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首页> 外文期刊>Atmospheric environment >Understanding the contributions of anthropogenic and biogenic sources to CO enhancements and outflow observed over North America and the western Atlantic Ocean by TES and MOPITT
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Understanding the contributions of anthropogenic and biogenic sources to CO enhancements and outflow observed over North America and the western Atlantic Ocean by TES and MOPITT

机译：了解TES和MOPITT在北美洲和西大西洋观察到的人为和生物源对CO增强和流出的贡献

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摘要

We investigate the effects of anthropogenic and biogenic sources on tropospheric CO enhancements and outflow over North America and the Atlantic during July-August 2006, the 3rd warmest summer on record. The analysis is performed using the 3D Regional chEmical trAnsport Model (REAM), satellite data from TES on the Aura satellite, MOPITT on the Terra satellite and surface monitor data from the SEARCH network. The satellite measurements of CO provide insight into the location of regional CO enhancements along with the ability to resolve vertical features. Satellite and surface monitor data are used to compare with REAM, illustrating model's ability to reproduce observed CO concentrations. The REAM model used in this study features CO emissions reduced by 50% from the 1999 EPA NEI and biogenic VOC emissions scaled by EPA-observed isoprene concentrations (20% reduction). The REAM simulations show large variations in surface CO, lower tropospheric CO and column CO, which are also observed by the surface observations and satellite data. Over the US, during July-August 2006, the model estimates monthly CO production from anthropogenic sources (5.3 and 5.1 Tg CO) is generally larger than biogenic sources (4.3 and 3.5 Tg CO). However, the model shows that for very warm days, biogenic sources produce as much CO as anthropogenic sources, a result of increased biogenic production due to warmer temperatures. The satellite data show CO outflow occurs along the East Coast of the US and Canada in July and is more broadly distributed over the Atlantic in August. REAM results show the longitudinally exported CO enhancements from anthropogenic sources (3.3 and 3.9 Tg CO) are larger than biogenic sources (2.8 and 2.7 Tg CO) along the eastern boundary of REAM for July-August 2006. We show that when compared with the impacts of both sources on increasing tropospheric CO exports, the relative impacts in August are greater than in July because of preferable outflow transport.
机译：我们调查了2006年7月至8月这是有记录的第3个最热的夏季，人为和生物源对北太平洋和大西洋对流层CO增强和流出的影响。使用3D区域化学运输模型（REAM），Aura卫星上的TES卫星数据，Terra卫星上的MOPITT卫星数据以及SEARCH网络的地表监测器数据进行分析。 CO的卫星测量可以洞悉区域CO增强的位置以及解析垂直特征的能力。卫星和地面监测器数据用于与REAM进行比较，说明该模型具有再现观测到的CO浓度的能力。本研究中使用的REAM模型的特征在于，与1999年的EPA NEI相比，CO排放量减少了50％，根据EPA观察到的异戊二烯浓度（减少了20％）确定了生物VOC排放量。 REAM模拟表明，地面CO，较低对流层CO和柱CO的变化很大，这也可以通过地面观测和卫星数据观察到。在美国，该模型估计，在2006年7月至8月期间，人为来源的每月CO产生量（5.3和5.1 Tg CO）通常大于生物来源（4.3和3.5 Tg CO）。但是，该模型显示，在非常温暖的日子里，由于温度升高，生物源产生的二氧化碳与人为源产生的二氧化碳一样多。卫星数据显示，CO流出于7月发生在美国和加拿大的东海岸，而8月则分布在大西洋上。 REAM结果显示，2006年7月至8月，沿REAM东部边界的人为源（3.3和3.9 Tg CO）的纵向出口CO增强大于生物源（2.8和2.7 Tg CO）。我们显示与影响相比在对流层一氧化碳出口量增加的两个来源中，八月份的相对影响都大于七月份，因为有更好的流出运输。

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  • 来源
    《Atmospheric environment》 |2010年第16期|P.2033-2042|共10页
  • 作者

    Yunsoo Choi; Gregory Osterman; Annmarie Eldering; Yuhang Wang; Eric Edgerton;

  • 作者单位

    Jet Propulsion Laboratory, California Institute of Technology, M/S 183-601, 4800 Oak Crave Drive, Pasadena, CA 91109, USA;

    rnJet Propulsion Laboratory, California Institute of Technology, M/S 183-601, 4800 Oak Crave Drive, Pasadena, CA 91109, USA;

    rnJet Propulsion Laboratory, California Institute of Technology, M/S 183-601, 4800 Oak Crave Drive, Pasadena, CA 91109, USA;

    rnGeorgia Institute of Technology, Atlanta, CA 30332, USA;

    rnAtmospheric Research and Analysis, Inc., Cary, NC 27513, USA;

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  • 正文语种 eng
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  • 关键词

    CO; biogenic source; anthropogenic source; convective outflow;

    机译：一氧化碳生物来源;人为来源;对流流出;

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