61. Geoff Blake / Caltech / Atmospheric Chemistry Research Page atmospheric chemistry BIOGEOCHEMICAL CYCLES GA Blake Group Divisions of Geological Planetary Sciences, Chemistry Chemical Engineering http://www.gps.caltech.edu/~gab/atmospheric/atmospheric.html

ATMOSPHERIC CHEMISTRY G.A. Blake Group California Institute of Technology Overview For example, stable isotopes have long served as an invaluable tool in geochemical studies of the solid and liquid reservoirs of the earth. As outlined more fully below, stable isotopes also have the potential to provide critical new insights into a variety of issues in atmospheric science, yet have been only rarely pursued. In part this arises because the measurements are difficult, requiring precisions and accuracies in the part per ten thousand range, but also because the science that can be pursued with stable isotopic studies of atmospheric trace gases is only now becoming clear. We have begun a new laboratory program that utilizes stable isotopes to examine the fate of important biogenic trace gases such as nitrous oxide, and are developing new in situ measurement approaches for such species using infrared laser induced fluorescence. With Paul Wennberg's group we are also beginning a new effort in Br/BrO detection in the vacuum ultraviolet, as described below. Stables Isotopes and Nitrous Oxide Photolysis Nitrous oxide exists in the Earth's atmosphere at a current concentration of approximately 310 ppbv and is increasing at an annual rate of about 0.25-0.31%. Despite being present in only trace amounts, nitrous oxide exerts a large influence on the terrestrial climate in two major ways: (1) It is one of the main greenhouse gases because of its long atmospheric lifetime (~100-150 years) and its large radiative forcing capabilities (nearly 200 times that of carbon dioxide), and (2) It is the principal source of NO

62. Gases And Atmospheric Chemistry Gases atmospheric chemistry Concept Development Demos Tips Labs/Activities. Concept Development. Introduction to Gases Scuba, Cartesion Diver http://educ.queensu.ca/~science/main/concept/chem/c06/c06main.htm

Chemistry Concept Development Demos Tips Labs/Activities Concept Development Introduction to Gases - Scuba, Cartesion Diver Gas Unit explaining Bolye's, Charles, and Gay Lussac's Laws Gas Pressure Visual Aid Bike Tires and the Gas Laws ... Factor Method for Problem Solving Demos The Can Crush - Volume and Pressure Demo Pressure Demo - candle, water and penny Blowing up the Teacher - air pressure Plop Plop, FIzz FIzz, BOOM - Gas Properties ... Bell Jar Demo Tips Ideal Gas Law Mnemonic Boyle or Not to Boil - Remember Differenc Between Boyle and Charles Exploratory Learning The Mole Cube ... Students as Molecules - Boyle's Law Labs/Activities Boyle's Law - Syringe Lab Does a Gas Expand or Contract When Heated - Charles' Law Gas Presentation Activity Molar Volume Experiment ... Back to Main Science Concept Page

63. MIT CGCS Research: Atmospheric Chemistry Focus on Upper atmospheric chemistry and Circulation. Theoretical studies of the greenhouse effect indicate that a rise in the level of the greenhouse gases http://web.mit.edu/cgcs/www/atmchem.html

MIT Center for Global Change Science > home Focus Areas Affiliates directory education ... outreach Focus on Upper Atmospheric Chemistry and Circulation Theoretical studies of the greenhouse effect indicate that a rise in the level of the greenhouse gases will tend not only to warm the Earth's surface and the lower atmosphere but also to cool the stratosphere. This cooling of the stratosphere is expected to affect the ozone layer by decreasing ozone destruction in equatorial regions and increasing ozone destruction in polar regions. These effects would be added to the increased ozone destruction expected due to rising chlorofluorocarbon concentrations. The stratospheric cooling by the greenhouse gases combined with these ozone layer changes will in turn affect the circulation at this level and conceivably at lower levels also. Indeed, there is already some evidence that Antarctic ozone changes have been influencing the Southern Hemisphere springtime climate by delaying the final warming. CGCS researchers are extensively involved in laboratory and theoretical studies to address two general interrelated goals: to understand quantitatively the elementary chemical steps at the molecular level that enable reliable extrapolations to atmospheric conditions; and to understand the interrelationship between chemical and atmospheric processes in order to elucidate the relevant chemical reactions that affect the atmosphere on regional and global scales. Following are two areas of interest to CGCS researchers.

