Why Did Large Differences Arise in the Sea Surface Temperature Datasets across the Tropical Pacific during 2012
Why Did Large Differences Arise in the Sea Surface Temperature Datasets across the Tropical Pacific during 2012
复制标题
2012年热带太平洋海表温度数据为何出现较大差异
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
Arun Kumar
中科院分区：
文献类型：
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作者：
Boyin Huang;M. L’Heureux;J. Lawrimore;Chunying Liu;Huai;V. Banzon;Zeng‐Zhen Hu;Arun Kumar
摘要2012年6 - 11月，热带太平洋海温（SST）异常在三种广泛使用的海温产品（扩展重建海温版本3b (ERSSTv3b)）和最佳插值海温版本2 (OISST)（每周（OISSTwk）和每日（OISSTdy））之间存在显著差异。2012年6 - 8月，erstv3b海温距平指数比OISSTwk和OISSTdy海温距平指数低0.2°-0.3°C， 9 - 11月海温距平指数高0.3°-0.4°C。这种差异会影响对厄尔尼诺-南方涛动状态的评估，而厄尔尼诺-3.4海温指数的阈值为±0.5°C。为了研究erstv3b和OISSTdy/OISSTwk之间差异的原因，创建了一个与erstv3b类似的实验分析（称为erstsat），但包括卫星衍生的sst。然而，厄尔尼诺-3.4海温指数在erstsat和OISSTd之间仍然存在显著差异。
AbstractDuring June–November 2012, pronounced differences in tropical Pacific sea surface temperature (SST) anomalies were observed between three widely used SST products: the extended reconstructed SST version 3b (ERSSTv3b), and the optimum interpolation SST version 2 analyses (OISST), produced weekly (OISSTwk) and daily (OISSTdy). During June–August 2012, the Nino-3.4 SST anomaly (SSTA) index was 0.2°–0.3°C lower in ERSSTv3b than in OISSTwk and OISSTdy, while it was 0.3°–0.4°C higher from September to November 2012. Such differences in the Nino-3.4 SSTA index can impact the assessment of the status of the El Nino–Southern Oscillation, which is determined using a threshold of ±0.5°C in the Nino-3.4 SSTA index.To investigate the reasons for the differences between ERSSTv3b and OISSTdy/OISSTwk, an experimental analysis (called ERSSTsat) is created that is similar to ERSSTv3b but includes satellite-derived SSTs. However, significant differences in the Nino-3.4 SSTA index remained between ERSSTsat and OISSTd...