Contribution of Changes in Snow Cover Extent to Shortwave Radiation Perturbations at the Top of the Atmosphere over the Northern Hemisphere during 2000-2019
文献类型：期刊论文
| 作者 | Chen, Xiaona1,2,3; Yang, Yaping1,2,3; Yin, Cong1,4 |
| 刊名 | REMOTE SENSING
 |
| 出版日期 | 2021-12-01 |
| 卷号 | 13期号:23页码:18 |
| 关键词 | Northern Hemisphere snow-induced radiative forcing energy budget |
| DOI | 10.3390/rs13234938 |
| 通讯作者 | Chen, Xiaona(chenxn@igsnrr.ac.cn) |
| 英文摘要 | Snow-induced radiative forcing (SnRF), defined as the instantaneous perturbation of the Earth's shortwave radiation at the top of the atmosphere (TOA), results from variations in the terrestrial snow cover extent (SCE), and is critical for the regulation of the Earth's energy budget. However, with the growing seasonal divergence of SCE over the Northern Hemisphere (NH) in the past two decades, novel insights pertaining to SnRF are lacking. Consequently, the contribution of SnRF to TOA shortwave radiation anomalies still remains unclear. Utilizing the latest datasets of snow cover, surface albedo, and albedo radiative kernels, this study investigated the distribution of SnRF over the NH and explored its changes from 2000 to 2019. The 20-year averaged annual mean SnRF in the NH was -1.13 +/- 0.05 W m(-2), with a weakening trend of 0.0047 Wm(-2) yr(-1) (p < 0.01) during 2000-2019, indicating that an extra 0.094 W m(-2) of shortwave radiation was absorbed by the Earth climate system. Moreover, changes in SnRF were highly correlated with satellite-observed TOA shortwave flux anomalies (r = 0.79, p < 0.05) during 2000-2019. Additionally, a detailed contribution analysis revealed that the SnRF in snow accumulation months, from March to May, accounted for 58.10% of the annual mean SnRF variability across the NH. These results can assist in providing a better understanding of the role of snow cover in Earth's climate system in the context of climate change. Although the rapid SCE decline over the NH has a hiatus for the period during 2000-2019, SnRF continues to follow a weakening trend. Therefore, this should be taken into consideration in current climate change models and future climate projections. |
| WOS关键词 | CLIMATE FEEDBACKS ; ALBEDO FEEDBACK ; CRYOSPHERE ; RECORD |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology |
| 语种 | 英语 |
| WOS记录号 | WOS:000734682100001 |
| 出版者 | MDPI |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/169075]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Chen, Xiaona |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China 2.Natl Earth Syst Sci Data Ctr, Beijing 100101, Peoples R China 3.Jiangsu Ctr Collaborat Innovat Geog Informat Reso, Nanjing 210023, Peoples R China 4.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Xiaona,Yang, Yaping,Yin, Cong. Contribution of Changes in Snow Cover Extent to Shortwave Radiation Perturbations at the Top of the Atmosphere over the Northern Hemisphere during 2000-2019[J]. REMOTE SENSING,2021,13(23):18. |
| APA | Chen, Xiaona,Yang, Yaping,&Yin, Cong.(2021).Contribution of Changes in Snow Cover Extent to Shortwave Radiation Perturbations at the Top of the Atmosphere over the Northern Hemisphere during 2000-2019.REMOTE SENSING,13(23),18. |
| MLA | Chen, Xiaona,et al."Contribution of Changes in Snow Cover Extent to Shortwave Radiation Perturbations at the Top of the Atmosphere over the Northern Hemisphere during 2000-2019".REMOTE SENSING 13.23(2021):18. |
入库方式： OAI收割
来源：地理科学与资源研究所
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