64. Atmospheric Chemistry Program Research into regional and continental chemistry and the fate of tropospheric air pollutants, extracontinental and global chemistry and the fate of tropospheric air pollutants, and aerosol genesis. http://gonzalo.er.anl.gov/ACP/

Security and Privacy Notice PLEASE NOTE: Much of the science that had been planned for the Atmospheric Chemistry Program (ACP) will, in the future, be conducted under the Department of Energy's Atmospheric Science Program http://www.asp.bnl.gov . Beginning in Fiscal Year 2005, research will focus on radiative forcing of climate change by atmospheric aerosols. Please refer to the ASP web site for more information. The Atmospheric Chemistry Program (ACP) is a Global Change Research program sponsored by the Environmental Sciences Division of the U.S. Department of Energy (DOE) The overall objective of the ACP is to provide DOE with advanced information on the atmospheric environment that is required for long-range energy planning. The research is carried out primarily at four DOE laboratories and approximately twelve universities and non-DOE labs. The thrusts of this research are on regional and continental chemistry and fate of tropospheric air pollutants, extracontinental and global chemistry and fate of tropospheric air pollutants, and aerosol genesis. Laboratory studies emphasize rate and equilibrium processes. Field studies are conducted with aircraft and surface measurements on reaction chemistry, advective influences on the chemical composition of chemistry, and air-surface exchange processes. Modeling efforts address both chemistry and dynamics on regional and global scales. ACP Projects 2001 and 2002 The G-1 Research Aircraft The DOE Research Aircraft Facility What it Takes to Carry Out a Field Campaign (PDF)

65. MIT Integrated Framework: Climate An atmospheric chemistry model and the 2DLO climate model are coupled to run To calculate atmospheric composition, the model of atmospheric chemistry http://web.mit.edu/globalchange/www/climate.html

Home Publications Personnel Models ... SEARCH The MIT Integrated Global System Model: Climate Component Climate Model Components: Atmospheric Dynamics Ocean Dynamics Atmospheric Chemistry Other IGSM Components Anthropogenic Emissions and Ecosystems and Natural Fluxes To represent the dynamics of climate within the MIT Framework , an initial task was to develop a computationally efficient model capable not only of simulating reasonably well the present climate but also of reproducing the climate change patterns predicted with 3D GCMs. The current MIT climate model couples a two-dimensional (2D) land- and ocean-resolving (LO) statistical-dynamical model of the atmosphere to a 3D ocean general circulation model (GCM). An atmospheric chemistry model and the 2D-LO climate model are coupled to run interactively and simultaneously, to provide predictions of the atmospheric concentration of radiatively and chemically important trace species. Details of the individual model components are provided in several publications The coupled climate and chemistry model depicted in the schematic is two-dimensional (latitude-altitude) with separate predictions over land and ocean at each latitude. Longitudinal variations are obtained from a combination of observed climate data and selected transient runs of three-dimensional climate models. The MIT climate model, with its 2D atmosphere/3D ocean, is capable of reproducing many characteristics of the current longitudinally-averaged climate, and its behavior and predictions are similar to those of more complex, fully 3D GCMs. Most significantly, it is twenty times faster than 3D models with similar latitudinal and vertical resolutions. Utilizing the simplified (2D atmosphere/3D ocean) climate model structure has allowed the Program to perform multiple model runs which provides a facile investigation of feedbacks between model components. The simplified climate component enables extensive testing of these phenomena, which would not be practical in a calculation incorporating a 3D chemistry/climate model. A 100-year integration of the latest version of the climate model requires 10 hours on a single 500 MHz CPU.

