Daily L4 Optimally Interpolated SST (OISST) In situ and AVHRR Analysis for 2016-04-29 (NCEI Accession 0153698)

A Group for High Resolution Sea Surface Temperature (GHRSST) global Level 4 sea surface temperature analysis produced daily on a 0.25 degree grid at the NOAA National Climatic Data Center. This product uses optimal interpolation (OI) using data from the 4 km Advanced Very High Resolution Radiometer (AVHRR) Pathfinder Version 5 time series (when available, otherwise operational NOAA AVHRR data are used) and in situ ship and buoy observations. A second similar product is available that also includes Advanced Microwave Scanning Radiometer-EOS (AMSR-E) data from June 2002 onward. The OI analysis is a daily average SST that is bias adjusted using a spatially smoothed 7-day in situ SST average and is thus tuned to about 0.3 meter. Both day and night satellite fields are independently bias adjusted. More information is available at http://www.ncdc.noaa.gov/oa/climate/research/sst/oi-daily.php

美国国家海洋和大气管理局（NOAA）国家气候数据中心每日生成的高分辨率海表面温度工作组（Group for High Resolution Sea Surface Temperature, GHRSST）全球四级海表面温度分析产品，采用0.25度网格分辨率。该产品基于最优插值（optimal interpolation, OI）算法，融合4千米分辨率先进甚高分辨率辐射计（Advanced Very High Resolution Radiometer, AVHRR）Pathfinder第五版时间序列数据（若该数据不可用，则改用美国国家海洋和大气管理局业务化AVHRR数据）以及原位船舶与浮标观测数据。另有一款同类产品，自2002年6月起额外纳入先进微波扫描辐射计-地球观测系统（Advanced Microwave Scanning Radiometer-EOS, AMSR-E）观测数据。本次最优插值分析产物为逐日平均海表温度，通过空间平滑的7天原位海表温度平均值完成偏差校正，校准精度约为0.3米。日间与夜间卫星观测场均独立完成偏差校正。更多详细信息可访问http://www.ncdc.noaa.gov/oa/climate/research/sst/oi-daily.php