نوشته شده توسط سيداحمدخزايي دسته: Meteorological Essays ( مقالات هواشناسي )
نمایش از 19 آبان 1392 بازدید: 54
پرینت

Cold-Season Thunderstorms in Finland and Their Effect on Aviation Safety

A. Mäkelä , E. Saltikoff , J. Julkunen , I. Juga , E. Gregow , and S. Niemelä

Finnish Meteorological Institute, Helsinki, Finland

Abstract:

A total of 13 commercial airplanes were struck by lightning in October (10 in 1 day) and December (3 on 3 separate days) 2011 in the main Finnish Helsinki–Vantaa airport. The number of lightning-struck airplanes is extremely large, considering the time of year and the small number of flashes by the storms.

ادامه مطلب: Cold-Season Thunderstorms in Finland and Their Effect on Aviation Safety
 
نوشته شده توسط سيداحمدخزايي دسته: Meteorological Essays ( مقالات هواشناسي )
نمایش از 19 آبان 1392 بازدید: 65
پرینت

Analogies of Ocean/Atmosphere Rotating Fluid Dynamics with Gyroscopes: Teaching Opportunities

Thomas W. N. Haine

Earth and Planetary Sciences, The Johns Hopkins University, Baltimore, Maryland

Deepak A. Cherian

Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts

 The dynamics of the rotating shallow-water (RSW) system include geostrophic f low and inertial oscillation. These classes of motion are ubiquitous in the ocean and atmosphere. They are often surprising to people at first because intuition about rotating f luids is uncommon, especially the counterintuitive effects of the Coriolis force.

ادامه مطلب: Analogies of Ocean/Atmosphere Rotating Fluid Dynamics with Gyroscopes: Teaching Opportunities
 
نوشته شده توسط سيداحمدخزايي دسته: Meteorological Essays ( مقالات هواشناسي )
نمایش از 19 آبان 1392 بازدید: 69
پرینت

A Need for “Actionable” Climate Science and Information: Summary of WCRP Open Science Conference

Ghassem R. Asrar ,

World Meteorological Organization, Geneva, Switzerland

James W. Hurrell , and

NCAR Earth System Laboratory, Boulder, Colorado

Antonio J. Busalacchi

WCRP Joint Scientific Committee and Director of Earth System Science Interdisciplinary Center, University of Maryland, College Park, Maryland

Final Form: July 25, 2012

CORRESPONDING AUTHOR: Ghassem R Asrar, World Climate Research Program, World Meteorological Organization, Research Department, 7 bis Avenue de la Paix, Case Postale 2000, CH-1211 Geneva 2, Switzerland, E-mail: این آدرس ایمیل توسط spambots حفاظت می شود. برای دیدن شما نیاز به جاوا اسکریپت دارید

 The demand for and importance of understand- able information about climate is increasing, especially as extreme weather, climate events, and their adverse impacts on natural ecosystems and global economic development increase in frequency and severity. The complexity of the information requested for a diverse set of economic sectors and geographic regions around the world is also increasing, as reflected by the World Meteorological Organization's (WMO) creation of a global framework for climate services (GFCS) (WMO 2011).

ادامه مطلب: A Need for “Actionable” Climate Science and Information: Summary of WCRP Open Science Conference
 
نوشته شده توسط سيداحمدخزايي دسته: Meteorological Essays ( مقالات هواشناسي )
نمایش از 19 آبان 1392 بازدید: 47
پرینت

Uncertainty Quantification for Climate Observations

Jessica L. Matthews

Cooperative Institute for Climate and Satellites, North Carolina State University, and NOAA's National Climatic Data Center, Asheville, North Carolina

Elizabeth Mannshardt *

Program in Spatial Statistics and Environmental Statistics, The Ohio State University, Columbus, Ohio

Pierre Gremaud

Statistical and Applied Mathematical Sciences Institute, Research Triangle Park, North Carolina

Revised: March 5, 2012

*CURRENT AFFILIATION: Department of Statistics, North Carolina State University, Raleigh, North Carolina

CORRESPONDING AUTHOR: Jessica L. Matthews, NOAA's National Climatic Data Center, 151 Patton Avenue, Asheville, NC 28801, E-mail: این آدرس ایمیل توسط spambots حفاظت می شود. برای دیدن شما نیاز به جاوا اسکریپت دارید

EXECUTIVE SUMMARY.