66. Atmospheric Chemistry Technical Area Much of the work in atmospheric chemistry at the Pacific Northwest National Laboratory The US Department of Energy s atmospheric chemistry Program is a http://www.pnl.gov/atmos_sciences/as_acp.html

Atmospheric Chemistry Technical Area Motivation Atmospheric chemistry influences human health, climate, food production and, through its impact on visibility, our view of the world. Chemicals in the air affect us with each breath we take. Suspended particulates that form from gas-phase reactions affect the amount of solar energy reaching the earth's surface. Not only government, but private industry, has a vested interest in improving our knowledge of these processes. Much of the work in atmospheric chemistry at the Pacific Northwest National Laboratory has focused on the fate of energy-related pollutants (e.g., ozone, nitrogen oxides, sulfur) in the lower part of the atmosphere, beginning with their emission into the atmosphere and continuing to their deposition at the Earth's surface. Examples of past work include studies of radionuclide deposition, the long-range transport of sulfur plumes, mechanisms by which sulfate aerosol enters precipitation, homogeneous nucleation mechanisms for the formation of natural aerosols, and the production of ozone from NO x and hydrocarbons. Almost all of our work has involved a combination of field studies using state-of-the-art airborne instrumentation and computer modeling.

67. FSD: Atmospheric Science & Global Change: Research Capabilities atmospheric chemistry influences human health, climate, food production and, Much of the work in atmospheric chemistry at the Pacific Northwest National http://www.pnl.gov/atmospheric/research/chemistry.stm

Biological Sciences Chemical Sciences fsd home core values search: Research Capabilities Regional Climate Modeling Climate Physics Atmospheric Chemistry ... Relevant Links Atmospheric Chemistry Design and conduct field research projects to understand basic processes affecting the chemistry of atmospheric trace gases and aerosols. Design and improve advanced instruments for field and laboratory deployment. Develop and use coupled meteorology/chemistry models for understanding the processes that affect atmospheric composition. Atmospheric chemistry influences human health, climate, food production and, through its impact on visibility, our view of the world. Chemicals in the air affect us with each breath we take. Suspended particulates that are both directly emitted into the atmosphere or form from chemical reactions in it affect the amount of solar energy reaching the earth's surface. Not only government, but private industry, has a vested interest in improving our knowledge of these processes and how to predict them. Much of the work in atmospheric chemistry at the Pacific Northwest National Laboratory has focused on the fate of energy-related pollutants, e.g., ozone, nitrogen oxides, sulfur, in the lower part of the atmosphere, beginning with their emission into the atmosphere and continuing to their deposition at the Earth's surface. Examples of past work include studies of radionuclide dispersion and deposition, the long-range transport of sulfur oxides, mechanisms governing the formation of "acid rain", nucleation of atmospheric aerosols, and the production of ozone from NOx and hydrocarbons. Almost all of these studies have involved a combination of field studies, laboratory experiments, and computer modeling.

68. Atmospheric Chemistry Research activities include cloud physics and chemistry, aerosol chemistry and physics, wet and occult deposition, and urban pollution. http://www.isao.bo.cnr.it/~chimatmo/atm_chem/

Last modified: June 2002

69. Chemistry@SUNY-ESF: Faculty Profile Dr. Dibble Laser spectroscopy and computational chemistry for investigations of atmospheric chemistry site by Ted Dibble. http://web.syr.edu/~tsdibble/dibble.html

