...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Atmospheric chemistry and physics >Improved agreement of AIRS tropospheric carbon monoxide products with other EOS sensors using optimal estimation retrievals
【24h】

Improved agreement of AIRS tropospheric carbon monoxide products with other EOS sensors using optimal estimation retrievals

机译：使用最佳估计检索，改进了AIRS对流层一氧化碳产品与其他EOS传感器的一致性

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We present in this paper an alternative retrieval algorithm for theAtmospheric Infrared Sounder (AIRS) tropospheric Carbon Monoxide (CO)products using the Optimal Estimation (OE) technique, which is differentfrom the AIRS operational algorithm. The primary objective for this studywas to compare AIRS CO, as well as the other retrieval properties such asthe Averaging Kernels (AKs), the Degrees of Freedom for Signal (DOFS), andthe error covariance matrix, against the Tropospheric Emission Spectrometer(TES) and the Measurement of Pollution in the Troposphere (MOPITT) CO, whichwere also derived using the OE technique. We also demonstrate that AIRS OECO results are much more realistic than AIRS V5 operational CO, especiallyin the lower troposphere and in the Southern Hemisphere (SH). These productsare validated with in situ profiles obtained by the Differential AbsorptionCarbon Monoxide Measurements (DACOM), which took place as part of NASA'sIntercontinental Chemical Transport Experiment (INTEX-B) field mission thatwas conducted over the northern Pacific in Spring 2006. To demonstrate thedifferences existing in the current operational products we first show adetailed direct comparison between AIRS V5 and TES operational V3 CO for theglobal datasets from December 2005 to July 2008. We then present global COcomparisons between AIRS OE, TES V3, and MOPITT V4 at selected pressurelevels as well as for the total column amounts. We conclude that thetropospheric CO retrievals from AIRS OE and TES V3 agree to within 5–10 ppbv or 5% on average globally and throughout the free troposphere. Theagreements in total column CO amounts between AIRS OE and MOPITT V4 haveimproved significantly compared to AIRS V5 with global relative RMSdifferences now being 12.7%.
机译：我们在本文中提出了一种使用最优估计（OE）技术的大气红外探测器（AIRS）对流层一氧化碳（CO）产品的替代检索算法，该算法不同于AIRS运算算法。这项研究的主要目的是将AIRS CO以及其他取回特性（如平均核（AKs），信号自由度（DOFS）和误差协方差矩阵）与对流层发射光谱仪（TES）和对流层CO（MOPITT）CO的污染测量，也使用OE技术得出。我们还证明了AIRS OECO的结果比AIRS V5运行的CO更为现实，尤其是在对流层下部和南半球（SH）。这些产品已通过差分吸收一氧化碳测量（DACOM）获得的原位分布图进行了验证，该测量是2006年春季在北太平洋进行的NASA洲际化学品运输实验（INTEX-B）实地考察的一部分。我们首先显示需要对现有操作产品中的现有产品进行直接比较，以比较2005年12月至2008年7月全球数据集的AIRS V5和TES操作V3 CO。然后，我们还将介绍在选定压力水平下AIRS OE，TES V3和MOPITT V4之间的全球CO比较。至于总列数。我们得出的结论是，从全球范围以及整个自由对流层中，AIRS OE和TES V3的对流层CO取回均同意在5-10 ppbv以内或平均5％。与AIRS V5相比，AIRS OE和MOPITT V4之间的总塔CO量的协议已得到显着改善，目前全球相对RMS差异为12.7％。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号