'Ozone loss' diaporamas de présentation

Global Climate Change Pollution

1.7k views • 136 slides

Human Impact on the Biosphere

Human Impact on the Biosphere. Human Impacts. Humans are using energy and altering the environment at astonishing rates We are altering natural processes before we even understand them. Developing vs. Developed.

1.8k views • 109 slides

Ozone Hole

Ozone Hole. History of the Ozone Discovery. Dramatic loss of ozone in the lower stratosphere over Antarctica was first noticed in the 1970s by a research group from the British Antarctic Survey (BAS) who were monitoring the atmosphere above Antarctica. What is the ozone hole?.

1.08k views • 66 slides

The Atmosphere and Atmospheric Ozone

725 views • 62 slides

A SPARC Success Story: The Role of Halogen Chemistry in Polar Stratospheric Ozone Depletion

A SPARC Success Story: The Role of Halogen Chemistry in Polar Stratospheric Ozone Depletion An Update on the Initiative Sponsored by the Stratospheric Processes and their Role in Climate (SPARC) Project of the World Climate Research Programme Initiative Co-Chairs:

506 views • 38 slides

Halogen Chemistry in the troposphere EAS 6410 Xiaolu Zhang, Bo Yao, Jin Liao

Halogen Chemistry in the troposphere EAS 6410 Xiaolu Zhang, Bo Yao, Jin Liao. CFCs. Cl, ClO. Ozone depletion. (Molina and Rowland , 1974). Introduction. Halogens: very reactive radicals . Play an important role in stratosphere chemistry. Why important. Tropospheric Halogens.

677 views • 35 slides

SAGE III Ozone Loss and Validation Experiment (SOLVE): Preliminary Results

SAGE III Ozone Loss and Validation Experiment (SOLVE): Preliminary Results. Mark R. Schoeberl NASA/GSFC. Main Players. NASA HQ - UARP Platforms ER-2 - P. Newman, J. Anderson DC-8 - B. Toon, M. Schoeberl Balloon - B. Brune Ground based instruments (e.g. IRF) International - Theseo-2000

463 views • 35 slides

SAGE III Ozone Loss and Validation Experiment (SOLVE): Preliminary Results

SAGE III Ozone Loss and Validation Experiment (SOLVE): Preliminary Results. Phil DeCola NASA/HQ. Main Players. NASA HQ - UARP Platforms ER-2 - P. Newman, J. Anderson DC-8 - B. Toon, M. Schoeberl Balloon - B. Brune Ground based instruments (e.g. IRF) International - Theseo-2000

424 views • 34 slides

Chlorofluorocarbons

Chlorofluorocarbons. Products. Fredric Swarts. Early 1890s Belgian chemist Pioneer in synthesis of fluorinated alkanes Generated effective fluorine exchange agent. http://www.chemcases.com/fluoro/fluoro05.htm. Thomas Midgley Jr. 1930s

780 views • 29 slides

What is the NDACC?

424 views • 29 slides

Atmospheric Chemistry with Large and Small UAS in the Arctic

Atmospheric Chemistry with Large and Small UAS in the Arctic. James W. Elkins NOAA Earth Systems Research Laboratory Global Monitoring Division The NOAA-Environment Canada UAS Arctic Scoping Workshop September 25, 2012. Outline of Talk. Motivation and Introduction

436 views • 28 slides

WACCM Meeting Notes 23 October 2006, NCAR Foothills Lab In attendance:

WACCM Meeting Notes 23 October 2006, NCAR Foothills Lab In attendance: Richmond (HAO), Marsh (ACD), Sassi (CGD), Tilmes (ASP/ACD), Kinnison (ACD), Liu (HAO), Wang (HAO), Fischer (CGD), Gettelman (ACD/CGD), Richter (CGD), Matthes (ACD), Hagen (HAO), Garcia (ACD). Matthes:

359 views • 25 slides

Impact of geoengineering aerosols on stratospheric temperature and ozone

Impact of geoengineering aerosols on stratospheric temperature and ozone Tom Peter, ETH Zurich, Switzerland.

325 views • 21 slides

Institute for Climate and Atmospheric Science SCHOOL OF EARTH AND ENVIRONMENT

Institute for Climate and Atmospheric Science SCHOOL OF EARTH AND ENVIRONMENT. 3D SLIMCAT Studies of Arctic Ozone Loss. Wuhu Feng. Acknowledgments: Martyn Chipperfield, Stewart Davies, L. Gunn, V.L. Harvey, C.E. Randall, M.L. Santee, P.Ricaud, QUOBI and SCOUT-O3. OUTLINE. 3D CTM SLIMCAT

302 views • 19 slides

UV-B Radiation, Poplar Phytochemistry & Herbivory

UV-B Radiation, Poplar Phytochemistry & Herbivory. Jeffrey M. Warren John H. Bassman Washington State University EPA STAR Graduate Fellowship Program. Ultraviolet Radiation. Ozone Loss UV-B Radiation Increase Chromophores Phenolics, proteins, DNA Effects Direct versus indirect.

329 views • 15 slides

Also John Farrara and Carol Hsu, UCLA

Modulation of the southern polar vortex and tropospheric variability by forcing in the tropical stratosphere ( contrast with Northern Hemisphere ). David Noone* , Yuk Yung, and Run-Lie Shia Division of Geological and Planetary Sciences California Institute of Technology, Pasadena, California.

372 views • 14 slides

Also John Farrara and Carol Hsu, UCLA

Modulation of the southern polar vortex and tropospheric variability by forcing in the tropical stratosphere ( contrast with Northern Hemisphere ). David Noone* , Yuk Yung, and Run-Lie Shia Division of Geological and Planetary Sciences California Institute of Technology, Pasadena, California.

203 views • 14 slides

The impact of volcanic aerosols on stratospheric chemistry with implications for geoengineering

The impact of volcanic aerosols on stratospheric chemistry with implications for geoengineering. Simone Tilmes (tilmes@ucar.edu) WACCM team, Doug Kinnison, Rolando Garcia, Anne Smith, Ryan Neely, Andrew Conley, Jean-Francois Lamarque

271 views • 13 slides

Findings since the 2006 Assessment

Findings since the 2006 Assessment. SAP co-chairs 7th Meeting of the Ozone Research Managers Geneva, Switzerland May 19, 2008. Outline. ClOOCl J-rate revision (Pope et al.) EESC & adjustments to CFC lifetimes Acceleration of the vertical lifting in the tropics.

202 views • 10 slides

3D CTM Study of Arctic Ozone Loss and Denitrification Effect

3D CTM Study of Arctic Ozone Loss and Denitrification Effect Wuhu Feng 1 , Martyn Chipperfield 1 , Stewart Davies 1 , V.L. Harvey 2 , C.E. Randall 2 1. School of Earth and Environment, University of Leeds, U.K 2. LASP, University of Colorado, Boulder, USA fengwh@env.leeds.ac.uk.

124 views • 1 slides