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The outlook for precipitation measurements from space
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Atlas, D. Eckerman, J. Meneghini, R. Moore, R. K. |
| Copyright Year | 1981 |
| Description | To provide useful precipitation measurements from space, two requirements must be met: adequate spatial and temporal sampling of the storm and sufficient accuracy in the estimate of precipitation intensity. Although presently no single instrument or method completely satisfies both requirements, the visible/IR, microwave radiometer and radar methods can be used in a complementary manner. Visible/IR instruments provide good temporal sampling and rain area depiction, but recourse must be made to microwave measurements for quantitative rainfall estimates. The inadequacy of microwave radiometer measurements over land suggests, in turn, the use of radar. Several recently developed attenuating-wavelength radar methods are discussed in terms of their accuracy, dynamic range and system implementation. Traditionally, the requirements of high resolution and adequate dynamic range led to fairly costly and complex radar systems. Some simplications and cost reduction can be made; however, by using K-band wavelengths which have the advantages of greater sensitivity at the low rain rates and higher resolution capabilities. Several recently proposed methods of this kind are reviewed in terms of accuracy and system implementation. Finally, an adaptive-pointing multi-sensor instrument is described that would exploit certain advantages of the IR, radiometric and radar methods. |
| File Size | 1152482 |
| Page Count | 26 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19810023203 |
| Archival Resource Key | ark:/13960/t9q28r070 |
| Language | English |
| Publisher Date | 1981-07-01 |
| Access Restriction | Open |
| Subject Keyword | Meteorology And Climatology Microwave Radiometers Rain Satellite-borne Instruments Radar Measuring Instruments Infrared Radiometers Precipitation Meteorology Remote Sensing Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
