|
| << vorige | volgende >> |
Tijdschrift beschrijving
Alle jaargangen van het bijbehorende tijdschrift
Alle afleveringen van het bijbehorende jaargang
Alle artikelen van de bijbehorende aflevering
Details van artikel 2 van 18 gevonden artikelen
| Titel: |
First retrieval of global water vapour column amounts from SCIAMACHY measurements |
| Auteur: |
S. Noël M. Buchwitz J. P. Burrows |
| Verschenen in: |
Atmospheric chemistry and physics |
| Paginering: | Jaargang 4 (2004) nr. 1 pagina's 111-125 |
| Jaar: |
2004 |
| Inhoud: |
Global water vapour column amounts have been derived for the first time from measurements of the SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY (SCIAMACHY) on the European environmental satellite ENVISAT. For this purpose, two different existing retrieval algorithms have been adapted, namely the Air Mass Corrected Differential Absorption Spectroscopy (AMC-DOAS) which was originally designed for GOME and the Weighting Function Modified Differential Absorption Spectroscopy (WFM-DOAS) which was mainly designed for the retrieval of CH<sub>4</sub>, CO<sub>2</sub> and CO from SCIAMACHY near-infrared spectra. Here, both methods have been applied to SCIAMACHY's nadir measurements in the near-visible spectral region around 700 nm.<br> <br> Taking into account a systematic offset of 10%, the results of these two methods agree within a scatter of about ±0.5 g/cm<sup>2</sup> with corresponding SSM/I and ECMWF water vapour data. This deviation includes contributions from the temporal and spatial variability of water vapour. In fact, the mean deviation between the SCIAMACHY and the correlative data sets is much smaller: the SCIAMACHY total water vapour columns are typically about 0.15 g/cm<sup>2</sup> lower than the SSM/I values and less than 0.1 g/cm<sup>2</sup> lower than corresponding ECMWF data. The SCIAMACHY water vapour results agree well with correlative data not only over ocean but also over land, thus showing the capability of SCIAMACHY to derive water vapour concentrations on the global scale. |
| Uitgever: |
Copernicus GmbH (provided by DOAJ) |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 2 van 18 gevonden artikelen
| << vorige | volgende >> |