Remote sensing of water vapor within the solar spectrum
Book
·
OSTI ID:220685
- Univ. Hamburg (Germany). Meteorologisches Inst.
- Max-Planck-Inst. fuer Meteorologie, Hamburg (Germany)
- Freie Univ. Berlin (Germany). Inst. fuer Weltraumwissenschaften
Water vapor is the most important natural atmospheric greenhouse gas, influencing strongly solar and thermal infrared radiative transfer, and giving rise for clouds, which have strong influence on weather and climate. Therefore, much effort is devoted to remote sensing of atmospheric water vapor. The detection over water is well established, while the situation over land surfaces is worse. A new method is developed to derive the total atmospheric water vapor content over land surfaces even for higher aerosol contents with the aid of backscattered solar radiances. Numerous radiative transfer simulations with a matrix operator code of vertically backscattered solar radiance were carried out for different vertically stratified atmospheres. From the evaluation of these theoretical calculations it can be concluded that this technique allows the detection of total atmospheric water vapor content over land surfaces with an error of less than 10%. This result is important with regard to future measurements planned with the MERIS imaging spectrometer on board the European satellite ENVISAT, which will be launched in 1998. In addition to these theoretical calculations also various aircraft measurements of the backscattered radiances in the wavelength range from 600 to 1,650 nm were carried out. These measurements are done with the above mentioned OVID, a new multichannel array spectrometer of the Universities of Hamburg and Berlin. First comparisons of these airborne CCD measurements with calculated spectra are shown.
- OSTI ID:
- 220685
- Report Number(s):
- CONF-9409265--; ISBN 0-8194-1641-X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Aerosol characterization using multispectral MERIS measurements
Recovery of atmospheric water vapor total column abundance from imaging spectrometer data around 940 nm - Sensitivity analysis and application to Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) Data
Residual analysis of surface spectral radiances between instrument observations and line-by-line calculations
Conference
·
Sat Dec 30 23:00:00 EST 1995
·
OSTI ID:220677
Recovery of atmospheric water vapor total column abundance from imaging spectrometer data around 940 nm - Sensitivity analysis and application to Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) Data
Journal Article
·
· Remote Sensing of Environment; (United States)
·
OSTI ID:6340429
Residual analysis of surface spectral radiances between instrument observations and line-by-line calculations
Conference
·
Fri Mar 31 23:00:00 EST 1995
·
OSTI ID:83163