Dibble Group Web Page Physical and Atmospheric Chemistry SUNY College of Environmental Science and Forestry Dr. Dibble's Official Web Page Research People Current Projects ... Links to other Sites Research The Dibble group uses lasers and high-end computers as tools to address questions such as: what are the degradation pathways of organic compounds in the polluted atmosphere? To what extent do particular compounds contribute to the formation of ozone, other air toxics, and particulates? (Answers to these questions are missing for most of the key compounds larger than butane!) The experimental work in Dr. Dibble's laboratory employs pulsed, tunable dye lasers to probe for stable and transient species. Both reaction kinetics and the spectroscopy of new species can be studied using two highly sensitive techniques: laser-induced fluorescence (LIF) and (soon) cavity ringdown spectroscopy . The computational work uses commercially available quantum chemistry programs to carry out ab initio and density functional calculations. These methods are used to map out thermochemical kinetics and to explore and interpret the spectroscopy of as-yet uncharacterized species. See the article about our computational work in Access , the magazine of the National Compuational Science Alliance.

70. 2005 GRC On Atmospheric Chemistry atmospheric chemistry Meets Public Policy Design of PM2.5 Control Strategies for The Chemistry of GasPhase Organic Carbon in a Polluted Atmosphere http://www.grc.uri.edu/programs/2005/atmchem.htm

Atmospheric Chemistry September 4-9, 2005 Big Sky Resort Big Sky, MT Chair: David W Fahey Vice Chair: Douglas R Worsnop SUNDAY 4:00 pm - 9:00 pm Arrival and Check-in 6:00 pm Dinner 7:30 pm - 9:30 pm KEY PERSPECTIVES 7:30 pm - 7:50 pm David Fahey , Chair (NOAA Aeronomy Laboratory) Welcome and Meeting Logistics 7:50 pm - 8:00 pm Discussion Leader: Ken Demerjian (State University of New York-Albany) 8:00 pm - 8:45 pm Susan Solomon (NOAA Aeronomy Laboratory) "Chemistry and Scientific Assessment: Some Reflections on Where We Have Been, Where We Are and Where We May Be Going" 8:45 pm - 9:30 pm Spyros Pandis (Carnegie Mellon University) "Atmospheric Chemistry Meets Public Policy: Design of PM2.5 Control Strategies for an Urban Area" MONDAY 7:30 am - 8:30 am Breakfast 8:30 am Photo 9:00 am - 12:30 pm MEASURING AND MODELING AEROSOLS AND THEIR IMPACT ON CLIMATE 9:00 am - 9:10 am Discussion Leader: Kimberley Prather (University of California-San Diego) 9:10 am - 9:55 am Jose-Luis Jimenez (University of Colorado-Boulder) "Field Studies of Size-Resolved Particle Composition" 9:55 am - 10:40 am Barbara Turpin (Rutgers University) "Secondary Organic Aerosol Formation through Cloud Processing" 10:40 am - 11:00 am Coffee Break 11:00 am - 11:45 am Yinon Rudich (Weizmann Institute of Science) "Laboratory and Field Studies on Aerosol Aging Processes" 11:45 am - 12:30 pm Joyce Penner (University of Michigan) "Aerosols and Climate: How Well Can We Quantify the Effect of Aerosols?"

71. Dr. Hanwant B. Singh Information about atmospheric chemistry research and the journal Atmospheric Environment. http://geo.arc.nasa.gov/sgg/singh/

HOME Research Goals and Collaborations Publications Field Missions INTEX-NA Summer 2004 Intensive ... IPY/POLARCAT White Paper Atmospheric Environment Scope Submissions Special Issues Manuscript Status ... Links Dr. Hanwant B. Singh Atmospheric Environment and a 2005 Fellow of the World Innovative Foundation. Contact information: Dr. Hanwant B. Singh NASA Ames Research Center MS 245-5 Moffett Field, CA 94035, USA Phone: (650) 604-6769 Fax: (650) 604-3625 E-mail: Hanwant.B.Singh@nasa.gov editor@AEnorthamerica.com NASA NASA Ames Research Center ... NASA Ames Earth Science Division maintained by Erin Czech, eczech@mail.arc.nasa.gov last updated: 7/28/05

