People


Name ORCID Organizations Publications
H. J. Van der Fels-Klerx 0000-0002-7801-394X Wageningen University Food Safety Research Aflatoxin B1 contamination in maize in Europe increases due to climate change
Kees van der Geest 0000-0002-5013-1004 United Nations University Institute for Environment and Human Security nca4 chapter 27 : Hawai‘i and US-Affiliated Pacific Islands Loss and damage from climate change: Local-level evidence from nine vulnerable countries
Thomas L. Vandergon Pepperdine University Natural Science Division Effects of natural flooding and manual trapping on the facilitation of invasive crayfish–native amphibian coexistence in a semi-arid perennial stream
Marcel van der Heijden Agroscope Reckenholz-Tanikon Research Station VU University Amsterdam Department of Ecological Science Adapt or disperse: Understanding species persistence in a changing world
Melanie Vanderhoof 0000-0002-0101-5533 Clark University Graduate School of Geography Large carbon release legacy from bark beetle outbreaks across Western United States
Dan van der Horst 0000-0002-9454-9664 University of Birmingham School of Geography, Earth and Environmental Sciences NIMBY or not? Exploring the relevance of location and the politics of voiced opinions in renewable energy siting controversies
Wim van der Knaap 0000-0002-3888-9138 Wageningen University Land Use Planning Group The mitigation–adaptation dichotomy and the role of spatial planning
Mark J. van der Laan University of California, Berkeley Biostatistics Program Statistical estimation of parameters in a disease transmission model: Analysis of a Cryptosporidium outbreak
Paul van der Linden Intergovernmental Panel on Climate Change Working Group I Technical Support Unit Intergovernmental Panel on Climate Change Working Group II Technical Support Unit Met Office Hadley Centre Climate Change 2007: Impacts, Adaptation and Vulnerability. Contribution of Working Group II to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change Climate Change 2001: The Scientific Basis. Contribution of Working Group I to the Third Assessment Report of the Intergovernmental Panel on Climate Change
Gro van der Meeren Institute of Marine Research Hjort Centre for Marine Ecosystem Dynamics Institute of Marine Research IMR Integrated Marine Biosphere Research IMBeR Strong fisheries management and governance positively impact ecosystem status
Dominique van der Mensbrugghe Food and Agriculture Organization of the United Nations Agricultural Development Economics Division (ESA) Climate change effects on agriculture: Economic responses to biophysical shocks Agriculture and climate change in global scenarios: Why don't the models agree
Sander van der Ploeg 0000-0002-1909-9042 Wageningen University Environmental Systems Analysis Group Changes in the global value of ecosystem services
Mark W. Vandersea National Oceanic and Atmospheric Administration Center for Coastal Fisheries and Habitat Research Taxonomy of Gambierdiscus including four new species, Gambierdiscus caribaeus, Gambierdiscus carolinianus, Gambierdiscus carpenteri and Gambierdiscus ruetzleri (Gonyaulacales, Dinophyceae) Global distribution of ciguatera causing dinoflagellates in the genus Gambierdiscus
Robert R. Vanderslice Brown University Department of Epidemiology State of Rhode Island Department of Health Current and projected heat-related morbidity and mortality in Rhode Island
Jeroen P. van der Sluijs 0000-0002-1346-5953 Copernicus Institute of Sustainable Development Health risks of climate change: An assessment of uncertainties and its implications for adaptation policies
Laurens van der Tak CH2M HILL CH2M HILL Climate Services Confronting Climate Change: An Early Analysis of Water and Wastewater Adaptation Costs Through 2050 Storm Sewer Infrastructure Planning with Climate Change Risk: The City of Alexandria Virginia Case Study
Arnold van der Valk Iowa State University Northern Prairie Wetlands...
