EMODnet Physics - Sea Level monthly mean, Global Oceans. This product is based, uses and reprocess the CMEMS product id. SEALEVEL_GLO_PHY_CLIMATE_L4_REP_OBSERVATIONS_008_057

SSALTO/DUACS Delayed-Time Level-4 sea surface height and derived variables measured by multi-satellite altimetry observations over Global Ocean.
_NCProperties=version=2,netcdf=4.7.4,hdf5=1.12.0,
CDI=Climate Data Interface version 1.9.8 (https://mpimet.mpg.de/cdi)
cdm_data_type=Grid
CDO=Climate Data Operators version 1.9.8 (https://mpimet.mpg.de/cdo)
comment=Sea Surface Height measured by Altimetry and derived variables
contact=http://climate.copernicus.eu/c3s-user-service-desk
Conventions=CF-1.6, COARDS, ACDD-1.3
Easternmost_Easting=179.875
frequency=mon
geospatial_lat_max=89.875
geospatial_lat_min=-89.875
geospatial_lat_resolution=0.25
geospatial_lat_units=degrees_north
geospatial_lon_max=179.875
geospatial_lon_min=-179.875
geospatial_lon_resolution=0.25
geospatial_lon_units=degrees_east
infoUrl=http://climate.copernicus.eu
institution=CMCC - EMODnet Physics
keywords_vocabulary=GCMD Science Keywords
NCO=netCDF Operators version 4.9.2 (Homepage = http://nco.sf.net, Code = https://github.com/nco/nco)
Northernmost_Northing=89.875
platform=ERS-1, Topex/Poseidon,
processing_level=L4
project=Copernicus Climate Change Service (C3S)
references=http://climate.copernicus.eu
software_version=7.0_DUACS_DT2021_baseline
source=Altimetry measurements
sourceUrl=(local files)
Southernmost_Northing=-89.875
ssalto_duacs_comment=The reference mission used for the altimeter inter-calibration processing is Topex/Poseidon between 1993-01-01 and 2002-04-23, Jason-1 between 2002-04-24 and 2008-10-18, OSTM/Jason-2 between 2008-10-19 and 2016-06-25, Jason-3 since 2016-06-25.
standard_name_vocabulary=CF Standard Name Table v55
time_coverage_duration=P1D
time_coverage_end=2020-12-16T00:00:00Z
time_coverage_resolution=P1D
time_coverage_start=2020-01-16T00:00:00Z
Westernmost_Easting=-179.875

SSALTO/DUACS 滞后时间四级全球海洋海面高度及其派生变量，由多卫星测高观测数据测定。

属性信息：
version=2, netcdf=4.7.4, hdf5=1.12.0
CDI=气候数据接口版本1.9.8 (https://mpimet.mpg.de/cdi)
cdm_data_type=网格
CDO=气候数据操作员版本1.9.8 (https://mpimet.mpg.de/cdo)
comment=由测高仪测定的海面高度及其派生变量
contact=http://climate.copernicus.eu/c3s-user-service-desk
Conventions=CF-1.6, COARDS, ACDD-1.3
Easternmost_Easting=179.875
frequency=月
geospatial_lat_max=89.875
geospatial_lat_min=-89.875
geospatial_lat_resolution=0.25
geospatial_lat_units=北纬度
geospatial_lon_max=179.875
geospatial_lon_min=-179.875
geospatial_lon_resolution=0.25
geospatial_lon_units=东经度
infoUrl=http://climate.copernicus.eu
institution=CMCC - EMODnet 物理学
keywords_vocabulary=GCMD 科学关键词
NCO=netCDF 操作员版本4.9.2 (主页 = http://nco.sf.net, 代码 = https://github.com/nco/nco)
Northernmost_Northing=89.875
platform=ERS-1, Topex/Poseidon
processing_level=L4
project=Copernicus 气候变化服务 (C3S)
references=http://climate.copernicus.eu
software_version=7.0_DUACS_DT2021_baseline
source=测高仪测量数据
sourceUrl=(本地文件)
Southernmost_Northing=-89.875
ssalto_duacs_comment=用于测高仪交叉校准处理的参考任务为1993-01-01至2002-04-23的Topex/Poseidon，2002-04-24至2008-10-18的Jason-1，2008-10-19至2016-06-25的OSTM/Jason-2，自2016-06-25起为Jason-3。
standard_name_vocabulary=CF 标准名称表 v55
time_coverage_duration=P1D
time_coverage_end=2020-12-16T00:00:00Z
time_coverage_resolution=P1D
time_coverage_start=2020-01-16T00:00:00Z
Westernmost_Easting=-179.875