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| Titel |
Accurate satellite-derived estimates of the tropospheric ozone impact on the global radiation budget |
| VerfasserIn |
J. Joiner, M. R. Schoeberl, A. P. Vasilkov, L. Oreopoulos, S. Platnick, N. J. Livesey, P. F. Levelt |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 9, no. 13 ; Nr. 9, no. 13 (2009-07-10), S.4447-4465 |
| Datensatznummer |
250007495
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| Publikation (Nr.) |
 copernicus.org/acp-9-4447-2009.pdf |
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| Zusammenfassung |
| Estimates of the radiative forcing due to anthropogenically-produced
tropospheric O3 are derived primarily from models. Here, we
use tropospheric ozone and cloud data from several instruments in the
A-train constellation of satellites as well as information from the
GEOS-5 Data Assimilation System to accurately estimate the radiative
effect of tropospheric O3 for January and July 2005. Since we
cannot distinguish between natural and anthropogenic sources with the
satellite data, our derived radiative effect reflects the unadjusted
(instantaneous) effect of the total tropospheric O3 rather
than the anthropogenic component. We improve upon previous estimates
of tropospheric ozone mixing ratios from a residual approach using the
NASA Earth Observing System (EOS) Aura Ozone Monitoring Instrument
(OMI) and Microwave Limb Sounder (MLS) by incorporating cloud pressure
information from OMI. We focus specifically on the magnitude and
spatial structure of the cloud effect on both the short- and long-wave
radiative budget. The estimates presented here can be used to evaluate
the various aspects of model-generated radiative forcing. For example,
our derived cloud impact is to reduce the radiative effect of
tropospheric ozone by ~16%. This is centered within the
published range of model-produced cloud effect on unadjusted
ozone radiative forcing. |
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