Back to Search
Start Over
Sampling error of daily mean surface wind speed and air specific humidity due to Sun-synchronous satellite sampling and its reduction by multi-satellite sampling.
- Source :
-
International Journal of Remote Sensing . 6/20/2011, Vol. 32 Issue 12, p3389-3404. 16p. 4 Charts, 8 Graphs, 1 Map. - Publication Year :
- 2011
-
Abstract
- To quantify the sampling error of wind speed (W) and the surface air specific humidity (Qa) resulting from Sun-synchronous polar-orbit satellite sampling and the effect of single- and multi-satellite sampling, we compared satellite-simulated data with true daily mean data using buoy data. True daily mean data were obtained by averaging buoy data at all available times over 24 h, while satellite-simulated data were the averages of buoy data sampled at satellite passing times (once or twice each day). The difference between true and satellite-simulated data was defined as the sampling error. The sampling error of the daily mean data of W and Qa depends considerably on the satellite observation time and location. Although the sampling error is fairly reduced if multi-satellite sampling is employed, a noticeable sampling error remains in some cases if a wrong sampling combination is employed. Therefore, multi-satellite data should be carefully used to obtain more accurate global data. [ABSTRACT FROM AUTHOR]
- Subjects :
- *WIND speed
*HUMIDITY
*ERRORS
*PROJECT POSSUM
*HEAT flux
Subjects
Details
- Language :
- English
- ISSN :
- 01431161
- Volume :
- 32
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- International Journal of Remote Sensing
- Publication Type :
- Academic Journal
- Accession number :
- 62596972
- Full Text :
- https://doi.org/10.1080/01431161003749428