contributor author | Pryor, S. C. | |
contributor author | Sullivan, R. C. | |
contributor author | Wright, T. | |
date accessioned | 2017-06-09T16:51:10Z | |
date available | 2017-06-09T16:51:10Z | |
date copyright | 2016/08/01 | |
date issued | 2016 | |
identifier issn | 1558-8424 | |
identifier other | ams-75300.pdf | |
identifier uri | http://onlinelibrary.yabesh.ir/handle/yetl/4217620 | |
description abstract | ntroduction of irrigated agriculture changes the partitioning of the surface energy flux between sensible and latent heat (H vs LE) and alters the albedo α and emissivity ε. In the absence of changes in the radiation components of the surface energy balance, the change in the Bowen ratio due to irrigation typically suppresses the local air temperature T but increases the total near-surface atmospheric heat content (as measured using equivalent potential temperature ?e). While the effect of irrigation on surface energy partitioning due to enhanced surface and subsurface water availability has long been acknowledged, the roles of associated changes in ε and α have received less attention, and the scales and magnitudes of these effects remain uncertain. A new methodology designed for application to in situ and remote sensing data is presented and used to demonstrate that the net impact of irrigation on T and ?e is strongly dependent on the regional climate, land cover in surrounding areas, and the amount of irrigation in the upwind fetch. The results suggest that the impact of the radiative forcing terms on net available energy is not negligible and may amplify or offset the impact from changed energy partitioning on T and ?e depending on the specific regional climate and land cover. | |
publisher | American Meteorological Society | |
title | Quantifying the Roles of Changing Albedo, Emissivity, and Energy Partitioning in the Impact of Irrigation on Atmospheric Heat Content | |
type | Journal Paper | |
journal volume | 55 | |
journal issue | 8 | |
journal title | Journal of Applied Meteorology and Climatology | |
identifier doi | 10.1175/JAMC-D-15-0291.1 | |
journal fristpage | 1699 | |
journal lastpage | 1706 | |
tree | Journal of Applied Meteorology and Climatology:;2016:;volume( 055 ):;issue: 008 | |
contenttype | Fulltext | |