Daily estimated MUR SST v4.1 Frontal edges, x_gradient, y_gradient and gradient magnitude, US Atlantic Coast, 2003-present, Lon0360
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Front Edges estimated from daily Multi-scale Ultra-high Resolution (MUR) Sea Surface Temperature (SST) files using the Python scikit-image canny algorithm with sigma = 10., and threshold values of .8 and .9, as well as the OpenCV algorithm findContours with a minimum length of 20. The SST x-gradient, y-gradient and gradient magnitude are also included cdm_data_type=Grid Conventions=COARDS, CF-1.10, ACDD-1.3 defaultGraphQuery=&.draw=surface&.vars=longitude|latitude|magnitude_gradient&.colorBar=KT_amp|||||&.bgColor=0xffccccff Easternmost_Easting=300.0 geospatial_lat_max=50.0 geospatial_lat_min=20.0 geospatial_lat_resolution=0.01 geospatial_lat_units=degrees_north geospatial_lon_max=300.0 geospatial_lon_min=270.0 geospatial_lon_resolution=0.01 geospatial_lon_units=degrees_east geospatial_vertical_max=0.0 geospatial_vertical_min=0.0 geospatial_vertical_positive=up geospatial_vertical_units=m grid_mapping_earth_radius=6367470.0 grid_mapping_name=latitude_longitude history=created from MUR SST file 20241203090000-JPL-L4_GHRSST-SSTfnd-MUR-GLOB-v02.0-fv04.1.ncusing python scikit-image canny algorithm, sigma = 10, thresholds of 0.8, 0.9 and OpenCV findContours function with minimum length 20 infoUrl=https://www.pfeg.noaa.gov institution=NOAA ERD keywords_vocabulary=GCMD Science Keywords Northernmost_Northing=50.0 sourceUrl=(local files) Southernmost_Northing=20.0 standard_name_vocabulary=CF Standard Name Table v55 testOutOfDate=now-6days time_coverage_end=2024-12-03T00:00:00Z time_coverage_start=2003-01-01T00:00:00Z Westernmost_Easting=270.0
本数据集基于逐日多尺度超高分辨率(Multi-scale Ultra-high Resolution, MUR)海表温度(Sea Surface Temperature, SST)文件,通过Python的scikit-image库Canny边缘检测算法(σ=10.0,阈值设为0.8与0.9)以及OpenCV的findContours轮廓查找算法(最小轮廓长度为20)估算得到锋边线,同时包含海表温度的x方向梯度、y方向梯度以及梯度幅值。 数据类型(cdm_data_type)=Grid 遵循规范(Conventions)=COARDS、CF-1.10、ACDD-1.3 默认图形查询参数(defaultGraphQuery)=&.draw=surface&.vars=longitude|latitude|magnitude_gradient&.colorBar=KT_amp|||||&.bgColor=0xffccccff 最东东向坐标(Easternmost_Easting)=300.0 地理纬度最大值(geospatial_lat_max)=50.0 地理纬度最小值(geospatial_lat_min)=20.0 地理纬度分辨率(geospatial_lat_resolution)=0.01 地理纬度单位(geospatial_lat_units)=北纬度 地理经度最大值(geospatial_lon_max)=300.0 地理经度最小值(geospatial_lon_min)=270.0 地理经度分辨率(geospatial_lon_resolution)=0.01 地理经度单位(geospatial_lon_units)=东经度 垂直方向最大值(geospatial_vertical_max)=0.0 垂直方向最小值(geospatial_vertical_min)=0.0 垂直方向正方向(geospatial_vertical_positive)=向上 垂直方向单位(geospatial_vertical_units)=米 网格映射地球半径(grid_mapping_earth_radius)=6367470.0 网格映射名称(grid_mapping_name)=纬度-经度坐标系 生成历史(history)=本数据集源自MUR SST文件20241203090000-JPL-L4_GHRSST-SSTfnd-MUR-GLOB-v02.0-fv04.1.nc,通过Python scikit-image库Canny算法(σ=10,阈值为0.8、0.9)及OpenCV findContours函数(最小轮廓长度为20)生成 信息访问地址(infoUrl)=https://www.pfeg.noaa.gov 所属机构(institution)=美国国家海洋和大气管理局环境研究实验室(NOAA ERD) 关键词词表(keywords_vocabulary)=GCMD科学关键词 最北北向坐标(Northernmost_Northing)=50.0 数据源(sourceUrl)=本地文件 最南北向坐标(Southernmost_Northing)=20.0 标准名称词表(standard_name_vocabulary)=CF标准名称表v55 数据过期测试阈值(testOutOfDate)=当前时间向前推6天 时间覆盖终止时刻(time_coverage_end)=2024-12-03T00:00:00Z 时间覆盖起始时刻(time_coverage_start)=2003-01-01T00:00:00Z 最西东向坐标(Westernmost_Easting)=270.0



