First comparison of tropospheric NO2column densities retrieved from GOME measurements and in situ aircraft profile measurements
نویسندگان
چکیده
منابع مشابه
Tropospheric NO2 columns: a comparison between model and retrieved data from GOME measurements
Tropospheric NO2 plays a variety of significant roles in atmospheric chemistry. In the troposphere it is one of the most significant precursors of photochemical ozone (O3) production and nitric acid (HNO3). In this study tropospheric NO2 columns were calculated by the fully coupled chemistry-climate model ECHAM4.L39(DLR)/CHEM. These have been compared with tropospheric NO2 columns, retrieved us...
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Nitrogen dioxide (NO2) vertical tropospheric column densities (VTCs) retrieved from the Global Ozone Monitoring Experiment (GOME) are compared to coincident ground-based tropospheric NO2 columns. The ground-based columns are deduced from in situ measurements at different altitudes in the Alps for 1997 to June 2003, yielding a unique long-term comparison of GOME NO2 VTC data retrieved by a colla...
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Aerosol optical thickness (AOT) values have been retrieved from radiances measured by radiometers and spectrometers such as METEOSAT, AVHRR (Advanced Very High Resolution radiometer), GOES (Geostationary Operational Environmental Satellite) and POLDER (Polarization and Directionality of the Earth’s Reflectance). Early single-band methods are now superseded by bior multi-spectral algorithms that...
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Atmospheric water vapour is the most important greenhouse gas which is responsible for about 2/3 of the natural greenhouse effect, therefore changes in atmospheric water vapour in a changing climate (the water vapour feedback) is subject to intense debate. H2O is also involved in many important reaction cycles of atmospheric chemistry, e.g. in the production of the OH radical. Thus, long time s...
متن کاملComparison of improved Aura Tropospheric Emission Spectrometer CO2 with HIPPO and SGP aircraft profile measurements
Thermal infrared radiances from the Tropospheric Emission Spectrometer (TES) between 10 and 15 μm contain significant carbon dioxide (CO2) information, however the CO2 signal must be separated from radiative interference from temperature, surface and cloud parameters, water, and other trace gases. Validation requires data sources spanning the range of TES CO2 sensitivity, which is approximately...
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ژورنال
عنوان ژورنال: Geophysical Research Letters
سال: 2002
ISSN: 0094-8276
DOI: 10.1029/2002gl015528