72. 2001 GRC On ATMOSPHERIC CHEMISTRY atmospheric chemistry. SALVE REGINA UNIVERSITY NEWPORT, RI JUNE 1722, 2001. Stanley P. Sander, Chair Barbara J. Finlayson-Pitts, Vice-Chair http://www.grc.uri.edu/programs/2001/atmochem.htm

ATMOSPHERIC CHEMISTRY SALVE REGINA UNIVERSITY NEWPORT, RI JUNE 17-22, 2001 Stanley P. Sander , Chair Barbara J. Finlayson-Pitts , Vice-Chair Visit the Conference Home Page for more information. Financial support from the following organizations and agencies is gratefully acknowledged: Gordon Research Conferences Institute for Global Change Research Jet Propulsion Laboratory, California Institute of Technology National Aeronautics and Space Administration National Oceanic and Atmospheric Adminstration National Science Foundation U. S. Department of Energy SUNDAY, JUNE 17 2:00-11:00 p. m. 6:00 p.m. Dinner Welcome Satellite Measurements of the Troposphere 7:30 p. m. Introduction by Discussion Leader A. Thompson R. Kahn Assessing the Strengths and Limitation of New Space-borne Aerosol Measurement Techniques Discussion J. Drummond Measurements of Tropospheric Composition: Current Capabilities and Future Hopes Discussion Reception MONDAY, JUNE 18 7:30-8:30 a. m. Breakfast Tropospheric Aerosols 8:45 a. m. Introduction by Discussion Leader C. O'Dowd

73. Welcome To The Atmospheric Sciences Division Atmospheric Sciences Division of Brookhaven National Laboratory, USA. 30 scientists working mainly in atmospheric chemistry, the site provides links to personnel, publications, and research activities. http://www.ecd.bnl.gov

Marine Stratus Experiment (MASE) About the ASD ASD In The News ASD Personnel ... Lunar Eclipse - 11/08/03 This site designed and maintained by: J. G. Williams Last Site Revision: 08/18/05

74. Atmospheric Chemistry Research Group Isotopes in the atmosphere Atmospheric Radiationi IR UV Atmospheric Radiationi IR UV Clean AIr Cape Grim UoW Home page Dept. of Chemistry http://www.uow.edu.au/science/research/acrg/

News Cape Grim Working Group at Wollongong July 2004 For Comments and suggestions please contact: Dr. Stephen Wilson Revised Date: July 23, 2004 Standard conditions apply

75. Climate Change 2001: The Scientific Basis 4.5.2 Impacts of Physical Climate Change on atmospheric chemistry 4.6 Overall Impact of Global atmospheric chemistry Change References http://www.grida.no/climate/ipcc_tar/wg1/127.htm

Climate Change 2001: Working Group I: The Scientific Basis Get Javascript Other reports in this collection 4. Atmospheric Chemistry and Greenhouse Gases Contents Executive Summary 4.1 Introduction 4.1.1 Sources of Greenhouse Gases 4.1.2 Atmospheric Chemistry and Feedbacks ... References Co-ordinating Lead Authors D. Ehhalt, M. Prather Lead Authors F. Dentener, R. Derwent, E. Dlugokencky, E. Holland, I. Isaksen, J. Katima, V. Kirchhoff, P. Matson, P. Midgley, M. Wang Contributing Authors Review Editors F. Joos, M. McFarlan Table of contents Other reports in this collection

76. Jürgen Lobert's World Of Science & Arts A site for atmospheric chemistry and earth science. J.M. Lobert's projects, publications, data and personal information and links for further studies. http://www.jurgenlobert.net/