Observations are key to uncertainty quantification (UQ) in climate research because they form the very basis for any evidence of climate change and provide a corroborating source of information about the way in which physical processes are modeled and understood. However, observations themselves possess uncertainties originating from many sources including measurement error and errors imposed by the algorithms generating derived products (see Fig. 1).

ادامه مطلب: Uncertainty Quantification for Climate Observations
 
نوشته شده توسط سيداحمدخزايي دسته: Meteorological Essays ( مقالات هواشناسي )
نمایش از 19 آبان 1392 بازدید: 74
پرینت

Toward Global Drought Early Warning Capability: Expanding International Cooperation for the Development of a Framework for Monitoring and Forecasting

Will Pozzi

Institute of Photogrammetry and Remote Sensing (IPF), Vienna University of Technology, Vienna, Austria

Justin Sheffield

Department of Civil and Environmental Engineering, Princeton University, Princeton, New Jersey

Robert Stefanski

Agricultural Meteorological Division, Climate and Water Department, World Meteorological Organization, Geneva, Switzerland

Douglas Cripe

Group on Earth Observations Secretariat, Geneva, Switzerland

Roger Pulwarty

National Integrated Drought Information System, Boulder, Colorado

Jürgen V. Vogt

European Commission, Joint Research Centre, Ispra, Italy

Richard R. Heim Jr. and Michael J. Brewer

NOAA National Climatic Data Center, Asheville, North Carolina

Mark Svoboda

Monitoring Program Area Leader, National Drought Mitigation Center, Lincoln, Nebraska

Rogier Westerhoff

Deltares, Delft, Netherlands

Albert I. J. M. van Dijk

Commonwealth Scientific and Industrial Research Organisation and Australian National University, Canberra, Australia

Benjamin Lloyd-Hughes

Walker Institute, University of Reading, United Kingdom

Florian Pappenberger ,

 Predictability and Diagnostics Section, European Centre for Medium-Range Weather Forecasts, Reading, United Kingdom

Micha Werner

UNESCO-IHE and Deltares, Delft, Netherlands

Emanuel Dutra and Fredrik Wetterhall

Predictability and Diagnostics Section, European Centre for Medium-Range Weather Forecasts, Reading, United Kingdom

Wolfgang Wagner

Institute of Photogrammetry and Remote Sensing (IPF), Vienna University of Technology, Vienna, Austria

Siegfried Schubert

NASA/GSFC, Greenbelt, Maryland

Kingtse Mo

U.S. Center for Climate Prediction, NOAA, Washington, D.C.

Margaret Nicholson

Australia Bureau of Agricultural and Economic Sciences, Canberra, Australia

Lynette Bettio

National Climate Centre, Bureau of Meteorology, Melbourne, Australia

Liliana Nunez

Argentina Servicio Meteorologico Nacional, Buenos Aires, Argentina

Rens van Beek and Marc Bierkens

Geosciences, Universiteit Utrecht, Netherlands

Luis Gustavo Goncalves de Goncalves and João Gerd Zell de Mattos

Centro de Previsão de Tempo e Estudos Climáticos, Instituto Nacional de Pesquisas Espaciais, São Paulo, Brazil

Richard Lawford

Morgan State University, Baltimore, Maryland

Abstract:

Drought is a global problem that has far-reaching impacts, especially on vulnerable populations in developing regions. This paper highlights the need for a Global Drought Early Warning System (GDEWS), the elements that constitute its underlying framework (GDEWF), and the recent progress made toward its development. Many countries lack drought monitoring systems, as well as the capacity to respond via appropriate political, institutional, and technological frameworks, and these have inhibited the development of integrated drought management plans or early warning systems.

