 |
| Titel |
Remote sensing of greenhouse gases using satellites - from SCIAMACHY to GOSAT |
| VerfasserIn |
Christian Frankenberg, Hartmut Bösch, Michael Buchwitz, André Butz, Christopher W. O'Dell, Annmarie Eldering, Otto Hasekamp, Maximilian Reuter, Ilse Aben, Acos Team |
| Konferenz |
EGU General Assembly 2011
|
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 13 (2011) |
| Datensatznummer |
250057225
|
|
|
|
|
|
| Zusammenfassung |
| Satellites observations of greenhouse gases with high accuracy and precision have the
potential to overcome the limitations of in-situ ground-based measurements by enabling
global retrievals of CO2 and CH4 column amounts. The SCIAMACHY instrument onboard
ENVISAT was the first nadir-viewing earth-observing spectrometer recording near-infrared
spectra covering CO2 and CH4 absorption bands with moderate spectral resolution. With the
launch of the Japanese Greenhouse gas Observing SATellite (GOSAT) on 23 January 2009,
the first dedicated greenhouse gas mission is in orbit, recording high-resolution spectra at
750 nm (O2 A-band), 1600 nm (weak CO2 and CH4 bands) and 2000 nm (strong CO2 and
H2O bands).
This presentation will provide a general overview of greenhouse gas retrievals using
SCIAMACHY as well as GOSAT. We will summarize the results and applications of
XCH4 and XCO2 retrievals first obtained from the SCIAMACHY satellite using
single-band retrieval techniques. XCH4 is taken as an example of how remotely sensed
greenhouse gases retrievals are applied in source inversion algorithms on a global
scale.
In the meantime, retrieval algorithms by several research groups have matured
into full-physics techniques, retrieving atmospheric scattering properties alongside
greenhouse gases in a global fit using a combination of multiple spectral regions. A
brief introduction into some of those techniques and their difference to single-band
and ground-based retrievals will be given. These algorithms are now applied to
SCIAMACHY and GOSAT spectra and initial results from different groups will be
presented. |
|
|
|
|
|
|