GHRSST Level 2P Global Sea Surface Skin Temperature from the Visible and Infrared Imager/Radiometer Suite (VIIRS) on the Suomi-NPP satellite (GDS2)

These files contain NASA produced skin sea surface temperature (SST) products from the Infrared (IR) channels of the Visible and Infrared Imager/Radiometer Suite (VIIRS) onboard the Suomi-NPP satellite. VIIRS is a multi-disciplinary instrument that is also being flown on the Joint Polar Satellite System (JPSS) series of spacecraft, of which NOAA-20 is the first. JPSS is a multi-agency program that consolidates the polar orbiting spacecraft of NASA and the National Oceanic and Atmospheric Administration (NOAA). Suomi-NPP is the initial spacecraft in this series, and VIIRS is the successor to MODIS for Earth science data. VIIRS has 22 spectral bands ranging from 412 nm to 12 micron . There are 16 moderate-resolution bands (750m at nadir), 5 image-resolution bands (375 m), and one day-night band (DNB). VIIRS uses on-board pixel aggregation to reduce the growth in size of pixels away from nadir. Two SST products are contained in these files. The first is a skin SST produced separately for day and night observations, derived from the long wave IR 11 and 12 micron wavelength channels, using a modified nonlinear SST algorithm intended to provide continuity of SST products from heritage and current NASA sensors. At night, a second triple channel SST product is generated using the 3.7 , 11 and 12 micron IR channels, identified as SST_triple. Due to the sun glint in the 3.7 micron SST_triple can only be used at night. VIIRS L2P SST data have a 750 spatial resolution at nadir and are stored in ~288 five minute granules per day. Full global coverage is obtained each day. The production of VIIRS NASA L2P SST files is part of the Group for High Resolution Sea Surface Temperature (GHRSST) project and is a joint collaboration between the NASA Jet Propulsion Laboratory (JPL), the NASA Ocean Biology Processing Group (OBPG), and the Rosenstiel School of Marine and Atmospheric Science (RSMAS). Researchers at RSMAS were responsible for sea surface temperature algorithm development, error statistics and quality flagging, while the OBPG, as the NASA ground data system, is responsible for the production of VIIRS ocean products. JPL acquires VIIRS ocean granules from the OBPG and reformats them to the GHRSST L2P netCDF specification with complete metadata and is the official Physical Oceanography Data Archive (PO.DAAC) for SST. In mid-August, 2018, the RSMAS involvement in the VIIRS SST project ceased, and the subsequent fields are not maintained.The R2016.2 supersedes the previous v2016.0 datasets which can be found at https://doi.org/10.5067/GHVRS-2PN16

本数据集包含美国国家航空航天局（NASA）基于Suomi-NPP卫星搭载的可见光与红外成像仪/辐射计套装（VIIRS）的红外（IR）通道所生成的皮肤海表温度（SST）产品。VIIRS是一种多学科仪器，亦搭载于联合极地卫星系统（JPSS）系列航天器，其中NOAA-20为其首颗。JPSS是一个多机构项目，旨在整合美国国家航空航天局（NASA）和美国国家海洋与大气管理局（NOAA）的极地轨道航天器。Suomi-NPP是该系列的首个航天器，VIIRS亦为地球科学数据的MODIS继任者。VIIRS拥有22个光谱波段，波长范围从412纳米至12微米。其中包括16个中分辨率波段（视场中心750米），5个图像分辨率波段（375米）以及一个昼夜波段（DNB）。VIIRS利用机载像素聚合技术以减少非视场中心像素大小的增加。这些文件包含两种SST产品。第一种是为白天和夜间观测分别生成的皮肤SST，通过修改的非线性SST算法，从长波红外11和12微米波长通道中提取，旨在确保从NASA传统传感器和当前传感器所生成的SST产品的连续性。夜间，利用3.7微米、11和12微米红外通道生成第二种三通道SST产品，标记为SST_triple。由于3.7微米SST_triple存在太阳光反射问题，因此仅在夜间使用。VIIRS L2P SST数据在视场中心具有750米的空间分辨率，并存储在每天约288个五分钟粒度的数据块中，实现每日全球覆盖。VIIRS NASA L2P SST文件的生成是高分辨率海表温度（GHRSST）项目的一部分，并由NASA喷气推进实验室（JPL）、NASA海洋生物学处理组（OBPG）和罗森斯蒂尔海洋与大气科学学院（RSMAS）共同合作完成。RSMAS的研究人员负责海表温度算法的开发、误差统计和质量标记，而OBPG作为NASA地面数据系统，负责VIIRS海洋产品的生产。JPL从OBPG获取VIIRS海洋数据块，并重新格式化为GHRSST L2P netCDF规范，包含完整元数据，并作为官方物理海洋学数据档案（PO.DAAC）的SST。2018年8月中旬，RSMAS在VIIRS SST项目中的参与终止，后续字段未再维护。R2016.2版本取代了之前的v2016.0数据集，可通过以下链接找到：https://doi.org/10.5067/GHVRS-2PN16

搜集汇总

背景与挑战

背景概述

该数据集提供全球海表皮肤温度（SST）数据，源自Suomi-NPP卫星上的VIIRS仪器红外通道，包含日间和夜间皮肤SST以及夜间三通道SST产品，空间分辨率为750米，每天实现全球覆盖。它是GHRSST项目的一部分，由NASA JPL、OBPG和RSMAS合作开发，但RSMAS在2018年8月后已停止参与更新。