{
    "created": "2018-04-23 07:47:20",
    "updated": "2026-06-06 08:08:43",
    "id": "6bdfe932-8c3e-4747-9600-33e578aaf12d",
    "version": 3,
    "ds_topic": null,
    "title_cn": "中国地区MODIS雪盖产品数据集",
    "title_en": "MODIS Snow Cover Products Dataset in China",
    "ds_abstract": "<p>该数据集为2000年2月24日至2004年12月31日，分辨率为0.05度，MODIS数据，数据格式为.hdf，可以用HDFView打开，数据质量良好，缺失的日期如下：2000年 1-54 132 219-230 303 2001年 111 167-182 2002年 079－086 099 105 2003年 123 324 351-358 2004年 219 349 其中年后面的数字为该年的第n天。</p>\n\n<p>Pixel values are as follows:</p>\n\n<p>0: Snow-free land 1-100: Percent snow in cell</p>\n\n<p>111: Night</p>\n\n<p>252: Antarctica</p>\n\n<p>253: Data not mapped</p>\n\n<p>254: Open water (ocean)</p>\n\n<p>255: Fill</p>\n\n<p>文件命名举例如下：</p>\n\n<p>Example: \"MOD10C1.A2003121.004.2003142152431.hdf\"</p>\n\n<p>Where:</p>\n\n<p>MOD = MODIS/Terra</p>\n\n<p>2003 = Year of data acquisition</p>\n\n<p>121 = Julian date of data acquisition (day 121)</p>\n\n<p>004 = Version of data type (Version 4)</p>\n\n<p>2003 = Year of production (2003)</p>\n\n<p>142 = Julian date of production (day 142)</p>\n\n<p>152431 = Hour/minute/second of production in GMT (15:24:31)</p>\n\n<p>角点坐标为：</p>\n\n<p>Corner Coordinates:</p>\n\n<p>Upper Left ( 70.0000000, 54.0000000)</p>\n\n<p>Lower Left ( 70.0000000, 3.0000000)</p>\n\n<p>Upper Right ( 138.0000000, 54.0000000)</p>\n\n<p>Lower Right ( 138.0000000, 3.0000000)</p>\n\n<p>其中Upper Left 为左上角，Lower Left 为左下角，Upper Right 为右上角，Lower Right 为右下角。</p>\n\n<p>数据行列数分别为 1360, 1020</p>\n\n<p>地理经纬度坐标，具体信息如下：</p>\n\n<p>Coordinate System is:</p>\n\n<p>GEOGCS[\"Unknown datum based upon the Clarke 1866 ellipsoid\",</p>\n\n<p>DATUM[\"Not specified (based on Clarke 1866 spheroid)\",</p>\n\n<p>SPHEROID[\"Clarke 1866\",6378206.4,294.9786982139006,</p>\n\n<p>AUTHORITY[\"EPSG\",\"7008\"]]],</p>\n\n<p>PRIMEM[\"Greenwich\",0],</p>\n\n<p>UNIT[\"degree\",0.0174532925199433]]</p>\n\n<p>Origin = (70.000000000000000,54.000000000000000)</p>",
    "ds_source": "<p>自主生产（仪器采集）</p>",
    "ds_process_way": "<p>仪器自动观测 人工统计数据</p>",
    "ds_quality": "<p>数据集通过严格的人工审核控制质量</p>",
    "ds_acq_start_time": "2001-02-24 00:00:00",
    "ds_acq_end_time": "2004-03-21 00:00:00",
    "ds_acq_place": "中国",
    "ds_acq_lon_east": 135.5,
    "ds_acq_lat_south": 17.766666666666666,
    "ds_acq_lon_west": 73.19972222222222,
    "ds_acq_lat_north": 53.86666666666667,
    "ds_acq_alt_low": null,
    "ds_acq_alt_high": null,
    "ds_share_type": "login-access",
    "ds_total_size": 190625149,
    "ds_files_count": 3,
    "ds_format": "HDF",
    "ds_space_res": "5000.0m",
    "ds_time_res": "",
    "ds_coordinate": "WGS84",
    "ds_projection": "",
    "ds_thumbnail": "6bdfe932-8c3e-4747-9600-33e578aaf12d.png",
    "ds_thumb_from": 0,
    "ds_ref_way": "",
    "paper_ref_way": "",
    "ds_ref_instruction": "None",
    "ds_from_station": null,
    "organization_id": "9c4867b1-5cb1-4de0-abeb-df42547bf41e",
    "ds_serv_man": "李红星",
    "ds_serv_phone": "0931-4967287",
    "ds_serv_mail": "westdc@lzb.ac.cn",
    "doi_value": "",
    "subject_codes": [
        "170.4510"
    ],
    "quality_level": 3,
    "publish_time": "2020-03-26 17:35:07",
    "last_updated": "2023-08-23 16:46:34",
    "protected": false,
    "protected_to": null,
    "lang": "zh",
    "cstr": "11738.11.ncdc.Westdc.2020.309",
    "i18n": {
        "en": {
            "title": "MODIS Snow Cover Products Dataset in China",
            "ds_format": "HDF",
            "ds_source": "<p>Self production (instrument acquisition)</p>",
            "ds_quality": "<p>Data set quality control through strict manual audit</p>",
            "ds_ref_way": "",