//Top Nav Bar I v2.1- By Constantin Kuznetsov Jr. (script@esolutiononline.com) //Modified by Dynamic Drive for NS6/Opera6 compatibility and code streamlining March 4th, 2002 //Visit http://www.dynamicdrive.com for this script var keepstatic=1 //specify whether menu should stay static (works only in IE4+) var menucolor="#000000" //specify menu color var submenuwidth=110 //specify sub menus' color Jürgen M. Lobert - Online Home Search WWW Search JurgenLobert.net Projects Personal Pages Art Studio Site Map Comments and questions about this web page to:

77. Committee On Atmospheric Chemistry; (COMPLETED) Project Title Committee on atmospheric chemistry; (COMPLETED) Date Posted Posted 06/22/99 Project Identification Number BASC-U-99-03-A Major Unit http://www4.nas.edu/cp.nsf/0/3456dc3afb95343285256799000b0fd1?OpenDocument

78. Chem541 Atmospheric Chemistry atmospheric chemistry in a changing world an integration and synthesis of a atmospheric chemistry and physics from air pollution to climate change http://teaching.ust.hk/~chem541/

Chem541 Atmospheric Chemistry Course Description TEXTBOOK GRADING COURSE OUTLINE ... LECTURE NOTES Atmospheric composition Chemical kinetics Stratospheric O3 Oxidizing power of the troposphere Ozone air pollution Acid rain Greenhouse effect Aerosols Simple models Geochemical cycles Homework Assignments Fall 2005, Tuesday 18:30-21:20, Rm1504 Instructors: Dr. Jianzhen YU Rm 4528, Tel: 2358-7389, chjianyu@ust.hk Office hour: walk-in or by appointment. Dr. Song GAO Rm 4535, Tel: 2358-7246, chsgao@ust.hk Course Description A fundamental introduction to the physical and chemical processes determining the composition of the atmosphere and its implications for climate, ecosystems, and human welfare. Nitrogen, oxygen, carbon, sulfur geochemical cycles. Climate and the greenhouse effect. Stratospheric ozone. Oxidizing power of the atmosphere. Regional air pollution: aerosols, smog, and acid rain. Textbook “Introduction to Atmospheric Chemistry”, Daniel J. Jacob, Princeton University Press, 1999. 70% of course materials are derived from this textbook and some homework assignments are from this book. The other 30% will be provided to you as handouts or selected sections in the reference books.

79. US NSF - Directorate For Geosciences (GEO) Parisa Ariya Research Group HomepageThe Ariya atmospheric chemistry Research Group B.Sc. (York University, 1992); Ph.D. (Centre for atmospheric chemistry, York University, 1996) http://www.geo.nsf.gov/cgi-bin/geo/showprog.pl?id=11&div=atm

80. Atmospheric Chemistry Calculators And Links Spreadsheets and Related Links for atmospheric chemistry. Theodore S. Dibble atmospheric chemistry Links of Interest to the Dibble Group http://www.esf.edu/chemistry/dibble/AtmosChemCalc.htm

Spreadsheets and Related Links for Atmospheric Chemistry Theodore S. Dibble tsdibble[at]syr.edu Calculators by T. S. Dibble Rate Constants for Termolecular Reactions - This Excel spreadsheet is designed to take input from the Jet Propulsion Laboratory Data Evaluation (see link below) and compute effective second order rate constants for pressure-dependent reactions. The spreadsheet has notes which explain how to use the data from the JPL Data Evaluation. (JPL Data Evaluation #14) - See pages 2.1 through 2.3 (pp. 134-136 of the pdf file) of this document for instructions, and pages 2.4 -2.7 for input parameters. Calculating Solar Zenith Angle - Excel file fof calculating Solar Zenith Angle (SZA) . Requires input of date, Greenich Mean Time, latitude, and longitude. Latitude and Longitude can be determined via these links for world cities and for US cities or zip codes Calculating Photolysis Rates - Excel file for ground-level calculations at various solar zenith angles. Input data may be obtained from Section 4 (pp 162-272 of the pdf file) of the JPL Data Evaluation.

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