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@article{1705618,
author = {Nedbal, Vaclav and Láska, Kamil and Brom, Jakub},
article_location = {Basel},
article_number = {20},
doi = {http://dx.doi.org/10.3390/rs12203395},
keywords = {solar energy distribution; arctic tundra surface energy balance; vegetation and evapotranspiration; LANDSAT; vegetation cooling},
language = {eng},
issn = {2072-4292},
journal = {Remote Sensing},
title = {Mitigation of Arctic Tundra Surface Warming by Plant Evapotranspiration: Complete Energy Balance Component Estimation Using LANDSAT Satellite Data},
url = {https://doi.org/10.3390/rs12203395},
volume = {12},
year = {2020}
}
TY - JOUR
ID - 1705618
AU - Nedbal, Vaclav - Láska, Kamil - Brom, Jakub
PY - 2020
TI - Mitigation of Arctic Tundra Surface Warming by Plant Evapotranspiration: Complete Energy Balance Component Estimation Using LANDSAT Satellite Data
JF - Remote Sensing
VL - 12
IS - 20
SP - 1-16
EP - 1-16
PB - MDPI
SN - 20724292
KW - solar energy distribution
KW - arctic tundra surface energy balance
KW - vegetation and evapotranspiration
KW - LANDSAT
KW - vegetation cooling
UR - https://doi.org/10.3390/rs12203395
L2 - https://doi.org/10.3390/rs12203395
N2 - Global climate change is expected to cause a strong temperature increase in the polar regions, accompanied by a reduction in snow cover. Due to a lower albedo, bare ground absorbs more solar energy and its temperature can increase more. Here, we show that vegetation growth in such bare ground areas can efficiently mitigate surface warming in the Arctic, thanks to plant evapotranspiration. In order to establish a comprehensive energy balance for the Arctic land surface, we used an ensemble of methods of ground-based measurements and multispectral satellite image analysis. Our estimate is that the low vegetation of polar tundra transforms 26% more solar energy into evapotranspiration than bare ground in clear sky weather. Due to its isolation properties, vegetation further reduces ground heat flux under the surface by similar to 4%, compared to bare areas, thus lowering the increase in subsurface temperature. As a result, similar to 22% less solar energy can be transformed into sensible heat flux at vegetated surfaces as opposed to bare ground, bringing about a decrease in surface temperature of similar to 7.8 degrees C.
ER -
NEDBAL, Vaclav, Kamil LÁSKA a Jakub BROM. Mitigation of Arctic Tundra Surface Warming by Plant Evapotranspiration: Complete Energy Balance Component Estimation Using LANDSAT Satellite Data. \textit{Remote Sensing}. Basel: MDPI, 2020, roč.~12, č.~20, s.~1-16. ISSN~2072-4292. Dostupné z: https://dx.doi.org/10.3390/rs12203395.
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