Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.11765/6565
Optimal estimation of tropospheric H2O and δD with IASI/METOP [Discussion paper]
Title: Optimal estimation of tropospheric H2O and δD with IASI/METOP [Discussion paper]
Authors: Schneider, Matthias RESEARCHERID Hase, Frank
Keywords: Tropospheric H2O; Infrared Atmospheric Sounding Interferometer; Water isotopologues; Troposfera; Isotopólogos; Ciclo del agua
Issue Date: 2011
Publisher: European Geosciences Union
Citation: Atmospheric Chemistry and Physics Discussions. 2011, 11, p. 16107–16146
Publisher version: http://dx.doi.org/10.5194/acpd-11-16107-2011
Abstract: We present optimal estimates of tropospheric H2O and δD derived from radiances measured by the instrument IASI (Infrared Atmospheric Sounding Interferometer) flown on EUMETSAT's polar orbiter METOP. We document that the IASI spectra allow for retrieving H2O profiles between the surface and the upper troposphere as well as middle tropospheric δD values. A theoretical error estimation suggests a precision for H2O of better than 35% in the lower troposphere and of better than 15% in the middle and upper troposphere, respectively, whereby surface emissivity and atmospheric temperature uncertainties are the leading error sources. For the middle tropospheric δD values we estimate a precision of 15–20‰ with the measurement noise being the dominating error source. The accuracy of the IASI products is estimated to about 20–10% and 10‰ for lower to upper tropospheric H2O and middle tropospheric δD, respectively. It is limited by systematic uncertainties in the applied spectroscopic parameters and the a priori atmospheric temperature profiles. We compare our IASI products to a large number of near coincident radiosonde in-situ and ground-based FTS (Fourier Transform Spectrometer) remote sensing measurements. The bias and the scatter between the different H2O and δD data sets are consistent with the combined theoretical uncertainties of the involved measurement techniques.
Sponsorship : This study has been conducted in the framework of the project MUSICA which is funded by the European Research Council under the European Community’s Seventh Framework Programme (FP7/2007-2013) / ERC Grant agreement number 256961.
URI: http://hdl.handle.net/20.500.11765/6565
ISSN: 1680-7367
1680-7375
Appears in Collections:Artículos científicos 2010-2014


Files in This Item:
  File Description SizeFormat 
acpd-11-16107-2011.pdf
1,8 MBAdobe PDFThumbnail
View/Open
Show full item record



Items in Arcimís are protected by Creative Commons License, unless otherwise indicated.

Arcimís Repository
Nota Legal Contacto y sugerencias