Mapset: Sea Surface Temperature Quarterly and Overall Means in the Northern Marine Region

Map showing sea surface temperature quarterly and overall means in the Northern Marine region. The CSIRO Marine Research Remote Sensing facility automatically receives and archives data from the USA's National Oceanographic and Atmospheric Administration (NOAA) satellites. Up to 18 passes per day are tracked to receive data. The Advanced Very High Resolution Radiometer (AVHRR) data is received on the High Resolution Picture Transmission (HRPT) signal. Within an hour of reception, these data are automatically processed into full resolution sea surface temperature (SST) images. Raw data originate from the AVHRR sensor on various NOAA polar orbiting satellites, received at various stations around Australia and consolidated ("stitched") by the CSIRO Earth Observation Centre. The stitching removes redundancy and minimises data corruption. Processing from the stitched archive to produce SST is carried out in the CMR Remote Sensing Facility in Hobart using the split window algorithm of McMillin for NOAA9 and NOAA12 satellites and the NLSST (NOAA non-linear SST) algorithm for the other satellites. Cloud-clearing is performed based on the algorithm of Saunders and Kriebel. Each map is made by combining the estimates over the composite period using a time and spatial neighbourhood median filtering method. Each pixel of the images is the 65 percentile of all cloud-cleared SST estimates during the composite period and within a 4x4 km region. The compositing process also removes most residual cloud contamination. This map has been produced by CSIRO for the National Oceans Office, as part of an ongoing commitment to natural resource planning and management through the 'National Marine Bioregionalisation' project.

本地图展示了北部海域季度及整体平均海表温度（Sea Surface Temperature, SST）分布情况。澳大利亚联邦科学与工业研究组织（Commonwealth Scientific and Industrial Research Organisation, CSIRO）海洋研究遥感设施可自动接收并存档美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration, NOAA）卫星传回的数据，每日最多可追踪18次卫星过境以获取数据。该设施通过高分辨率图像传输（High Resolution Picture Transmission, HRPT）信号接收先进甚高分辨率辐射计（Advanced Very High Resolution Radiometer, AVHRR）数据。数据接收后一小时内，这些数据将被自动处理为全分辨率海表温度图像。原始数据源自搭载于多颗美国国家海洋和大气管理局极轨卫星的先进甚高分辨率辐射计传感器，由澳大利亚境内多个站点接收，并由澳大利亚联邦科学与工业研究组织地球观测中心进行整合（即“拼接”）处理。该拼接流程可去除数据冗余并最大限度降低数据损坏风险。基于拼接后的存档数据生成海表温度图像的处理流程，在位于霍巴特的CMR遥感设施中开展：针对NOAA-9与NOAA-12卫星，采用McMillin提出的分裂窗算法；针对其余卫星，则采用NLSST（NOAA非线性海表温度）算法。云掩膜剔除流程基于Saunders与Kriebel提出的算法实现。每张地图均通过时空邻域中值滤波法，对合成周期内的温度估算值进行融合生成。图像中的每个像素值，为合成周期内、4×4公里区域范围内所有经云掩膜剔除的海表温度估算值的65百分位数。该合成流程还可去除大部分残留云污染。本地图由澳大利亚联邦科学与工业研究组织为国家海洋办公室制作，作为其通过“国家海洋生物区划”项目持续推进自然资源规划与管理工作的一部分。