Scientific Activities for FY 1998

The Atmospheric Chemistry Division (ACD) has developed its scientific program around a few major foci:
(1) Biosphere-Atmosphere Interactions, (2) Tropospheric Photochemistry and Aerosols, and (3) Middle
Atmosphere Chemistry and Dynamics. Long-term objectives are highlighted in the ACD Strategic Plan. We
present here a summary of the research activities conducted by the different ACD projects during fiscal year
1998. Implementation plans for FY1999 and FY2000 can also be found on the ACD Web page
http://www.acd.ucar.edu.

Director's Message

Significant Accomplishments

Impact of the Biosphere on Atmospheric Composition and Trace Gases

Biosphere-Atmosphere Interactions

Stratospheric/Tropospheric Measurement of Trace Gases

Tropospheric Photochemistry

Odd Hydrogen, Sulfuric Oxidation Products, and Aerosols

Odd Nitrogen

Formaldehyde

Measurement of Pollution in the Troposphere (MOPITT)

Chemistry of the Upper Troposphere and the Stratosphere

Optical Techniques and Stratospheric Chemistry

High Resolution Dynamics Limb Sounder (HIRDLS): Space Observations of Stratospheric and Upper Tropospheric Composition

Data Analysis and Assimilation

Laboratory Kinetics

Oxidation of Biogenic Species

Overtone Spectra

Measurements, Standards and Intercomparison

Modeling

Regional and Process Studies

Global Modeling

Staff, Visitors, and Collaborators

Publications