ادامه مطلب: Toward Global Drought Early Warning Capability: Expanding International Cooperation for the...
 
نوشته شده توسط سيداحمدخزايي دسته: Meteorological Essays ( مقالات هواشناسي )
نمایش از 19 آبان 1392 بازدید: 61
پرینت

Tornado Debris Characteristics And Trajectories During The 27 April 2011 Super Outbreak As Determined Using Social Media Data

John A. Knox , Jared A. Rackley , and Alan W. Black

Department of Geography, University of Georgia, Athens, Georgia

Vittorio A. Gensini

Meteorology Program, College of DuPage, Glen Ellyn, Illinois

Michael Butler , Corey Dunn , Taylor Gallo , Melyssa R. Hunter , Lauren Lindsey , Minh Phan , and Robert Scroggs

Department of Geography, University of Georgia, Athens, Georgia

Synne Brustad

Department of Geosciences, University of Oslo, Oslo, Norway

Abstract:

Using publicly available information gleaned from over 1700 found-and-returned objects on the “Pictures and Documents found after the 27 April 2011 Tornadoes” Facebook page, the authors have created a database of 934 objects lofted by at least 15 different tornadoes during the 27 April 2011 Super Outbreak in the southeast United States.

ادامه مطلب: Tornado Debris Characteristics And Trajectories During The 27 April 2011 Super Outbreak As...
 
نوشته شده توسط سيداحمدخزايي دسته: Meteorological Essays ( مقالات هواشناسي )
نمایش از 19 آبان 1392 بازدید: 74
پرینت

The DTC Ensembles Task: A New Testing and Evaluation Facility for Mesoscale Ensembles

Edward I. Tollerud , Brian Etherton , and Zoltan Toth

 Developmental Testbed Center, Boulder, Colorado, and NOAA Earth System Research Laboratory (ESRL), Boulder, Colorado

Isidora Jankov

 Developmental Testbed Center, Boulder, Colorado; Precision Wind, Boulder, Colorado; and Cooperative Institute for Research in the Atmosphere, Colorado State University, Fort Collins, Colorado

Tara L. Jensen

 Developmental Testbed Center, Boulder, Colorado, and Research Application Laboratory, National Center for Atmospheric Research (NCAR), Boulder, Colorado

Huiling Yuan

 School of Atmospheric Science and Key Laboratory of Mesoscale Severe Weather/Ministry of Education, Nanjing University, Nanjing, Jiangsu, People's Republic of China

Linda S. Wharton and Paula T. McCaslin

 Developmental Testbed Center, Boulder, Colorado, and NOAA Earth System Research Laboratory (ESRL), Boulder, Colorado

Eugene Mirvis , Bill Kuo , Barbara G. Brown , and Louisa Nance

 Developmental Testbed Center, Boulder, Colorado, and Research Application Laboratory, National Center for Atmospheric Research (NCAR), Boulder, Colorado

Steven E. Koch

 NOAA National Severe Storms Laboratory, Norman, Oklahoma

F. Anthony Eckel

 National Weather Service Office of Science and Technology, Washington, D.C.

 CORRESPONDING AUTHOR: Edward I. Tollerud, NOAA/ESRL, 325 Broadway, Boulder, CO 80305-3328, E-mail: این آدرس ایمیل توسط spambots حفاظت می شود. برای دیدن شما نیاز به جاوا اسکریپت دارید

 The National Weather Service (NWS) has identified accelerated development of mesoscale probabilistic prediction and ensemble forecast systems as a critical requirement. In particular, NWS cosponsored a workshop in 2009 (resulting in a white paper by Eckel at al.) recognizing that the transition to probabilistic prediction and application is a vital but formidable task [with the] following goal: By 2015, the U.S. will implement a radically upgraded national capability for mesoscale probabilistic prediction to support current and future decision-making needs, helping return the U.S. to a world-leadership role in numerical weather prediction.

