ausblenden:
Schlagwörter:
atmosphere; atmospheric boundary layer; boundary layer; microwave imagery; ocean; SMM/I; SSM/I; water vapour, Atmospheric humidity; Meteorology; Microwave devices; Oceanography; Polarization; Polynomials; Radiometers; Radiosondes; Satellites; Transfer functions; Vapors, Atmospheric boundary layers; Microwave sensor; Near surface specific humidity; Polarization measurements; Radiative transfer calculations; Radiosonde measurement; Satellite soundings; Sea surface; Special sensor microwave imager; Water vapour, Remote sensing
Zusammenfassung:
The microwave sensor SSM/I (Special Sensor Microwave/Imager) on board of the DMSP satellite can be used to develop a retrieval method for the water vapour content in the atmospheric boundary layer close to the sea surface, by means of radiative transfer calculations. It is found that the SSM/I measurements are sufficiently sensitive to the water vapour w1in the lowermost 500 m of the atmosphere to allow a retrieval of w1from the 19, 22, 37 GHz vertical and 19 GHz horizontal polarization measurements with an accuracy of 0-06gcm“J. The technique is validated with globally distributed radiosonde measurements located together with satellite soundings during the months July and August 1987. A linear relationship is established statistically to determine the near-surface specific humidity from w, with an accuracy of 1.2gKg−1. © 1993 Taylor amp; Francis Ltd.
