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| Titel |
Technical Note: A new global database of trace gases and aerosols from multiple sources of high vertical resolution measurements |
| VerfasserIn |
B. Hassler, G. E. Bodeker, M. Dameris |
| 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 ; 8, no. 17 ; Nr. 8, no. 17 (2008-09-10), S.5403-5421 |
| Datensatznummer |
250006372
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| Publikation (Nr.) |
 copernicus.org/acp-8-5403-2008.pdf |
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| Zusammenfassung |
A new database of trace gases and aerosols with global coverage, derived from
high vertical resolution profile measurements, has been assembled as a
collection of binary data files; hereafter referred to as the "Binary
DataBase of Profiles" (BDBP). Version 1.0 of the BDBP, described here,
includes measurements from different satellite- (HALOE, POAM II and III,
SAGE I and II) and ground-based measurement systems (ozonesondes). In
addition to the primary product of ozone, secondary measurements of other
trace gases, aerosol extinction, and temperature are included. All data are
subjected to very strict quality control and for every measurement a
percentage error on the measurement is included. To facilitate analyses, each
measurement is added to 3 different instances (3 different grids) of the
database where measurements are indexed by: (1) geographic latitude,
longitude, altitude (in 1 km steps) and time, (2) geographic latitude,
longitude, pressure (at levels ~1 km apart) and time, (3) equivalent
latitude, potential temperature (8 levels from 300 K to 650 K) and time.
In contrast to existing zonal mean databases, by including a wider range of
measurement sources (both satellite and ozonesondes), the BDBP is
sufficiently dense to permit calculation of changes in ozone by latitude,
longitude and altitude. In addition, by including other trace gases such as
water vapour, this database can be used for comprehensive radiative transfer
calculations. By providing the original measurements rather than derived
monthly means, the BDBP is applicable to a wider range of applications than
databases containing only monthly mean data. Monthly mean zonal mean ozone
concentrations calculated from the BDBP are compared with the database of
Randel and Wu, which has been used in many earlier analyses. As opposed to
that database which is generated from regression model fits, the BDBP uses
the original (quality controlled) measurements with no smoothing applied in
any way and as a result displays higher natural variability. |
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