Database for CTM model validation studies
| | Database for CTM model validation studies | |
POLARIS
16 Apr - 15 May 1997
Brief description Photochemistry and Ozone Loss in the Arctic Region In Summer April - September 1997 Fairbanks, Alaska. POLARIS is the latest in a series of high-altitude airborne investigations of atmospheric ozone spanning more than a decade. It extends the STRAT observations to the Arctic region. POLARIS was a series of high-altitude airborne investigations to understand the behavior of polar stratospheric ozone as it changes from very high concentrations in spring down to very low concentrations in autumn. The data help with our understanding on the distribution, chemistry, and physics of stratospheric ozone after the vortex breakup, during the continuous daylight conditions of summer. The scientific objective of the POLARIS campaign is to evaluate the reduction of stratospheric ozone over a range of altitudes and latitudes in the summer season of the Northern Hemisphere. Aircraft measurements of select species within the reactive nitrogen (NOy), halogen (Cly), and hydrogen (HOx) reservoirs; aerosols, and other long-lived species will be made at mid- to high latitudes in spring and summer in the lower stratosphere. These measurements will allow the effectiveness of the respective catalytic loss cycles of ozone to be calculated directly for sampled air parcels. These results along with computer models of the atmosphere, meteorological data, and satellite and balloon observations will be used to evaluate summer ozone changes due to chemistry and transport at high latitudes. Special remarks concerning EThmeg database content ER-2 data were downloaded from FTP-server at http://www.espo.nasa.gov.
The ER-2 flight table contains information on what measurment was available on what flight.
Overview of measurement techniques and uncertainties
References
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