature. Major impact on the scientific community is expected with the opening of the special issue on Atmos. Chem. Phys, a high impact international journal edited by Copernicus. During the MC, a better link to international agencies has been invoked. For this, in addition to the current linkage to MetOffice (UK), it is planned to invite representatives of EUMETSAT to the final event of the action. Web site The WAVACS website www.isac.cnr.it/wavacs has been rebuilt last year based on a CMS (Content Management System) and is constantly updated with the material relevant to the action. The material section contains new results from WG1 (databases, ISSI book). Posters, tutorial and talks from the winter school were uploaded in real-time thanks to the accessibility to the actions members, while all workshop and action reports are now publicly available. A publication section is in preparation. Scientific and Technical Cooperation The Cooperation and contacts carried out this year: EU projects: AMMA-EU (WG2), COMBINE (WG3) SPARC, WAVAS initiative (WG1-2), DynVAR initiative (WG3) GCOS: LUAMI campaign (WG1) Other: LAPBIAT campaign (WG1) Selected Publications
For a complete outlook of publications relevant to WG1 the reader can refer to the watervapor.org database developed in the frame of WAVACS action. Additional relevant publications from WAVACS members are listed below. WG1 Grabon, JS; Davis, KJ; Kiemle, C, et al., Airborne Lidar Observations of the Transition Zone Between the Convective Boundary Layer and Free Atmosphere During the International H2O Project (IHOP) in 2002, BOUNDARY-LAYER METEOROLOGY Volume: 134 Issue: 1 Pages: 61-83 Published: 2010 John, V. O., G. Holl, R. P. Allan, S. A. Buehler, D. E. Parker, and B. J. Soden (submitted 2010), Biases in satellite infra-red estimates of upper tropospheric humidity and its trends, J. Geophys. Res.. submitted, 2011 S. Eliasson, S. A. Buehler, M. Milz, P. Eriksson, and V. O. John, Assessing observed and modelled spatial distributions of ice water path using satellite data, Atmos. Chem. Phys., 11, 375-391, 2011 Eriksson, P., B. Rydberg, M. Johnston, D. P. Murtagh, H. Struthers, S. Ferrachat and U. Lohmann, Diurnal variations of humidity and ice water content in the tropical upper troposphere, Atmos. Chem. Phys., 10, 11519-11533, doi:10.5194/acp-10-11519-2010, 2010. Eriksson, P., M. Ekström, B. Rydberg, D. L. Wu, R. T. Austin and D. P. Murtagh Comparison between early Odin-SMR, Aura MLS and CloudSat retrievals of cloud ice mass in the upper tropical troposphere, Atmos. Chem. Phys., 8, 1937-1948, 2008. Ekström, M., P. Eriksson, W. G. Read, M. Milz and D. P. Murtagh, Comparison of satellite limb-sounding humidity climatologies of the uppermost tropical troposphere, Atmos. Chem. Phys., 8, 309-320, 2008. Ekström, M. and P. Eriksson, Altitude resolved ice-fraction in the uppermost tropical troposphere, Geophys. Res. Lett., 35, L13822, doi:10.1029/2008GL034305, 2008. WG2 W. Frey, S. Borrmann, D. Kunkel, R. Weigel, M. de Reus, H. Schlager, A. Roiger, C. Voigt, P. Hoor, J. Curtius, M. Krämer, C. Schiller, C. M. Volk, C. D. Homan, F. Fierli, G. Di Donfrancesco, A. Ulanovsky, F. Ravegnani, N. M. Sitnikov, S. Viciani, F. D'Amato, G. N. Shur, G. V. Belyaev, K. S. Law, and F. Cairo, In-situ measurements of tropical cloud properties in the West African monsoon: upper tropospheric ice clouds, mesoscale convective system outflow, and subvisual cirrus, Atmos. Chem. Phys. Discuss., 11, 745-812, 2011 M. Kübbeler, M. Hildebrandt, J. Meyer, C. Schiller, T. Hamburger, T. Jurkat, A. Minikin, A. Petzold, M. Rautenhaus, H. Schlager, U. Schumann, C. Voigt, P. Spichtinger, J.-F. Gayet, C. Gourbeyre, and M. Krämer, Thin and subvisible cirrus and contrails in a subsaturated environment, Atmos. Chem. Phys. Discuss., 10, 31153-31186, 2011 F. Ploeger, S. Fueglistaler, J.-U. Grooß, G. Günther, P. Konopka, Y.S. Liu, R. Müller,
F. Ravegnani, C. Schiller, A. Ulanovski, and M. Riese, Insight from ozone and water vapour on transport in the tropical tropopause layer (TTL), Atmos. Chem. Phys., 11, 407-419, 2011 K. S. Law, F. Fierli, F. Cairo, H. Schlager, S. Borrmann, M. Streibel, E. Real, D. Kunkel, C. Schiller, F. Ravegnani, A. Ulanovsky, F. D'Amato, S. Viciani, and C. M. Volk, Air mass origins influencing TTL chemical composition over West Africa during 2006 summer monsoon, Atmos. Chem. Phys., 10, 10753-10770, 2010 K. S. Law, F. Fierli, F. Cairo, H. Schlager, S. Borrmann, M. Streibel, E. Real, D. Kunkel, C. Schiller, F. Ravegnani, A. Ulanovsky, F. D'Amato, S. Viciani, and C. M. Volk Corrigendum to "Air mass origins influencing TTL chemical composition over West Africa during 2006 summer monsoon" published in Atmos. Chem. Phys., 10, 10753–10770, 2010, Atmos. Chem. Phys., 10, 10939-10940, 2010 F. Fierli, E. Orlandi, K. S. Law, C. Cagnazzo, F. Cairo, C. Schiller, S. Borrmann, G. Di Donfrancesco, F. Ravegnani, and C. M. Volk, Impact of deep convection in the tropical tropopause layer in West Africa: in-situ observations and mesoscale modelling, Atmos. Chem. Phys., 11, 201-214, 2011 J.