            "ds_abstract": "<p>The data set is from February 24, 2000 to December 31, 2004, with a resolution of 0.05 degrees. MODIS data, with a data format of. HDF, can be opened with hdfview. The data quality is good. The missing dates are as follows: 2000：1-54, 132, 219-230, 303, 2001：111, 167-182, 2002：079-086, 099, 105, 2003：123, 324, 351-358, 2004：219, 349. The number after middle age is the nth day of the year</p>\n<p>Pixel values are as follows:</p>\n<p>0: Snow-free land 1-100: Percent snow in cell</p>\n<p>111: Night</p>\n<p>252: Antarctica</p>\n<p>253: Data not mapped</p>\n<p>254: Open water (ocean)</p>\n<p>255: Fill</p>\n<p>An example of file naming is as follows:</p>\n<p>Example: \"MOD10C1.A2003121.004.2003142152431.hdf\"</p>\n<p>Where:</p>\n<p>MOD = MODIS/Terra</p>\n<p>2003 = Year of data acquisition</p>\n<p>121 = Julian date of data acquisition (day 121)</p>\n<p>004 = Version of data type (Version 4)</p>\n<p>2003 = Year of production (2003)</p>\n<p>142 = Julian date of production (day 142)</p>\n<p>152431 = Hour/minute/second of production in GMT (15:24:31)</p>\n<p>The corner coordinates are:</p>\n<p>Corner Coordinates:</p>\n<p>Upper Left ( 70.0000000, 54.0000000)</p>\n<p>Lower Left ( 70.0000000, 3.0000000)</p>\n<p>Upper Right ( 138.0000000, 54.0000000)</p>\n<p>Lower Right ( 138.0000000, 3.0000000)</p>\n<p>Where upper left is the upper left corner, lower left is the lower left corner, upper right is the upper right corner, and lower right is the lower right corner. </p>\n<p>The number of data rows and columns is 1360 and 1020 respectively</p>\n<p>Geographic longitude and latitude coordinates, the specific information is as follows:</p>\n<p>Coordinate System is:</p>\n<p>GEOGCS[\"Unknown datum based upon the Clarke 1866 ellipsoid\",</p>\n<p>DATUM[\"Not specified (based on Clarke 1866 spheroid)\",</p>\n<p>SPHEROID[\"Clarke 1866\",6378206.4,294.9786982139006,</p>\n<p>AUTHORITY[\"EPSG\",\"7008\"]]],</p>\n<p>PRIMEM[\"Greenwich\",0],</p>\n<p>UNIT[\"degree\",0.0174532925199433]]</p>\n<p>Origin = (70.000000000000000,54.000000000000000)</p>",
            "ds_time_res": "",
            "ds_acq_place": "China",
            "ds_space_res": "5000.0m",
            "ds_projection": "",
            "ds_process_way": "<p>Instrument automatic observation manual statistics</p>",
            "ds_ref_instruction": "In order to respect intellectual property rights, protect the rights and interests of data authors, expand the services of data centers, and evaluate the application potential of data, data users are invited to use the data.Students' research results (including published papers, treatises, data products and unpublished research reports, data products, etc.) shall be clearly indicated with data source and data author. For data reprinted (secondary or multiple releases), the author must also indicate the source of the original data. The results published in Chinese refer to the following specifications:\r\nThe data comes from the \"Data Center for environmental and Ecological Sciences in Western China\" (http://westdc.westgis.ac.cn) published by the National Natural Science Foundation of China\r\nThe data set is provided by environmental and Ecological Science Data Center for West\r\nChina,National Natural Science Foundation of China (http://westdc.westgis.ac.cn)"
        }
    },
    "submit_center_id": "ncdc",
    "data_level": 0,
    "recommendation_value": 0,
    "license_type": "https://creativecommons.org/licenses/by/4.0/",
    "doi_reg_from": "reg_local",
    "cstr_reg_from": "reg_local",
    "doi_not_reg_reason": null,
    "cstr_not_reg_reason": null,
    "is_paper_in_submitting": false,
    "belong_to_nieer": false,
    "ds_topic_tags": [
        "MODIS",
        "逐日雪盖"
    ],
    "ds_subject_tags": [
        "自然地理学"
    ],
    "ds_class_tags": [],
    "ds_locus_tags": [
        "中国"
    ],
    "ds_time_tags": [
        2000,
        2001,
        2002,
        2004
    ],
    "ds_contributors": [
        {
            "true_name": "车涛",
            "email": "chetao@lzb.ac.cn",
            "work_for": "中国科学院西北生态环境资源研究院",
            "country": "中国"
        }
    ],
    "ds_meta_authors": [
        {
            "true_name": "敏玉芳",
            "email": "myf@lzb.ac.cn",
            "work_for": "中国科学院西北生态环境资源研究院",
            "country": "中国"
        },
        {
            "true_name": "吴立宗",
            "email": "wulizong@pric.org.cn",
            "work_for": "国家极地科学数据中心",
            "country": "中国"
        }
    ],
    "ds_managers": [
        {
            "true_name": "车涛",
            "email": "chetao@lzb.ac.cn",
            "work_for": "中国科学院西北生态环境资源研究院",
            "country": "中国"
        }
    ],
    "category": "遥感及产品"
}