Marijn van der Velde International Institute for Applied Systems Analysis Ecosystems Services Management Program Effects of climate extremes on the terrestrial carbon cycle: Concepts, processes and potential future impacts Climate extremes and the carbon cycle
Kathy Vandervoorts Montefiore Medical Center Office of the President – Strategic Planning & Business Development Effects of the August 2003 blackout on the New York City healthcare delivery system: A lesson for disaster preparedness
Tamme Van der Wal 0000-0002-7023-3358 Alterra Wageningen Environmental Research Precision agriculture technologies positively contributing to GHG emissions mitigation, farm productivity and economics
Jeremy VanDerWal 0000-0001-7439-8953 James Cook University Division of Research and Innovation James Cook University School of Marine and Tropical Biology Centre for Tropical Biodiversity and Climate Change Research Quantifying the benefit of early climate change mitigation in avoiding biodiversity loss Immigrants and refugees: The importance of dispersal in mediating biotic attrition under climate change The pace of past climate change vs. potential bird distributions and land use in the United States
Mark C. Vanderwel Microsoft Research Cambridge Computational Ecology and Environmental Science Group University of Florida Department of Biology Quantifying variation in forest disturbance, and its effects on aboveground biomass dynamics, across the eastern United States
Guido R. van der Werf 0000-0001-9042-8630 VU University Amsterdam Department of Hydrology and Geo-environmental Sciences VU University Amsterdam Faculty of Earth and Life Sciences Global fire emissions and the contribution of deforestation, savanna, forest, agricultural, and peat fires (1997–2009) Carbon emissions from land use and land-cover change Contribution of anthropogenic and natural sources to atmospheric methane variability Fire in the Earth System Contribution of semi-arid ecosystems to interannual variability of the global carbon cycle Trends in the sources and sinks of carbon dioxide Global carbon budget 2014
Karin van der Wiel 0000-0001-9365-5759 National Oceanic and Atmospheric Administration Geophysical Fluid Dynamics Laboratory Princeton University Program in Atmospheric and Oceanic Sciences Royal Netherlands Meteorological Institute R&D Weather and Climate Models Rapid attribution of the August 2016 flood-inducing extreme precipitation in south Louisiana to climate change Attribution of extreme rainfall from Hurricane Harvey, August 2017
M. Jake Vander Zanden 0000-0002-8122-1416 University of Wisconsin-Madison Center for Limnology State of the world's freshwater ecosystems: Physical, chemical, and biological changes What a difference a species makes: a meta–analysis of dreissenid mussel impacts on freshwater ecosystems
Stacy D. VanDeveer University of New Hampshire University of New Hampshire Department of Political Science Political Science and Prediction: What's Next for U.S. Climate Change Policy? Changing Climates in North Ame... Roadmap towards justice in urban climate adaptation research
Justin Vandever Philip Williams and Associates, Ltd. A methodology for predicting future coastal hazards due to sea-level rise on the California Coast
R. S. W. van de Wal Utrecht University Institute for Marine and Atmospheric Research Twentieth-Century Global-Mean Sea Level Rise: Is the Whole Greater than the Sum of the Parts? Exploring high-end scenarios for local sea level rise to develop flood protection strategies for a low-lying delta—the Netherlands as an example Projecting twenty-first century regional sea-level changes The role of albedo and accumulation in the 2010 melting record in Greenland On the state dependency of fast feedback processes in (paleo) climate sensitivity Making sense of palaeoclimate sensitivity
Jessica L. VandeWalle Detection of the human specific Bacteroides genetic marker provides evidence of widespread sewage contamination of stormwater in the urban environment
Brandy S. VanDeWalle University of Nebraska-Lincoln Fillmore County Extension Center Nebraska Agricultural Water Management Demonstration Network (NAWMDN): Integrating Research and Extension/Outreach
Laurie C. Van De Werfhorst University of California, Santa Barbara Bren School of Environmental Science and Management University of California, Santa Barbara Earth Research Institute Sewage exfiltration as a source of storm drain contamination during dry weather in urban watersheds