ادامه مطلب: The DTC Ensembles Task: A New Testing and Evaluation Facility for Mesoscale Ensembles
 
نوشته شده توسط سيداحمدخزايي دسته: Meteorological Essays ( مقالات هواشناسي )
نمایش از 19 آبان 1392 بازدید: 60
پرینت

The Concordiasi Field Experiment over Antarctica: First Results from Innovative Atmospheric Measurements

Florence Rabier

CNRM-GAME, Météo-France, and CNRS, Toulouse, France

Steve Cohn

NCAR/EOL, Boulder, Colorado

Philippe Cocquerez

Centre National d'Etudes Spatiales, Toulouse, France

Albert Hertzog

Laboratoire de Météorologie Dynamique, Palaiseau, France

Linnea Avallone

University of Colorado, Boulder, Colorado

Terry Deshler

University of Wyoming, Laramie, Wyoming

Jennifer Haase

Purdue University, West Lafayette, Indiana

Terry Hock

NCAR/EOL, Boulder, Colorado

Alexis Doerenbecher

CNRM-GAME, Météo-France, and CNRS, Toulouse, France

Junhong Wang

NCAR/EOL, Boulder, Colorado

Vincent Guidard

CNRM-GAME, Météo-France, and CNRS, Toulouse, France

Jean-Noël Thépaut

European Centre for Medium-Range Weather Forecasts, Reading, United Kingdom

Rolf Langland

Naval Research Laboratory, Monterey, California

Andrew Tangborn

Global Modeling and Assimilation Office, NASA, Greenbelt, Maryland

Gianpaolo Balsamo

European Centre for Medium-Range Weather Forecasts, Reading, United Kingdom

Eric Brun

CNRM-GAME, Météo-France, and CNRS, Toulouse, France

David Parsons

The Ohio State University, Athens, Ohio

Jérôme Bordereau

Laboratoire de Météorologie Dynamique, Palaiseau, France

Carla Cardinali

European Centre for Medium-Range Weather Forecasts, Reading, United Kingdom

François Danis

Laboratoire de Météorologie Dynamique, Palaiseau, France

Jean-Pierre Escarnot

Centre National d'Etudes Spatiales, Toulouse, France

Nadia Fourrié

CNRM-GAME, Météo-France, and CNRS, Toulouse, France

Ron Gelaro

Global Modeling and Assimilation Office, NASA, Greenbelt, Maryland

Christophe Genthon

Laboratoire de Glaciologie et Géophysique de l'Environnement, Grenoble, France

Kayo Ide

University of Maryland, College Park, College Park, Maryland

Lars Kalnajs

University of Colorado, Boulder, Colorado

Charlie Martin

NCAR/EOL, Boulder, Colorado

Louis-François Meunier

CNRM-GAME, Météo-France, and CNRS, Toulouse, France

Jean-Marc Nicot

Centre National d'Etudes Spatiales, Toulouse, France

Tuuli Perttula

Finnish Meteorological Institute, Helsinki, Finland

Nicholas Potts

NCAR/EOL, Boulder, Colorado

Patrick Ragazzo

Centre National d'Etudes Spatiales, Toulouse, France

David Richardson

European Centre for Medium-Range Weather Forecasts, Reading, United Kingdom

Sergio Sosa-Sesma and André Vargas

Centre National d'Etudes Spatiales, Toulouse, France

 

Revised: June 13, 2012

CORRESPONDING AUTHOR: Florence Rabier, Météo France, 42 avenue Gaspard Coriolis, 31057 Toulouse, France, E-mail: این آدرس ایمیل توسط spambots حفاظت می شود. برای دیدن شما نیاز به جاوا اسکریپت دارید

 CONCORDIASI WORKSHOP

What: Twenty-seven participants from the United States and Europe gathered to share and discuss the first results obtained from the 2010 Concordiasi field campaign in Antarctica. This is the second international workshop on Concordiasi.

ادامه مطلب: The Concordiasi Field Experiment over Antarctica: First Results from Innovative Atmospheric...
 
