2002-2003 Science Planning Summary

Oceans & Climate

Dr. Bernhard Lettau
Program Manager

OO-264-O

NSF/OPP NSF/NOAA agreement
Station: Palmer Station
RPSC POC: Rob Edwards
Research Site(s): Palmer Station

Collection of atmospheric air for the NOAA/CMDL worldwide flask sampling network
Dr. Dave Hofmann
National Oceanic and Atmospheric Administration
R/CMDL1
dhofmann@cmdl.noaa.gov
http://www.cmdl.noaa.gov
Dr. Thomas Conway
National Oceanic and Atmospheric Administration

Deploying Team Members: David J Hofmann
Research Objectives: The National Oceanic and Atmospheric Administration (NOAA) has been conducting studies to determine and assess the long-term buildup of trace atmospheric constituents that influence climate change and the ozone layer. Time-series analyses of long-term data provide insight into several phenomena of particular interest. These include:

Seasonal and temporal variations in greenhouse gases,

Stratospheric ozone depletion,

Transantarctic transport and deposition,

The interplay of the trace gases and aerosols with solar and terrestrial radiation fluxes that occur on the polar plateau.

Personnel at Palmer Station will collect air samples to be analyzed for carbon dioxide, methane, carbon monoxide, stable isotopic ratios of carbon dioxide and methane. Flasks will also be collected for analysis of halocarbons, nitrous oxide, and other trace constituents.

These measurements allow researchers to determine the rates at which concentrations of these atmospheric constituents change. They also point to likely sources, sinks, and budgets. This group collaborate with climate modelers and diagnosticians to explore how the rates of change of these parameters affect climate.


Field Season Overview:
No project team members will deploy to Antarctica this field season. The Palmer Station physician will collect one or two air samples per week and log environmental conditions. All samples are returned to the NOAA laboratory on a regular schedule.