An assessment of the tropical humidity‐temperature covariance using AIRS
An assessment of the tropical humidity‐temperature covariance using AIRS
复制标题
使用 AIRS 评估热带湿度-温度协方差
DOI：
10.1029/2008gl033805
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发表时间：
2008
影响因子：
5.2
通讯作者：
L. Strow
中科院分区：
文献类型：
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作者：
A. Gambacorta;C. Barnet;B. Soden;L. Strow
我们利用大气红外探测器 (AIRS) 的卫星测量结果研究热带对流层水蒸气和温度之间协方差的水平和垂直结构。我们的分析揭示了水蒸气和温度之间的局部协方差存在很大的空间梯度。正相关主导热带对流层低层和高层，而负相关区域常见于热带对流层中层。虽然热带平均水汽和温度剖面的回归揭示了与克劳修斯-克拉佩龙体系相同数量级的斜率，但局部值的回归可能比克劳修斯-克拉佩龙预测大一个数量级。还显示了 NOAA GFDL 全球环流模型的结果以供比较。
We investigate the horizontal and vertical structure of the covariance between water vapor and temperature in the tropical troposphere, using satellite measurements from the Atmospheric InfraRed Sounder (AIRS). Our analysis reveals large spatial gradients in the local covariance between water vapor and temperature. Positive correlations dominate the tropical lower and upper troposphere, while regions of negative correlation are common in the tropical middle troposphere. While regressions of the tropical mean water vapor and temperature profiles reveal slopes of the same order of magnitude of the Clausius‐Clapeyron regime, the regression of local values can be up to an order of magnitude larger than the Clausius‐Clapeyron prediction. Results from the NOAA GFDL global circulation model are also shown for comparison.