نوشته شده توسط سيداحمدخزايي دسته: Meteorological Essays ( مقالات هواشناسي )
نمایش از 13 آبان 1392 بازدید: 65
پرینت

Realizing the Potential of Vehicle-Based Observations

William P. Mahoney III

National Center for Atmospheric Research, Boulder, Colorado

James M. O'Sullivan

NOAA/National Weather Service, Silver Spring, Maryland

Abstract:

The potential availability of millions of surface observations from passenger vehicles and fleets represents a potentially significant opportunity for the weather community. The success of this opportunity rests with the weather community's technical understanding and eventual adoption of these unique datasets and their level of participation in connected vehicle initiatives within the transportation community.

ادامه مطلب: Realizing the Potential of Vehicle-Based Observations
 
نوشته شده توسط سيداحمدخزايي دسته: Meteorological Essays ( مقالات هواشناسي )
نمایش از 13 آبان 1392 بازدید: 53
پرینت

Promoting New Links Between Energy and Meteorology

Alberto Troccoli

Commonwealth Scientific and Industrial Research Organisation, Canberra, Australian Capital Territory, Australia

Pierre Audinet

World Bank, Washington, D.C.

Paolo Bonelli

Research on Energy Systems Spa, Milano, Italy

Mohammed S. Boulahya

ClimDev Africa, Tunis, Tunisia

Carlo Buontempo

Met Office, Reading, United Kingdom

Peter Coppin

Commonwealth Scientific and Industrial Research Organisation, Canberra, Australian Capital Territory, Australia

Laurent Dubus

Electricité de France, Paris, France

John A. Dutton

Prescient Weather Ltd., State College, Pennsylvania

Jane Ebinger

World Bank, Washington, D.C.

David Griggs

Monash University, Melbourne, Victoria, Australia

Sven-Erik Gryning

Technical University of Denmark, Roskilde, Denmark

Don Gunasekera

Commonwealth Scientific and Industrial Research Organisation, Canberra, Australian Capital Territory, Australia

Mike Harrison

 Climate-Insight, Wolverton Common, United Kingdom

Sue Ellen Haupt

National Center for Atmospheric Research, Boulder, Colorado

Trevor Lee

Exemplary Energy, Canberra, Australian Capital Territory, Australia

Pascal Mailier

Royal Meteorological Institute of Belgium, Brussels, Belgium

Pierre-Philippe Mathieu

European Space Agency, Frascati, Italy

Roberto Schaeffer

Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil

Marion Schroedter-Homscheidt

Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR), Wessling, Germany

Rong Zhu

China Meteorological Administration, Beijing, China

John Zillman

University of Melbourne, Melbourne, Victoria, Australia

Final Form: June 3, 2012

CORRESPONDING AUTHOR: Dr. Alberto Troccoli, Commonwealth Scientific and Industrial Research Organisation, Pye Laboratory, GPO Box 3023, Clunies Ross Street, Canberra ACT 2601, Australia, E-mail: این آدرس ایمیل توسط spambots حفاظت می شود. برای دیدن شما نیاز به جاوا اسکریپت دارید

ادامه مطلب: Promoting New Links Between Energy and Meteorology
 
نوشته شده توسط سيداحمدخزايي دسته: Meteorological Essays ( مقالات هواشناسي )
نمایش از 13 آبان 1392 بازدید: 73
پرینت

Possible Implications of Climate Engineering for Peace and Security

P. Michael Link *,

Research Group Climate Change and Security, KlimaCampus, Institute of Geography, University of Hamburg, Hamburg, Germany

Michael Brzoska

Institute for Peace Research and Security Policy, University of Hamburg, Germany

Achim Maas

Institute for Advanced Sustainability Studies, Potsdam, Germany

Götz Neuneck

Institute for Peace Research and Security Policy, University of Hamburg, Germany

Jürgen Scheffran

Research Group Climate Change and Security, KlimaCampus, Institute of Geography, University of Hamburg, Hamburg, Germany

Final Form: June 2, 2012

*ADDITIONAL AFFILIATION: Research Unit Sustainability and Global Change, Center for Earth System Research and Sustainability, University of Hamburg, Hamburg, Germany