Jan van Dijk Liverpool University Climate and Infectious Diseases of Animals group (LUCINDA) Climate change and infectious disease: helminthological challenges to farmed ruminants in temperate regions
Rita Van Dingenen European Commission Joint Research Centre A multi-model assessment of the co-benefits of climate mitigation for global air quality Simultaneously Mitigating Near-Term Climate Change and Improving Human Health and Food Security Climate, health, agricultural and economic impacts of tighter vehicle-emission standards
Ellen van Donk 0000-0003-3279-4936 Netherlands Institute of Ecology NIOO-KNAW Warmer climates boost cyanobacterial dominance in shallow lakes
Simon Van Donk Iteris, Inc. Economic return versus crop water productivity of maize for various nitrogen rates under full irrigation, limited irrigation, and rainfed settings in south central Nebraska
Jeff Van Dorn ATMOS Research & Consulting Regional climate change projections for Chicago and the US Great Lakes Global Pyrogeography: the Current and Future Distribution of Wildfire Climate change and disruptions to global fire activity An integrated framework for quantifying and valuing climate change impacts on urban energy and infrastructure: A Chicago case study Change in ozone air pollution over Chicago associated with global climate change
Meredith Van Dyke Great Lakes WATER Institute Distribution and Fate of Escherichia coli in Lake Michigan Following Contamination with Urban Stormwater and Combined Sewer Overflows
Pavla Vaneckova Queensland University of Technology Institute of Health and Biomedical Innovation Queensland University of Technology School of Public Health Ambient Temperature and Morbidity: A Review of Epidemiological Evidence Projecting Future Heat-Related Mortality under Climate Change Scenarios: A Systematic Review
Michel J. G. van Eeten Delft University of Technology Faculty of Technology, Policy and Management Bringing actors together around large-scale water systems: Participatory modeling and other innovations The state and the threat of cascading failure across critical infrastructures: The implications of empirical evidence from media incident reports
Ahna L. Van Gaest Northwest Fisheries Science Center Environmental and Fisheries Sciences Division The impact of temperature stress and pesticide exposure on mortality and disease susceptibility of endangered Pacific salmon
Sitaram Vangala University of California, Los Angeles Department of Medicine Division of General Internal Medicine and Health Services Research Heat death Associations with the built environment, social vulnerability and their interactions with rising temperature
Lorenzo Vangelista Consorzio Futuro in Ricerca CFR Internet of things for smart cities
Jurgen Vangeyte Institute for Agriculture, Fisheries and Food Research ILVO Precision agriculture technologies positively contributing to GHG emissions mitigation, farm productivity and economics
Hans van Grinsven PBL Netherlands Environmental Assessment Agency The European Nitrogen Assessme...
Ivor van Heerden Louisiana State University Department of Civil and Environmental Engineering The MRGO Navigation Project: A Massive Human-Induced Environmental, Economic, and Storm Disaster
Miranda Van Hooff 0000-0002-9376-3714 Centre for Australian Military and Veterans’ Health Impact of childhood exposure to a natural disaster on adult mental health: 20-year longitudinal follow-up study
David J. Van Horn The University of New Mexico Department of Biology Nutrient dynamics in an alpine headwater stream: Use of continuous water quality sensors to examine responses to wildfire and precipitation events Extreme water quality degradation following a catastrophic forest fire
Beatrice Van Horne U.S. Department of Agriculture Northwest Climate Hub U.S. Forest Service nca4 chapter 24 : Northwest Northwest U.S. agriculture in a changing climate: Collaboratively defined research and extension priorities
Kyle S. Van Houtan 0000-0001-5725-1773 Duke University Nicholas School of the Environment National Oceanic and Atmospheric Administration Pacific Islands Fisheries Science Center US protected lands mismatch biodiversity priorities
Mark van Kleunen 0000-0002-2861-3701 University of Konstanz Department of Biology Do invasive alien plants benefit more from global environmental change than native plants?
