| contributor author | Christopher A. Scott | |
| contributor author | Wim G. M. Bastiaanssen | |
| contributor author | Mobin-ud-Din Ahmad | |
| date accessioned | 2017-05-08T20:49:22Z | |
| date available | 2017-05-08T20:49:22Z | |
| date copyright | October 2003 | |
| date issued | 2003 | |
| identifier other | %28asce%290733-9437%282003%29129%3A5%28326%29.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/28204 | |
| description abstract | Field-based soil moisture measurements are cumbersome. Remote sensing techniques based on active or passive microwave data have limitations. This paper presents and validates a new method based on land surface energy balances using remotely sensed optical data (including thermal infrared), which allows field and landscape-scale mapping of soil moisture depth-averaged through the root zone of existing vegetation. Root zone depth can be variable when crops are emerging. The pixel-wise “evaporative fraction” (ratio of latent heat flux to net available energy) is related to volumetric soil moisture through a standard regression curve that is independent of soil and vegetation type. Validation with measured root zone soil moisture in cropped soils in Mexico and Pakistan has a root mean square error of | |
| publisher | American Society of Civil Engineers | |
| title | Mapping Root Zone Soil Moisture Using Remotely Sensed Optical Imagery | |
| type | Journal Paper | |
| journal volume | 129 | |
| journal issue | 5 | |
| journal title | Journal of Irrigation and Drainage Engineering | |
| identifier doi | 10.1061/(ASCE)0733-9437(2003)129:5(326) | |
| tree | Journal of Irrigation and Drainage Engineering:;2003:;Volume ( 129 ):;issue: 005 | |
| contenttype | Fulltext | |
