GHRSST Level 4 REMO_OI_SST_5km Regional Foundation Sea Surface Temperature Analysis (GDS version 2) for 2016-02-22 (NCEI Accession 0154458)

A Group for High Resolution Sea Surface Temperature (GHRSST) Level 4 sea surface temperature (SST) analysis produced daily on an operational basis by the Oceanographic Modeling and Observation Network (REMO) at Applied Meteorology Laboratory/Federal University of Rio de Janeiro (LMA/UFRJ) using the Barnes sub optimal interpolation (OI) technique on a regional 0.05 degree grid. REMO uses Advanced Very High Resolution Radiometer (AVHRR) data from National Oceanic and Atmospheric Administration (NOAA) satellites series (NOAA 15, NOAA 16, NOAA 17, NOAA 18 and NOAA 19) and Microwave Imager (TMI) data from Tropical Rainfall Measuring Mission (TRMM) which is a joint mission between NASA and the Japan Aerospace Exploration Agency (JAXA) to generate 0.05 degree daily cloud free blended (infrared and microwave) SST products (approximately 5.5 km). The data lies between latitudes 45 S and 15 N and longitudes 70 W and 15 W region and are fully validated by in situ measurements from eleven buoys of Prediction and Research Moored Array in the Tropical Atlantic (PIRATA).AVHRR is a scanning radiometer capable of detecting energy from land, ocean and atmosphere. It operates with six spectral bands arranged in the regions of visible and infrared region. TRMM was launched in December, 1997, having an orbital inclination of 53 degree and altitude 350 km, an equatorial orbit that ranges from 40 N to 40 S and a spatial resolution of 0.25 degree (∼27.75 km). Although infrared AVHRR SST data have high spatial resolution, they are contaminated by cloud cover and aerosols, while lower resolution microvwave TMI data are barely influenced by these.

高分辨率海表温度工作组（Group for High Resolution Sea Surface Temperature，GHRSST）第四级海表温度（Sea Surface Temperature，SST）分析产品，由里约热内卢联邦大学应用气象实验室（Applied Meteorology Laboratory/Federal University of Rio de Janeiro，LMA/UFRJ）下属的海洋建模与观测网络（Oceanographic Modeling and Observation Network，REMO）以业务化模式每日生成，其采用Barnes次优插值（sub optimal interpolation，OI）技术，在0.05°分辨率的区域网格上完成计算。

REMO使用美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration，NOAA）系列卫星（NOAA 15、NOAA 16、NOAA 17、NOAA 18及NOAA 19）搭载的先进甚高分辨率辐射计（Advanced Very High Resolution Radiometer，AVHRR）数据，以及由美国国家航空航天局（National Aeronautics and Space Administration，NASA）与日本宇宙航空研究开发机构（Japan Aerospace Exploration Agency，JAXA）联合实施的热带降雨测量任务（Tropical Rainfall Measuring Mission，TRMM）搭载的微波成像仪（Microwave Imager，TMI）数据，最终生成0.05°分辨率的每日无云融合（红外与微波）海表温度产品，空间分辨率约为5.5 km。

该数据集覆盖纬度45°S至15°N、经度70°W至15°W的海域，并通过热带大西洋预测与研究锚定浮标阵列（Prediction and Research Moored Array in the Tropical Atlantic，PIRATA）的11个浮标获取的原位测量数据完成全面验证。

先进甚高分辨率辐射计（Advanced Very High Resolution Radiometer，AVHRR）是一种可探测陆地、海洋与大气辐射能量的扫描辐射计，配备6个分布于可见光及红外波段的光谱通道。

热带降雨测量任务（Tropical Rainfall Measuring Mission，TRMM）于1997年12月发射，轨道倾角为53°，轨道高度350 km，属于赤道轨道，覆盖范围为40°N至40°S，空间分辨率为0.25°（约27.75 km）。

尽管红外波段AVHRR海表温度数据具备较高空间分辨率，但易受云覆盖与气溶胶污染；而分辨率较低的微波TMI数据则几乎不受此类因素影响。