-P. Pommereau, A. Garnier, G. Held, A. M. Gomes, F. Goutail, G. Durry, F. Borchi, A. Hauchecorne, N. Montoux, P. Cocquerez, G. Letrenne, F. Vial, A. Hertzog, B. Legras, I. Pisso, J. A. Pyle, N. R. P. Harris, R. L. Jones, A. D. Robinson, G. Hansford, L. Eden, T. Gardiner, N. Swann, B. Knudsen, N. Larsen, J. K. Nielsen, T. Christensen, F. Cairo, F. Fierli, M. Pirre, V. Marécal, N. Huret, E. D. Rivière, H. Coe, D. Grosvenor, K. Edvarsen, G. Di Donfrancesco, P. Ricaud, J.-J. Berthelier, M. Godefroy, E. Seran, K. Longo, and S. Freitas, An overview of the HIBISCUS campaign, Atmos. Chem. Phys., 11, 2309-2339, 2011 Moisture sources for Central America: Identification of moisture sources using a Lagrangian analysis technique, Duran-Quesada, AM; Gimeno, L; Amador, JA, et al. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES Volume: 115 Article Number: D05103 Published: 2010 Major sources of moisture for Antarctic ice-core sites identified through a Lagrangian approach, Nieto, R; Duran-Quesada, AM; Gimeno, L, CLIMATE RESEARCH Volume: 41 Issue: 1 Pages: 45-49 Published: 2010 Where Does the Iberian Peninsula Moisture Come From? An Answer Based on a Lagrangian Approach, Gimeno, L; Nieto, R; Trigo, RM, et al., JOURNAL OF HYDROMETEOROLOGY Volume: 11 Issue: 2 Pages: 421-436 Published: 2010 The water and energy cycles in the Tropics, Roca, R; Berges, JC; Brogniez, H, et al. COMPTES RENDUS GEOSCIENCE Volume: 342 Issue: 4-5 Pages: 390-402 Published: 2010 Tropical dehydration processes constrained by the seasonality of stratospheric deuterated water, Steinwagner, J; Fueglistaler, S; Stiller, G, et al., NATURE GEOSCIENCE Volume: 3 Issue: 4 Pages: 262-266 Published: 2010 Influences of the Indian Summer Monsoon on Water Vapor and Ozone Concentrations in the UTLS as Simulated by Chemistry-Climate Models, Kunze, M; Braesicke, P;
Langematz, U, et al. JOURNAL OF CLIMATE Volume: 23 Issue: 13 Pages: 3525-3544 Published: 2010 WG3 and WG4 Moisture sources for Central America: Identification of moisture sources using a Lagrangian analysis technique (vol 115, D12123, 2010), Duran-Quesada, AM; Gimeno, L; Amador, JA, et al., JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES Volume: 115 Article Number: D12123 Published: 2010 S. Tilmes, L. L. Pan, P. Hoor, E. Atlas, M. A. Avery, T. Campos, L. E.Cristensen, G. S. Diskin, R.-S. Gao, R. L. Herman, E. J. Hintsa, M. Loewenstein, J. Lopez, M. E. Paige, J. V. Pittman, J. R. Podolske, J. R. Proffitt, G. W. Sachse, C. Schiller, H. Schlager, J. Smith, N. Spelten, C. Webster, A. Weinheimer, M. A. Zondlo, An Aircraft-based Upper Troposphere Lower Stratosphere O3, CO and H2O Climatology for the Northern Hemisphere., J. Geophys. Res., doi:10.1029/2009JD012731, (2010). Lahoz, W.A., Q. Errera, S. Viscardy and G.L. Manney, 2010: The 2009 stratospheric major warming described from synergistic use of BASCOE water vapour analyses and MLS observations. Atmos. Chem. Phys. Disc., 10, 24699-24734. C. Cagnazzo, E. Manzini, P.G. Fogli, and F. Fierli, Global Water Vapor variations in the Upper Troposphere and Lower Stratosphere in a coupled stratosphere-troposphere-ocean model, Abstract for the WCRP Conference, 2011 II.D. Self evaluation The main event of the action was the lively Venice summer. The action will organize a final event and a special issue where it is planned to publish a relevant number of papers (10 proposed up to date). WG3 is getting more momentum, thanks to the involvement in large strategic projects. The progress toward objectives is still slower than expected and it is difficult to accomplish the objectives stated initially due to the limited number of groups. On the other hand the established linkage with WCRP SPARC Dynvar initiative and the EU/COMBINE project will ensure to pursue the activity initially foreseen in WAVACS. 5 STSMs were implemented during this reporting period (most of them were stimulated by the school). The school provided also an ideal location where young scientists have met. Past STSMs were indeed successful and results of collaborations are collected in several publications. In global, we consider that the action has implemented all the means foreseen by COST. The figures (reasonably high number of STSMs (11), two schools, several focused workshops and a final event with 50 participants registered before the end of registration) shows that the action reached its maturity stage and is well placed in the broader scientific community. The plan for the last months of the action has been drawn during the V MC and no major problems have been encountered. Last but not least, the community involved in WAVACS prepared a new COST action proposal, focusing on ice clouds, a key specific aspect of our activity. Again, the support of the COST office has been always remarkable.