CORRESPONDING AUTHOR: P. Michael Link, Research Group Climate Change and Security, KlimaCampus, University of Hamburg, Grindelberg 7 #2014, D-20144 Hamburg, Germany, E-mail: این آدرس ایمیل توسط spambots حفاظت می شود. برای دیدن شما نیاز به جاوا اسکریپت دارید

 There is a growing discussion about the intentional manipulation and control of the climate system—known as “geoengineering” or “climate engineering.” This is in part due to some scientists and political authorities considering geoengineering as a necessary “plan B” option for a “global last resort” to counter catastrophic climate change.

ادامه مطلب: Possible Implications of Climate Engineering for Peace and Security
 
نوشته شده توسط سيداحمدخزايي دسته: Meteorological Essays ( مقالات هواشناسي )
نمایش از 13 آبان 1392 بازدید: 62
پرینت

Forest Fire Effects on Air Quality in Ontario: Evaluation of Several Recent Examples

Frank Dempsey

Environmental Monitoring and Reporting Branch, Ontario Ministry of Environment, Etobicoke, Ontario, Canada

Abstract:

Several events were studied to examine the sources of smoke and pollutants that may affect air quality in Ontario as well as the transport mechanisms that result in effects on ground-level air quality. The selected events were strongly suspected of being influenced by forest fire smoke plumes and the evaluation of the events in this study confirmed (to a high degree of confidence) that smoke made a contribution to the measured pollutants.

ادامه مطلب: Forest Fire Effects on Air Quality in Ontario: Evaluation of Several Recent Examples
 
نوشته شده توسط سيداحمدخزايي دسته: Meteorological Essays ( مقالات هواشناسي )
نمایش از 13 آبان 1392 بازدید: 66
پرینت

Evaluating and Improving Cloud Parameter Retrievals

Rob Roebeling

EUMETSAT, Darmstadt, Germany

Bryan Baum , Ralf Bennartz

University of Wisconsin—Madison, Madison, Wisconsin

Ulrich Hamann

Royal Netherlands Meteorological Institute (KNMI), De Bilt, The Netherlands

Andy Heidinger

Center for Satellite Applications and Research, NOAA/NESDIS, Madison, Wisconsin

Anke Thoss

Swedish Meteorological and Hydrological Institute (SMHI), Norrköping, Sweden

Andi Walther

University of Wisconsin—Madison, Madison, Wisconsin

 Received: August 14, 2012

CORRESPONDING AUTHOR: R. A. Roebeling, EUMETSAT, Eumetsat Allee 1, D-64295 Darmstadt, Germany, E-mail: این آدرس ایمیل توسط spambots حفاظت می شود. برای دیدن شما نیاز به جاوا اسکریپت دارید

 RECOMMENDATIONS FROM THE MEETING

•           Increase focus on detection and analysis of multiple-layer clouds;

•           Increase the skill of cloud property retrievals from infrared observations;

ادامه مطلب: Evaluating and Improving Cloud Parameter Retrievals
 
نوشته شده توسط سيداحمدخزايي دسته: Meteorological Essays ( مقالات هواشناسي )
نمایش از 08 آبان 1392 بازدید: 80
پرینت

WMO Information System: Beijing Global Information System Center

Fudi Wang

National Meteorological Information Center, Beijing, China

CORRESPONDING AUTHOR: Fudi Wang, National Meteorological Information Center, No.46 Zhongguancun Nandajie, Haidian District, Beijing, China, 100081, E-mail: این آدرس ایمیل توسط spambots حفاظت می شود. برای دیدن شما نیاز به جاوا اسکریپت دارید

The Sixteenth World Meteorological Congress (Cg-XVI) designated Beijing as one of the WMO's newest Global Information System Centers (GISC Beijing) in summer 2011. Following a yearlong trial operation that began prior to its formal designation, GISC Beijing became fully operational as of 15 August 2011.

ادامه مطلب: WMO Information System: Beijing Global Information System Center
 

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