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Journal Article

Water vapour in the atmospheric boundary layer over oceans from SSM/I measurements

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Schulz, J., Schluessel, P., & Graßl, H. (1993). Water vapour in the atmospheric boundary layer over oceans from SSM/I measurements. International Journal of Remote Sensing, 14, 2773-2789. doi:10.1080/01431169308904308.

Cite as: https://hdl.handle.net/21.11116/0000-000A-25EC-3
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.