Spatial correlation length scales of sea-ice concentration errors of high-concentration pack ice for Eumetsat OSI SAF product OSI-450

<strong>Abstract:</strong> Spatial correlation length scales derived from Eumetsat OSI SAF OSI-450 sea-ice concentration data products at 25.0km grid resolution based on SSM/I and SSMIS brightness temperature measurements for the period January 2002 through December 2011.

<strong>TableOfContents:</strong> sea_ice_area_fraction_error_correlation_length; total_standard_error_correlation_length; minimum_rmsd_for_sea_ice_area_fraction_correlation_length; minimum_rmsd_for_total_standard_error_correlation_length; surface_type_flag

<strong>Technical Info:</strong> dimensions: 432 columns x 432 rows x unlimited; temporalExtent_startDate: 2002-01-01; temporalExtent_endDate: 2011-12-31; temporalResolution: daily; spatialResolution: 25.0; spatialResolutionUnit: km; horizontalResolutionXdirection: 25.0; horizontalResolutionXdirectionUnit: km; horizontalResolutionYdirection: 25.0; horizontalResolutionYdirectionUnit: km; verticalResolution: none; verticalResolutionUnit: none; verticalStart: none; verticalEnd: none; instrumentName: Special Sensor Microwave / Imager (SSM/I), Special Sensor Microwave Imager / Sounder (SSMIS); instrumentType: multi-channel microwave radiometer; instrumentLocation: NOAA/NASA DMSP; instrumentProvider: NOAA/NASA; License: CC-BY-SA-NC-4.0

<strong>Methods:</strong> See Kern, S., Spatial correlation length scales of sea-ice concentration errors of high-concentration pack ice, Remote Sensing, 13(21), 4421, 2021, https://doi.org/10.3390/rs13214421

<strong>Units:</strong> units for all variables (see TableOfContents): km,km,1,1,1

<strong>geoLocations:</strong>

NorthernHemisphere: westBoundLongitude: -180.0 degrees East; eastBoundLongitude: 180.0 degrees East; southBoundLongitude: 16.62393 degrees North; northBoundLongitude: 90.0 degrees North; geoLocationPlace: northernHemisphere

SouthernHemisphere: westBoundLongitude: -180.0 degrees East; eastBoundLongitude: 180.0 degrees East; southBoundLongitude: -90.0 degrees North; northBoundLongitude: -16.62393 degrees North; geoLocationPlace: southernHemisphere

<strong>Size:</strong> 730 (leap year 732) files per year, one for each hemisphere, ~4.67 MegaBype per file, ~3.3295 GigaByte per year, ~33.295 GigaByte in total (provided as annual zip archives for each hemisphere = 20 files)

<strong>Format: </strong>netCDF

<strong>DataSources:</strong> EUMETSAT Ocean and Sea Ice Satellite Application Facility. (OSI SAF) Global sea ice concentration climate data record 1979-2015 (v2.0, 2017). Norwegian and Danish Meteorological Institutes. Available from osisaf.met.no., doi.org/10.15770/EUM_SAF_OSI_0008 [last accessed January 18 2022].

<strong>Contact:</strong> stefan.kern (at) uni-hamburg.de

**摘要：** 本数据集基于2002年1月至2011年12月的专用传感器微波成像仪（SSM/I）与专用传感器微波成像仪/测声仪（SSMIS）亮温观测数据，由空间分辨率为25.0km的欧洲气象卫星组织（EUMETSAT）海洋与海冰卫星应用设施（OSI SAF）OSI-450海冰密集度数据产品衍生得到，包含空间相关长度尺度信息。

**目录：** 海冰面积占比误差相关长度、总标准误差相关长度、海冰面积占比最小均方根误差相关长度、总标准误差最小均方根误差相关长度、地表类型标识

**技术信息：** 维度：432列×432行×无限制；时间范围起始日期：2002-01-01；时间范围结束日期：2011-12-31；时间分辨率：逐日；空间分辨率：25.0；空间分辨率单位：km；X方向水平分辨率：25.0；X方向水平分辨率单位：km；Y方向水平分辨率：25.0；Y方向水平分辨率单位：km；垂直分辨率：无；垂直分辨率单位：无；垂直起始值：无；垂直结束值：无；仪器名称：专用传感器微波成像仪（SSM/I）、专用传感器微波成像仪/测声仪（SSMIS）；仪器类型：多通道微波辐射计；仪器搭载平台：NOAA/NASA国防气象卫星计划（DMSP）；仪器提供方：NOAA/NASA；授权协议：CC-BY-SA-NC-4.0

**研究方法：** 详见Kern, S.《高浓度浮冰海冰密集度误差的空间相关长度尺度》，《遥感》，13(21), 4421, 2021, https://doi.org/10.3390/rs13214421

**单位：** 所有变量（详见目录）的单位依次为：km、km、无量纲、无量纲、无量纲

**地理范围：**
北半球：西边界经度：-180.0°东经；东边界经度：180.0°东经；南边界纬度：16.62393°北纬；北边界纬度：90.0°北纬；地理区域：北半球
南半球：西边界经度：-180.0°东经；东边界经度：180.0°东经；南边界纬度：-90.0°北纬；北边界纬度：-16.62393°北纬；地理区域：南半球

**数据规模：** 每年共730个文件（闰年为732个），每个半球对应一个文件，单文件大小约4.67兆字节，单年总容量约3.3295吉字节，总容量约33.295吉字节（数据以每个半球的年度压缩包形式提供，共20个压缩包）

**数据格式：** netCDF

**数据来源：** 欧洲气象卫星组织（EUMETSAT）海洋与海冰卫星应用设施（OSI SAF）：《1979-2015年全球海冰密集度气候数据集（v2.0, 2017）》；挪威与丹麦气象研究所。数据可从osisaf.met.no获取，doi.org/10.15770/EUM_SAF_OSI_0008 [最后访问时间：2022年1月18日]

**联系方式：** stefan.kern (at) uni-hamburg.de