A practical exploration of land cover impacts on surface and air temperature when they are most consequential
A practical exploration of land cover impacts on surface and air temperature when they are most consequential
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土地覆盖对地表和气温最重要影响的实际探索
DOI：
10.1088/2752-5295/accdf9
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Barnes, Mallory L.
中科院分区：
文献类型：
--
作者：
Novick, Kimberly A.;Barnes, Mallory L.
土地覆盖和土地管理（LCLM）的广泛变化正在被激励作为缓解气候变化的工具，迫切需要对LCLM如何影响地表能量平衡和温度进行预测评估。从历史上看，观测研究往往侧重于LCLM如何影响地表温度（Tsurf），通常是以年度为时间尺度。然而，了解LCLM变化带来气候适应效益或产生意外不利后果的潜力，需要仔细考虑对Tsurf和近地表气温（Ta，当地）的影响，当它们对生态系统和社会福祉最重要时（例如在炎热的夏天）。在这里，来自分布在19-71 °N之间的130个AmeriFlux塔的长期数据被用来系统地探索LCLM对TsurfandTa的影响，当地，明确关注夏季正午时段，此时可以说最需要自适应冷却。我们观察到LCLM对Tsurfat中午的深远影响，从一个地点到下一个地点的差异通常达到10 K或更多。LCLM对Ta、local的影响较小，但仍然很大，在不同站点之间驱动5-10 K的变化。LCLM对TsurfandTa的影响程度，当地没有很好地解释植物功能类型，气候制度，或COLODO;然而，我们表明，LCLM的变化，增强ET或增加冠层高度可能会赋予当地中午的冷却效益TsurfandTa，当地几乎的时间。在夜间，LCLM对温度的影响要小得多，因此在昼夜周期中取平均值将低估土地覆盖在植物和人类福祉后果最严重时调节小气候的潜力。最后，在特别炎热的时期，土地覆被对Ta、地方和Tsurfare的影响不太协调，在正常条件下倾向于冷却空气的生态系统在非常炎热的时候可能会减少这样做的能力。最后，我们提出了一套切实可行的建议，为今后的工作评估生物物理的影响和适应潜力的LCLM的变化。
Widespread shifts in land cover and land management (LCLM) are being incentivized as tools to mitigate climate change, creating an urgent need for prognostic assessments of how LCLM impacts surface energy balance and temperature. Historically, observational studies have tended to focus on how LCLM impacts surface temperature (Tsurf), usually at annual timescales. However, understanding the potential for LCLM change to confer climate adaptation benefits, or to produce unintended adverse consequences, requires careful consideration of impacts on bothTsurfand the near-surface air temperature (Ta,local) when they are most consequential for ecosystem and societal well-being (e.g. on hot summer days). Here, long-term data from 130 AmeriFlux towers distributed between 19–71 °N are used to systematically explore LCLM impacts on bothTsurfandTa,local, with an explicit focus on midday summer periods when adaptive cooling is arguably most needed. We observe profound impacts of LCLM onTsurfat midday, frequently amounting to differences of 10 K or more from one site to the next. LCLM impacts onTa,localare smaller but still significant, driving variation of 5–10 K across sites. The magnitude of LCLM impacts on bothTsurfandTa,localis not well explained by plant functional type, climate regime, or albedo; however, we show that LCLM shifts that enhance ET or increase canopy height are likely to confer a local mid-day cooling benefit for bothTsurfandTa,localmost of the time. At night, LCLM impacts on temperature are much smaller, such that averaging across the diurnal cycle will underestimate the potential for land cover to mediate microclimate when the consequences for plant and human well-being are most stark. Finally, during especially hot periods, land cover impacts onTa,localandTsurfare less coordinated, and ecosystems that tend to cool the air during normal conditions may have a diminished capacity to do so when it is very hot. We end with a set of practical recommendations for future work evaluating the biophysical impacts and adaptation potential of LCLM shifts.
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影响因子：
6.2
作者：
M. Helbig;T. Gerken;E. Beamesderfer;D. Baldocchi;T. Banerjee;S. Biraud;W. Brown;N. Brunsell;E. Burakowski;S. Burns;Brian J. Butterworth;W. S. Chan;K. Davis;A. Desai;J. Fuentes;D. Hollinger;N. Kljun;M. Mauder;K. Novick;J. M. Perkins;D. Rahn;C. Rey‐Sanchez;J. Santanello;P. Stoy;R. Sullivan;A. Richardson
通讯作者：
M. Helbig;T. Gerken;E. Beamesderfer;D. Baldocchi;T. Banerjee;S. Biraud;W. Brown;N. Brunsell;E. Burakowski;S. Burns;Brian J. Butterworth;W. S. Chan;K. Davis;A. Desai;J. Fuentes;D. Hollinger;N. Kljun;M. Mauder;K. Novick;J. M. Perkins;D. Rahn;C. Rey‐Sanchez;J. Santanello;P. Stoy;R. Sullivan;A. Richardson
DOI：
10.3334/ornldaac/1219
发表时间：
2014
期刊：
--
影响因子：
--
作者：
P. Thornton;M. Thornton;Ben Mayer;N. Wilhelmi;Yaxing Wei;R. Devarakonda;R. Cook
通讯作者：
P. Thornton;M. Thornton;Ben Mayer;N. Wilhelmi;Yaxing Wei;R. Devarakonda;R. Cook
与气候赌博：自然气候解决方案的风险有多大？
影响因子：
8.4
作者：
W. Anderegg
通讯作者：
W. Anderegg
影响因子：
9.8
作者：
Pastorello, Gilberto;Trotta, Carlo;Papale, Dario
通讯作者：
Papale, Dario
影响因子：
6.2
作者：
T. Duman;Cheng‐Wei Huang;M. Litvak
通讯作者：
T. Duman;Cheng‐Wei Huang;M. Litvak