Dust Properties and Radiative Impacts at a Suburban Site during 2004-2017 in the North China Plain
Dust Properties and Radiative Impacts at a Suburban Site during 2004-2017 in the North China Plain
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2004-2017年华北平原郊区粉尘特性及辐射影响
DOI：
10.3390/rs11161842
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发表时间：
2019-08
期刊：
影响因子：
5
通讯作者：
Li Jun
中科院分区：
文献类型：
--
作者：
Zhang Jinqiang;Xia Xiangao;Zong Xuemei;Fan Xuehua;Chen Hongbin;Li Jun
气溶胶及其辐射效应是气候研究的主要关注点，因为它们对气候变化具有重要影响。沙尘气溶胶是华北平原重要的气溶胶类型，主要是长距离输送的结果，表现出显着的时空变化。通过使用2004年9月至2017年5月期间气溶胶机器人网络（AERONET）的测量数据、星载中分辨率成像光谱仪（MODIS）以及云气溶胶激光雷达和红外探路卫星观测（CALIPSO）气溶胶产品，我们研究了华北地区郊区香河（XH）的沙尘气溶胶特性及其辐射效应。相对于其他三个季节（总共 41 天），春季（总共 105 天）发生沙尘事件的频率最高。 675 nm处沙尘气溶胶光学深度（AOD）在春季最大（0.60±0.44），其次是秋季（0.58±0.39）、夏季（0.54±0.15）和冬季（0.53±0.23）。大气底部和顶部沙尘气溶胶辐射强迫（RF）的冷却效应在春季（−96.72±45.69和−41.87±19.66 Wm−2）最强，夏季（−57.08±18.54和−25.54±4.45 Wm−2）、秋季（−72.01±27.27）和−32.54 ± 15.18 Wm−2)，以及冬季(−79.57 ± 32.96 和−37.05 ± 17.06 Wm−2)。回溯轨迹分析表明，到达XH的500 m处沙尘气团一般来源于中国北方戈壁等沙漠和蒙古（59.8%），其次是中国西北地区和哈萨克斯坦（37.2%）；少数沙尘病例来自中国东北地区（3.0%）。所有尘埃事件以及按三个方向的来源分类的尘埃事件都说明了单峰结构，最大值出现在约 2 公里处。特别讨论了三个典型的沙尘事件，以更好地揭示长距离传输如何影响NCP上的沙尘特性和辐射效应。这里提出的结果预计将提高我们对NCP上空尘埃气溶胶的物理特性及其主要传输路径以及对区域太阳辐射预算的重大影响的理解。
Aerosols and their radiative effects are of primary interest in climate research because of their vital influence on climate change. Dust aerosols are an important aerosol type in the North China Plain (NCP), mainly as a result of long-range transport, showing substantial spatiotemporal variations. By using measurements from the Aerosol Robotic Network (AERONET) between September 2004 and May 2017, and the space-borne Moderate Resolution Imaging Spectroradiometer (MODIS) and Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) aerosol products, we investigated the properties of dust aerosols and their radiative effects at Xianghe (XH)—a suburban site in the NCP. Dust events occurred most frequently during spring (a total of 105 days) relative to the other three seasons (a total of 41 days) during the periods concerned. The dust aerosol optical depth (AOD) at 675 nm was at a maximum in spring (0.60 ± 0.44), followed (in decreasing order) by those in autumn (0.58 ± 0.39), summer (0.54 ± 0.15), and winter (0.53 ± 0.23). Cooling effects of dust aerosol radiative forcing (RF) at the bottom and top of the atmosphere tended to be strongest in spring (−96.72 ± 45.69 and −41.87 ± 19.66 Wm−2) compared to that in summer (−57.08 ± 18.54 and −25.54 ± 4.45 Wm−2), autumn (−72.01 ± 27.27 and −32.54 ± 15.18 Wm−2), and winter (−79.57 ± 32.96 and −37.05 ± 17.06 Wm−2). The back-trajectory analysis indicated that dust air mass at 500 m that arrived at XH generally originated from the Gobi and other deserts of northern China and Mongolia (59.8%), and followed by northwest China and Kazakhstan (37.2%); few dust cases came from northeast China (3.0%). A single-peaked structure with the maximum occurring at ~2 km was illustrated by all dust events and those sorted by their sources in three directions. Three typical dust events were specifically discussed to better reveal how long-range transport impacted the dust properties and radiative effects over the NCP. The results presented here are expected to improve our understanding of the physical properties of dust aerosols over the NCP and their major transport path and significant impacts on the regional solar radiation budget.
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影响因子：
4.4
作者：
Sokolik, IN;Toon, OB
通讯作者：
Toon, OB
华北平原城市和郊区的柱综合气溶胶光学和物理特性比较
影响因子：
5.8
作者：
Fan Xuehua;Xia Xiang'ao;Chen Hongbin;Xia Xiang'ao;Chen Hongbin;Fan XH
通讯作者：
Fan XH
影响因子：
5.2
作者：
Jun Wang;X. Xia;Pucai C. Wang;S. Christopher
通讯作者：
Jun Wang;X. Xia;Pucai C. Wang;S. Christopher
影响因子：
4.4
作者：
Husar, RB;Tratt, DM;Malm, WC
通讯作者：
Malm, WC
DOI：
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发表时间：
2004
期刊：
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影响因子：
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作者：
通讯作者：
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