Seasonal patterns of SST diurnal variation over the Tropical Warm Pool region
Seasonal patterns of SST diurnal variation over the Tropical Warm Pool region
复制标题
热带暖池地区海温日变化的季节格局
DOI：
10.1002/2016jc012210
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发表时间：
2016
影响因子：
--
通讯作者：
C. Griffin
中科院分区：
文献类型：
--
作者：
Haifeng Zhang;H. Beggs;X. H. Wang;A. Kiss;C. Griffin
由澳大利亚气象局提供的5年（2010 - 2014）先进甚高分辨率辐射计（AVHRR）海温（SST）数据与漂移浮标数据进行了验证，然后用于研究热带暖池地区（TWP, 25°S-15°N, 90°E - 170°E）海温日变化（DV）事件的季节模式。现场验证结果表明，AVHRR海温数据集的总体质量良好，尽管观测到白天测量值的平均低估了0.19 K。夜间观测结果与原位浮标的观测结果吻合较好，平均偏差为0.03 K，偏差标准差为0.30 K。然后使用该海温数据集来表征海温DV的季节模式，以及风速、日最大太阳短波日照（SSImax）和潜热通量（LHF）。研究区海温DV呈双峰型季节分布，3月和10月最强，6月最弱。进行了DV对风、SSImax和LHF的敏感性试验。结果表明：(1)当半天（本研究定义为凌晨2点至下午2点）平均风速固定在2-3 ms−1之间时，不同的上午和下午早些时候的风（当地时间上午7点至下午2点）对DV的影响高达0.73 K；(2)固定风条件下，SSImax水平对DV的调节作用不显著（< 0.68 K）；(3) LHF对DV的影响较弱（< 0.35 K）。这篇文章受版权保护。版权所有。
Five-year (2010 through 2014) Advanced Very High Resolution Radiometer (AVHRR) sea surface temperature (SST) data produced by the Australian Bureau of Meteorology have been validated against drifting buoy data and then used to study the seasonal patterns of the SST diurnal variation (DV) events over the Tropical Warm Pool region (TWP, 25°S–15°N, 90°E–170°E). The in-situ validation results illustrate the overall good quality of the AVHRR SST data set, although an average 0.19 K underestimation of the daytime measurements has been observed. The night-time observations are in good agreement with in-situ buoys with an average bias of 0.03 K and a 0.30 K standard deviation of the biases. This SST data set is then used to characterise the SST DV seasonal patterns, together with wind speeds, daily maximum solar shortwave insolation (SSImax) and latent heat flux (LHF). A double-peak seasonal pattern of SST DV is observed over the study region: the strongest DVs are found in March and October and the weakest in June. Sensitivity tests of DV to wind, SSImax, and LHF are conducted. The results indicate: (1) different morning and early afternoon winds (7 am to 2 pm local time, LT) affect DV by as much as 0.73 K when the half-daily (defined as 2 am to 2 pm LT in this study) average winds are fixed between 2-3 ms−1; (2) SSImax levels regulate DV less significantly (< 0.68 K) under fixed winds; and (3) LHF effects on DV are relatively weak (< 0.35 K). This article is protected by copyright. All rights reserved.
影响因子：
8
作者：
Donlon, C.;Robinson, I.;Rayner, N.
通讯作者：
Rayner, N.