Sara Van Klooster University of Wisconsin-Milwaukee Department of Mathematical Sciences Atmospheric Science Research Program Surface-based convective potential in the contiguous United States in a business-as-usual future climate
G. Cornelis van Kooten University of Victoria Department of Economics Costs and Losses Imposed on California Ranchers by Yellow Starthistle
Matthew M. VanLandeghem Texas Cooperative Fish and Wildlife Research Unit Texas Tech University Department of Natural Resources Management Retrospective analysis of associations between water quality and toxic blooms of golden alga (Prymnesium parvum) in Texas reservoirs: Implications for understanding dispersal mechanisms and impacts of climate change
Mark VanLandingham Tulane University Department of International Health and Development One year later: Mental illness prevalence and disparities among New Orleans residents displaced by Hurricane Katrina
Phillip J. van Mantgem 0000-0002-3068-9422 U.S. Geological Survey Redwood Field Station U.S. Geological Survey Western Ecological Research Center Widespread Increase of Tree Mortality Rates in the Western United States Does prescribed fire promote resistance to drought in low elevation forests of the Sierra Nevada, California, USA? Duration of fuels reduction following prescribed fire in coniferous forests of U.S. national parks in California and the Colorado Plateau
Erik Vanmarcke Princeton University Department of Civil and Environmental Engineering Physically based assessment of hurricane surge threat under climate change
Hans van Meijl 0000-0002-2455-6869 Wageningen University and Research Centre Agricultural Economics Research Institute LEI Assessing uncertainties in land cover projections Agriculture and climate change in global scenarios: Why don't the models agree Climate change effects on agriculture: Economic responses to biophysical shocks
Thomas Van Niel 0000-0001-8445-5448 Commonwealth Scientific and Industrial Research Organisation Land and Water Global review and synthesis of trends in observed terrestrial near-surface wind speeds: Implications for evaporation
Marjorie Vannieuwenhuyse Karlsruhe Institute of Technology Center for Disaster Management and Risk Reduction Technology CEDEM Karlsruhe Institute of Technology Institute for Industrial Production IIP Investigation of superstorm Sandy 2012 in a multi-disciplinary approach
Meine van Noordwijk 0000-0002-7791-4703 World Agroforestry Centre Southeast Asia Regional Office Inaugural Article: Knowledge Systems for Sustainable Development Special Feature Sackler Colloquium: Boundary work for sustainable development: Natural resource management at the Consultative Group on International Agricultural Research (CGIAR)
Julie A. Vano University of Washington Department of Civil Engineering University of Washington Department of Civil and Environmental Engineering Climate change impacts on water management and irrigated agriculture in the Yakima River Basin, Washington, USA Understanding uncertainties in future Colorado River streamflow Evaluating climate change over the Colorado River basin using regional climate models The importance of warm season warming to western U.S. streamflow changes Implications of 21st century climate change for the hydrology of Washington State Climate change impacts on water management in the Puget Sound region, Washington State, USA Preparing for climate change in Washington State
Geert Jan van Oldenborgh 0000-0002-6898-9535 Royal Dutch Meteorological Institute Department of Climate Research and Seismology Royal Netherlands Meteorological Institute KNMI Royal Netherlands Meteorological Institute R&D Weather and Climate Models How unusual was the cold winter of 2013/14 in the Upper Midwest? [in “Explaining Extreme Events of 2014 from a Climate Perspective”] Reconciling two approaches to attribution of the 2010 Russian heat wave Reliability of regional climate model trends Attribution of extreme rainfall from Hurricane Harvey, August 2017 Is a decline of AMOC causing the warming hole above the North Atlantic in observed and modeled warming patterns? Rapid attribution of the August 2016 flood-inducing extreme precipitation in south Louisiana to climate change
Tas van Ommen 0000-0002-2463-1718 Antarctic Climate and Ecosystems Cooperative Research Centre Australian Department of the Environment and Energy Australian Antarctic Division Continental-scale temperature variability during the past two millennia Law Dome CO2, CH4 and N2O ice core records extended to 2000 years BP
Maarten van Ormondt 0000-0002-1745-4688 Deltares Projected wave conditions in the Eastern North Pacific under the influence of two CMIP5 climate scenarios
Jennifer K. Vanos Texas Tech University Department of Geosciences Texas Tech University Department of Geosciences Atmospheric Science Group Hot playgrounds and children's health: A multiscale analysis of surface temperatures in Arizona, USA Detecting synoptic warming trends across the US midwest and implications to human health and heat-related mortality Designing urban parks that ameliorate the effects of climate change Rising temperatures, human health, and the role of adaptation
Marc Van Ranst 0000-0002-1674-4157 Rega Institute for Medical Research Laboratory of Clinical Virology and Chemotherapy Relating increasing hantavirus incidences to the changing climate: The mast connection
Denise L. Vanroekel City of Sioux Falls Health Department Weather and land cover influences on mosquito populations in Sioux Falls, South Dakota
Bas J. van Ruijven 0000-0003-1232-5892 National Center for Atmospheric Research PBL Netherlands Environmental Assessment Agency RCP2.6: exploring the possibility to keep global mean temperature increase below 2°C The roads ahead: Narratives for shared socioeconomic pathways describing world futures in the 21st century
Gary Van Ryswyk Van Ryswyk Farms Prairie strips improve biodiversity and the delivery of multiple ecosystem services from corn–soybean croplands
Robert Van Saun 0000-0001-9800-2255 The Pennsylvania State University College of Agriculture Agriculture: Steps to sustainable livestock
Phan Van Tan 0000-0003-0756-1217 Hanoi University of Science Atmospheric Brown Clouds: Regional Assessment Report with Focus on Asia
Astrid J.A. van Teeffelen 0000-0003-4249-083X VU University Amsterdam Department of Earth Sciences Environmental Geography Group Green infrastructure for urban climate adaptation: How do residents’ views on climate impacts and green infrastructure shape adaptation preferences?
