On the interchangeability of sea-surface and near-surface air temperature anomalies in climatologies
On the interchangeability of sea-surface and near-surface air temperature anomalies in climatologies
复制标题
气候学中海面和近地表气温异常的互换性
作者：
A. Rubino;D. Zanchettin;Francesco De Rovere;M. Mcphaden
在全球和半球尺度上，海表温度（SST）异常被认为是近地表海洋空气温度（MAT）异常的良好替代品。事实上，全球网格温度数据集通常混合SST和近地面气温异常，以克服缺乏地理上均匀和可靠的MAT观测。在这里，我们表明，SST和MAT异常不同的重要统计特性，如多年趋势和概率分布的每日和每月平均值。我们提供的证据表明，从一系列的系泊浮标在热带太平洋缺乏可识别性。我们确定统计上显着的SST和MAT异常之间的差异，以及这样的浮标组。因此，在通过SST观测表征和解释MAT变率时需要谨慎，特别是在短于十年的时间尺度上。
On global and hemispheric scales, sea-surface temperature (SST) anomalies are assumed to be good surrogates for near-surface marine air temperature (MAT) anomalies. In fact, global gridded temperature datasets commonly blend SST and near-surface air temperature anomalies to overcome the lack of geographically homogeneous and reliable MAT observations. Here, we show that SST and MAT anomalies differ regarding crucial statistical properties such as multiannual trends and probabilistic distributions of daily and monthly averages. We provide evidence of the lack of interchangeability from an array of moored buoys in the tropical Pacific Ocean. We identify statistically significant discrepancies between SST and MAT anomalies for single as well as groups of such buoys. Thus, caution is required when characterizing and interpreting MAT variability through SST observations, especially at shorter than decadal timescale.
评估原位全球表面海洋气候观测系统的健康状况
DOI：
10.1002/joc.4914
发表时间：
2016
期刊：
International Journal of Climatology
影响因子：
--
作者：
Berry D
通讯作者：
Berry D