Clouds and the Earth's Radiant Energy System (CERES) Energy Balanced and Filled (EBAF) Top-of-Atmosphere (TOA) Edition-4.0 Data Product
Clouds and the Earth's Radiant Energy System (CERES) Energy Balanced and Filled (EBAF) Top-of-Atmosphere (TOA) Edition-4.0 Data Product
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DOI：
10.1175/jcli-d-17-0208.1
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发表时间：
2018-01-01
影响因子：
4.9
通讯作者：
Kato, Seiji
中科院分区：
文献类型：
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作者：
Loeb, Norman G.;Doelling, David R.;Kato, Seiji
描述了云和地球辐射能量系统(CERES)能量平衡和填充(EBAF)大气层顶(TOA)版本4.0(ED4.0)，数据产品。EBAF Ed4.0是对EBAF Ed2.8的更新，整合了CERES数据产品算法改进的所有Ed4.0套件和整个记录中一致的输入数据集。对短波和长波TOA通量进行了一次性调整，以确保2005年7月至2015年6月全球平均净TOA通量与实测值0.71Wm(-2)相一致。ED4.0和ED2.8之间的全球平均全天TOA通量差在0.5W m(-2)以内，而在海洋层积云和雪/海冰区出现了明显的西南地区差异。西南晴空TOA通量在极地和大洋沙尘区存在明显的区域差异。在持续的高云区，EBAFED4.0的晴空LW TOA通量超过ED2.8。由于全球平均晴空TOA通量的显著差异，EBAFED4.0的净云辐射效应为-18Wm(-2)，而EBAFEd2.8的净云辐射效应为-21Wm(-2)。18318纬度-经度区域月全天空TOA通量的总不确定度估计为3W m(-2)[1标准差(1西格玛)]，对于Terra-Aqua周期，西南和LW通量均为2.5W m(-2)。西南晴空区域月通量不确定度估计为6Wm(-2)，仅Terra-Aqua期为5Wm(-2)。仅Terra的LW晴空区域月通量不确定度为5W m(-2)，Terra-Aqua的月通量不确定性为4.5 W m(-2)。
The Clouds and the Earth's Radiant Energy System (CERES) Energy Balanced and Filled (EBAF) top-of-atmosphere (TOA), Edition 4.0 (Ed4.0), data product is described. EBAF Ed4.0 is an update to EBAF Ed2.8, incorporating all of the Ed4.0 suite of CERES data product algorithm improvements and consistent input datasets throughout the record. A one-time adjustment to shortwave (SW) and longwave (LW) TOA fluxes is made to ensure that global mean net TOA flux for July 2005-June 2015 is consistent with the in situ value of 0.71 W m(-2). While global mean all-sky TOA flux differences between Ed4.0 and Ed2.8 are within 0.5 W m(-2), appreciable SW regional differences occur over marine stratocumulus and snow/sea ice regions. Marked regional differences in SW clear-sky TOA flux occur in polar regions and dust areas over ocean. Clear-sky LW TOA fluxes in EBAF Ed4.0 exceed Ed2.8 in regions of persistent high cloud cover. Owing to substantial differences in global mean clear-sky TOA fluxes, the net cloud radiative effect in EBAF Ed4.0 is -18 W m(-2) compared to -21 W m(-2) in EBAF Ed2.8. The overall uncertainty in 18 3 18 latitude-longitude regional monthly all-sky TOA flux is estimated to be 3 W m(-2) [one standard deviation (1 sigma)] for the Terra-only period and 2.5 W m(-2) for the Terra-Aqua period both for SW and LW fluxes. The SW clear-sky regional monthly flux uncertainty is estimated to be 6 W m(-2) for the Terra-only period and 5 W m(-2) for the Terra-Aqua period. The LW clear-sky regional monthly flux uncertainty is 5 W m(-2) for Terra only and 4.5 W m(-2) for Terra-Aqua.