Jasper van Vliet PBL Netherlands Environmental Assessment Agency RCP2.6: exploring the possibility to keep global mean temperature increase below 2°C
Michelle T. H. van Vliet 0000-0002-2597-8422 International Institute for Applied Systems Analysis IIASA Utrecht University Department of Physical Geography Wageningen University Earth System Science Chair Group Wageningen University Water Systems and Global Change Group Vulnerability of US and European electricity supply to climate change Multi-model assessment of global hydropower and cooling water discharge potential under climate change Impact of summer droughts on the water quality of the Meuse river Impact of summer droughts on water quality of the Rhine River - a preview of climate change? Power-generation system vulnerability and adaptation to changes in climate and water resources
Detlef van Vuuren 0000-0003-0398-2831 Copernicus Institute of Sustainable Development Copernicus Institute of Sustainable Development Environmental Sciences Research Group National Institute for Public Health and the Environment RIVM PBL Netherlands Environmental Assessment Agency Utrecht University Utrecht University Department of the Geosciences Utrecht University Department of Physical Geography The roads ahead: Narratives for shared socioeconomic pathways describing world futures in the 21st century Scenarios towards limiting global mean temperature increase below 1.5 °C A new scenario framework for climate change research: The concept of shared climate policy assumptions A multi-model assessment of the co-benefits of climate mitigation for global air quality The RCP greenhouse gas concentrations and their extensions from 1765 to 2300 Non-Kyoto radiative forcing in long-run greenhouse gas emissions and climate change scenarios The next generation of scenarios for climate change research and assessment Assessing inter-sectoral climate change risks: The role of ISIMIP Harmonization of land-use scenarios for the period 1500–2100: 600 years of global gridded annual land-use transitions, wood harvest, and resulting secondary lands A new scenario framework for climate change research: The concept of shared socioeconomic pathways Downscaling drivers of global environmental change: Enabling use of global SRES scenarios at the national and grid levels A special issue on the RCPs RCP2.6: exploring the possibility to keep global mean temperature increase below 2°C A proposal for a new scenario framework to support research and assessment in different climate research communities rcp_2_6 A new scenario framework for climate change research: Scenario matrix architecture The representative concentration pathways: an overview Exploring the ancillary benefits of the Kyoto Protocol for air pollution in Europe Adaptation in integrated assessment modeling: where do we stand? Biophysical and economic limits to negative CO2 emissions
Berna van Wendel de Joode 0000-0001-9699-5046 Central American Institute for Studies on Toxic Substances Worker health and safety and climate change in the Americas: Issues and research needs
Robert Van Woesik 0000-0002-1864-0263 Florida Institute of Technology Department of Biological Sciences Contemporary white-band disease in Caribbean corals driven by climate change
Berte Van Wyk Stellenbosch University Indigenous Concepts of Educati...
