Surface water, vegetation, and fire as drivers of the terrestrial Arctic-boreal albedo feedback
Surface water, vegetation, and fire as drivers of the terrestrial Arctic-boreal albedo feedback
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地表水、植被和火灾是陆地北极-北方反照率反馈的驱动因素
DOI：
10.1088/1748-9326/ac14ea
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发表时间：
2021
影响因子：
6.7
通讯作者：
Lichstein, J W
中科院分区：
文献类型：
--
作者：
Webb, E E;Loranty, M M;Lichstein, J W
北极变暖的速度是全球平均速度的两倍，部分原因是冰冻圈缩小的间接反馈。随着积雪覆盖范围的减少，下面的土地暴露出来，具有较低的辐射，因此吸收更多的辐射，使地表变暖，并对气候变化产生积极的反馈。陆地无雪覆盖层的变化（例如植被或地表水的变化）也可能影响地球的能量平衡，但它们对当代气候变化的重要性相对未知。在这里，我们表明，地表水的变化显着改变了Article-boreal北半球，并解释了2000年至2019年每月北半球变化的空间变化高达27%。由于地表水范围的变化而导致的辐射强迫的增加在连续多年冻土区最为明显，有助于多年冻土融化和气候变化之间的正反馈。此外，我们表明，火灾的历史和变化的树木覆盖和地表水的程度一起占至少15%，在研究期间的CONDO引起的辐射强迫，表明这些过程是一个区域性的重要方面的气候CONDO反馈。
The Arctic is warming twice as fast as the global average, due in part to the albedo feedbacks of a diminishing cryosphere. As snow cover extent decreases, the underlying land is exposed, which has lower albedo and therefore absorbs more radiation, warming the surface and causing a positive feedback to climate change. Changes in terrestrial snow-free albedo (e.g. changes in vegetation or surface water) could also affect Earth’s energy balance, but their importance for contemporary climate change is relatively unknown. Here we show that changes in surface water are significantly altering Artic-boreal albedo, and explain up to 27% of the spatial variation in monthly albedo change from 2000 to 2019. The increase in radiative forcing due to changes in surface water extent is most pronounced in the continuous permafrost zone, contributing to a positive feedback between permafrost thaw and climate change. Additionally, we show that fire history and changes in tree cover and surface water extent together account for at least 15% of albedo-induced radiative forcing over the study period, indicating that these processes are a regionally important aspect of the climate-albedo feedback.
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影响因子：
11.6
作者：
S. Potter;Kylen Solvik;A. Erb;S. Goetz;J. Johnstone;M. Mack;J. Randerson;M. Roman;C. Schaaf;M. Turetsky;S. Veraverbeke;X. Walker;Zhuosen Wang;R. Massey;B. Rogers
通讯作者：
S. Potter;Kylen Solvik;A. Erb;S. Goetz;J. Johnstone;M. Mack;J. Randerson;M. Roman;C. Schaaf;M. Turetsky;S. Veraverbeke;X. Walker;Zhuosen Wang;R. Massey;B. Rogers
影响因子：
6.7
作者：
Chen, Dong;Loboda, Tatiana V.
通讯作者：
Loboda, Tatiana V.
在气候变化下的森林干扰。
影响因子：
30.7
作者：
Seidl R;Thom D;Kautz M;Martin-Benito D;Peltoniemi M;Vacchiano G;Wild J;Ascoli D;Petr M;Honkaniemi J;Lexer MJ;Trotsiuk V;Mairota P;Svoboda M;Fabrika M;Nagel TA;Reyer CPO
通讯作者：
Reyer CPO
卫星微波遥感北极-北方地区地表水淹没变化对比
影响因子：
13.5
作者：
J. Watts;J. S. Kimball;L. Jones;R. Schroeder;K. McDonald
通讯作者：
K. McDonald
影响因子：
5.1
作者：
Bright, Ryan M.;O'Halloran, Thomas L.
通讯作者：
O'Halloran, Thomas L.