Global estimates of ambient fine particulate matter concentrations from satellite-based aerosol optical depth: development and application.
Global estimates of ambient fine particulate matter concentrations from satellite-based aerosol optical depth: development and application.
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DOI：
10.1289/ehp.0901623
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发表时间：
2010-06
影响因子：
10.4
通讯作者：
Villeneuve PJ
中科院分区：
文献类型：
--
作者：
van Donkelaar A;Martin RV;Brauer M;Kahn R;Levy R;Verduzco C;Villeneuve PJ
由于缺乏监测数据，特别是在发展中国家，直径< 2.5 μm的细颗粒物（PM2.5）的流行病学和健康影响研究受到限制。卫星观测提供了有关PM2.5浓度的有价值的全球信息。在这项研究中，我们开发了一种技术，估计地面PM2.5浓度从卫星观测。我们使用来自中分辨率成像光谱仪（MODIS）和多角度成像光谱仪（MISR）卫星仪器的总气溶胶光学厚度（AOD）和来自GEOS-Chem全球化学传输模型的气溶胶垂直剖面绘制了全球地面PM2.5浓度。我们确定，在约10 km × 10 km分辨率下对长期平均（2001年1月1日至2006年12月31日）PM2.5浓度的全球估计表明，全球人口加权几何平均PM2.5浓度为20 μg/m3。在中亚和东亚，分别有38%和50%的人口超过了世界卫生组织空气质量PM2.5中期目标1（35微克/立方米年平均值）。中国东部地区PM2.5年平均浓度超过80 μg/m3。我们的评估卫星得出的估计与地面为基础的原位测量表明显着的空间协议与北美的测量（r = 0.77;斜率= 1.07; n = 1057）和其他地方的非重合测量（r = 0.83;斜率= 0.86; n = 244）。在卫星派生的PM2.5的1 SD的不确定性是25%，这是推断从气溶胶光学厚度反演和气溶胶垂直廓线误差和采样。全球人口加权平均不确定性为6.7微克/立方米。卫星获得的总柱气溶胶光学厚度与化学传输模型相结合，提供了全球长期平均PM2.5浓度的估计。
Epidemiologic and health impact studies of fine particulate matter with diameter < 2.5 μm (PM2.5) are limited by the lack of monitoring data, especially in developing countries. Satellite observations offer valuable global information about PM2.5 concentrations. In this study, we developed a technique for estimating surface PM2.5 concentrations from satellite observations. We mapped global ground-level PM2.5 concentrations using total column aerosol optical depth (AOD) from the MODIS (Moderate Resolution Imaging Spectroradiometer) and MISR (Multiangle Imaging Spectroradiometer) satellite instruments and coincident aerosol vertical profiles from the GEOS-Chem global chemical transport model. We determined that global estimates of long-term average (1 January 2001 to 31 December 2006) PM2.5 concentrations at approximately 10 km × 10 km resolution indicate a global population-weighted geometric mean PM2.5 concentration of 20 μg/m3. The World Health Organization Air Quality PM2.5 Interim Target-1 (35 μg/m3 annual average) is exceeded over central and eastern Asia for 38% and for 50% of the population, respectively. Annual mean PM2.5 concentrations exceed 80 μg/m3 over eastern China. Our evaluation of the satellite-derived estimate with ground-based in situ measurements indicates significant spatial agreement with North American measurements (r = 0.77; slope = 1.07; n = 1057) and with noncoincident measurements elsewhere (r = 0.83; slope = 0.86; n = 244). The 1 SD of uncertainty in the satellite-derived PM2.5 is 25%, which is inferred from the AOD retrieval and from aerosol vertical profile errors and sampling. The global population-weighted mean uncertainty is 6.7 μg/m3. Satellite-derived total-column AOD, when combined with a chemical transport model, provides estimates of global long-term average PM2.5 concentrations.
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影响因子：
11.4
作者：
Liu, Y;Sarnat, JA;Koutrakis, P
通讯作者：
Koutrakis, P
影响因子：
4.4
作者：
Levy, Robert C.;Remer, Lorraine A.;Dubovik, Oleg
通讯作者：
Dubovik, Oleg
影响因子：
4.4
作者：
Lamsal, L. N.;Martin, R. V.;Pinto, J. P.
通讯作者：
Pinto, J. P.
影响因子：
5
作者：
Gupta, Pawan;Christopher, Sundar A.;Kumar, Naresh
通讯作者：
Kumar, Naresh
DOI：
10.3155/1047-3289.57.11.1351
发表时间：
2007-11-01
影响因子：
2.7
作者：
Liu, Yang;Koutrakis, Petros;Kahn, Ralph
通讯作者：
Kahn, Ralph