Shannon Van Zandt Texas A&M University College Station Planning for climate adaptation: Evaluating the changing patterns of social vulnerability and adaptation challenges in three coastal cities
Alissa R. Van Zutphen New York State Department of Health Center for Environmental Health State University of New York at Albany Department of Epidemiology and Biostatistcs Excessive heat and respiratory hospitalizations in New York State: Estimating current and future public health burden related to climate change
Olli Vapalahti 0000-0003-2270-6824 University of Helsinki Faculty of Veterinary Medicine University of Helsinki Haartman Institute Department of Virology A global perspective on hantavirus ecology, epidemiology, and disease
Sotiris Vardoulakis 0000-0003-3944-7128 Centre for Radiation, Chemical, and Environmental Hazards Environmental Change Department Institute of Occupational Medicine IOM London School of Hygiene and Tropical Medicine Department of Social and Environmental Health Research University of Exeter European Centre for Environment and Human Health Challenges in developing methods for quantifying the effects of weather and climate on water-associated diseases: A systematic review Changes in population susceptibility to heat and cold over time: Assessing adaptation to climate change
Juan F. Vargas 0000-0001-8090-8091 Del Rosario University Commodity price shocks and civil conflict: Evidence from Colombia
Rodrigo Vargas 0000-0001-6829-5333 Center for Scientific Research and Higher Education of Ensenada Department of Biology of Conservation Ensenada Center for Scientific Research and Higher Education CICESE University of California, Berkeley Department of Environmental Science, Policy, and Management University of Delaware Second State of the Carbon Cycle Report (SOCCR2): A Sustained Assessment Report second-state-carbon-cycle-report-soccr2-sustained-assessment-report chapter 2 : The North American Carbon Budget Recent rates of forest harvest and conversion in North America Terrestrial biosphere models need better representation of vegetation phenology: Results from the North American Carbon Program Site Synthesis Influence of spring and autumn phenological transitions on forest ecosystem productivity
Bernardo Vargas-Ángel Joint Institute for Marine and Atmospheric Research National Oceanic and Atmospheric Administration Pacific Islands Fisheries Science Center Ecosystem Sciences Division Ecological impacts of the 2015/16 El Niño in the central equatorial Pacific [in "Explaining Extreme Events of 2016 From a Climate Perspective]
Juan Carlos Vargas-Moreno Massachusetts Institute of Technology Restoring Lands - Coordinating...
Elsy Varghese WorleyParsons Group Cost and Performance Baseline for Fossil Energy Plants Volume 1: Bituminous Coal and Natural Gas to Electricity Revision 2, November 2010. DOE/NETL-2010/1397
Jason Vargo 0000-0002-4785-6936 University of Wisconsin-Madison Nelson Institute Center for Sustainability and the Global Environment University of Wisconsin-Madison nca4 chapter 21 : Midwest Avoided heat-related mortality through climate adaptation strategies in three US cities Rising heat wave trends in large US cities Climate change adaptation through urban heat management in Atlanta, Georgia
Chelsea Vario Dartmouth College Department of Biological Sciences Marine Biological Laboratory Ecosystems Center Soil warming, carbon-nitrogen interactions, and forest carbon budgets
Jayachandran Variyam U.S. Department of Agriculture Economic Research Service Health Status and Health Care Access of Farm and Rural Populations. Economic Information Bulletin Number 57
Andrej Varlagin 0000-0002-2549-5236 A.N. Severtsov Institute of Ecology and Evolution Influence of spring and autumn phenological transitions on forest ecosystem productivity
Girish Varma Kerala Veterinary and Animal Sciences University Centre for Animal Adaptation to Environment and Climate Change Studies Heat stress and dairy cow: Impact on both milk yield and composition
Johanna Varner 0000-0001-9431-0760 Colorado Mesa University Department of Biological Sciences Behavioral flexibility as a mechanism for coping with climate change
Julian Morgan Varner 0000-0003-3781-5839 Mississippi State University Forest and Wildlife Research Center Toward a mechanism for eastern North American forest mesophication: Differential litter drying across 17 species
S.K. Varney Intergovernmental Panel on Climate Change Working Group I Climate Change 1992: The Supplementary Report to the IPCC Scientific Assessment
Gary E. Varvel U.S. Department of Agriculture Agricultural Research Service Agroecosystem Management Research Crop residue mass needed to maintain soil organic carbon levels: Can it be determined? Multilocation corn stover harvest effects on crop yields and nutrient removal
Anti Vasemägi 0000-0002-2184-5534 Estonian University of Life Sciences Department of Aquaculture University of Turku Department of Biology Division of Genetics and Physiology Parasite infection and decreased thermal tolerance: Impact of proliferative kidney disease on a wild salmonid fish in the context of climate change
Marcela Vasquez The University of Arizona Bureau of Applied Research in Anthropology The University of Arizona Latin American Area Center The University of Arizona nca3 chapter 14 : Rural Communities Hispanic Farmers and Farmworkers: Social Networks, Institutional Exclusion, and Climate Vulnerability in Southeastern Arizona
Ramón Vásquez University of Puerto Rico at Mayagüez Department of Computer and Electrical Engineering Satellite sub-pixel rainfall variability
Jennifer Vasterling 0000-0003-2784-6375 Boston University School of Medicine Department of Psychiatry VA Boston Healthcare System National Center for PTSD Preexisting mental illness and risk for developing a new disorder after hurricane Katrina