Author:
Maina Fadji Z.,Kumar Sujay V.,Gangodagamage Chandana
Abstract
AbstractHuman and climate induced land surface changes resulting from irrigation, snow cover decreases, and greening impact the surface albedo over High Mountain Asia (HMA). Here we use a partial information decomposition approach and remote sensing data to quantify the effects of the changes in leaf area index, soil moisture, and snow cover on the surface albedo in HMA, home to over a billion people, from 2003 to 2020. The study establishes strong evidence of anthropogenic agricultural water use over irrigated lands (e.g., Ganges–Brahmaputra) which causes the highest surface albedo decreases (≤ 1%/year). Greening and decreased snow cover from warming also drive changes in visible and near-infrared surface albedo in different areas of HMA. The significant role of irrigation and greening in influencing albedo suggests the potential of a positive feedback cycle where albedo decreases lead to increased evaporative demand and increased stress on water resources.
Funder
National Aeronautics and Space Administration
Publisher
Springer Science and Business Media LLC
Reference77 articles.
1. Dickinson, R. E. Land surface processes and climate—Surface albedos and energy balance. In Advances in Geophysics Vol. 25 (ed. Saltzman, B.) 305–353 (Elsevier, 1983).
2. Liang, S., Wang, K., Zhang, X. & Wild, M. Review on estimation of land surface radiation and energy budgets from ground measurement, remote sensing and model simulations. IEEE J. Sel. Top. Appl. Earth Obs. Remote Sens. 3, 225–240 (2010).
3. Betts, R. A. Offset of the potential carbon sink from boreal forestation by decreases in surface albedo. Nature 408, 187–190 (2000).
4. Wang, S., Grant, R. F., Verseghy, D. L. & Black, T. A. Modelling carbon-coupled energy and water dynamics of a boreal aspen forest in a general circulation model land surface scheme. Int. J. Climatol. 22, 1249–1265 (2002).
5. Wang, S., Grant, R. F., Verseghy, D. L. & Black, T. A. Modelling plant carbon and nitrogen dynamics of a boreal aspen forest in CLASS—The Canadian land surface scheme. Ecol. Model. 142, 135–154 (2001).
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