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| Titel |
Some validation results of orbital and ground based CO and CH4 total content measurements in background and industrial regions |
| VerfasserIn |
Vadim Rakitin, Yury Shtabkin, Nikolai Elansky, Andrey Skorokhod, Alexandr Safronov, Anatoly Dzhola |
| Konferenz |
EGU General Assembly 2015
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250110221
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| Publikation (Nr.) |
 EGU/EGU2015-10198.pdf |
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| Zusammenfassung |
| The results of ground-based spectroscopic measurements of CO and CH4 total
content (TC) in Moscow, Zvenigorod (53 km toward West from the Moscow center),
ZOTTO station (Central Siberia) and Beijing (China) during 2010-2014 years for
conditions of typical and anomalous emission rates are presented and compared
with satellite TC data (the latest versions of MOPITT, AIRS, IASI products). The
empiric coefficients and relationships between data of ground-based and satellite
CO and CH4 total contents (TC) are discussed. The comparison demonstrated a
good agreement (R2 ~ 0.6-0.9) of satellite and ground-based CO TC data in low
pollution conditions and systematic underestimation of satellite CO TC (150-300 %) in
condition of intense surface emissions (events of wild fires in Siberia in 2011-2012
and strong atmospheric pollutions in Beijing). The best correlation (R2 ~ 0.4) for
polluted conditions of Beijing was obtained in summer time-period for averaged AIRS
v.6 CO TC data for 1o*1o grid, but K=Ugrb/Ustl = 2.5, where Ugrb and Ustlare
ground based and satellite diurnal TC values relatively. Under excluding of the days
with low ABL heights (HABL ≈¥1000m selection) the correlation between satellite
and ground based CO TC diurnal data increases (R2 ~ 0.7, K=1.5). Orbital AIRS
CH4 total columns good enough correlate with ground-based data (R2 ~0.4-0.7).
IASI CH4TC diurnal data have no correlation with AIRS and ground-based TC. |
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