 |
| Titel |
Pi-MAX: a new parametrized algorithm to retrieve vertical profiles of trace gases and aerosols from MAX-DOAS measurements |
| VerfasserIn |
Julia Remmers, Steffen Beirle, Steffen Doerner, Thomas Wagner |
| Konferenz |
EGU General Assembly 2013
|
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 15 (2013) |
| Datensatznummer |
250083014
|
|
|
|
|
|
| Zusammenfassung |
| Multi-Axis (MAX-) DOAS instruments observe scattered sunlight under various mostly slant
elevation angles. From such observations information on tropospheric profiles of trace gases
and aerosols can be retrieved. MAX-DOAS observations can be used to quantify emissions
and to study chemical processes in the atmosphere. Measuring (horizontally and vertically)
averaged concentrations the technique can be used as a link between in-situ and
satellite measurements. Thus satellite observations of tropospheric trace gases can be
validated.
Î -MAX (Parametrized Inversion for MAX-DOAS measurements) is a parametrized method
to retrieve vertical profiles of trace gases (such as H2O, NO2, HCHO, CHOCHO)
and aerosols. No online calculations are necessary, since look-up tables (LUT)
calculated with a Monte Carlo based radiative Transport Model are used. In this
manner it is user-friendly, easy to distribute and applicable to every measurement
location.
The here shown measurements took place in the Maldives in March, 2012, during the
CARDEX campaign. Simultaneous sun photometry-, Lidar- and UAV-measurements provide
the possibility to validate the new algorithm. We present time series of profiles of trace gas
concentrations and aerosol extinction We discuss the effects of clouds on the retrieved results. |
|
|
|
|
|
|