本数据集是北半球逐日无云二值积雪产品资料，时间自2000年1月至2015年12月，数据包含了积雪和非雪两种地物类型。数据覆盖范围为0-86°N，180°W-180°E。该数据集的数据源使用的积雪产品是通过NSIDC网站下载的V005版本的每日积雪分类产品MOD10A1和MYD10A1，以及AMSR-E每日雪水当量产品和雪冰产品IMS。利用MOD10A1、MYD10A1、AMSR-E AWE和IMS原始数据，采用最大积雪面积融合方法，生成逐日无云二值积雪图像。
\n\n", "ds_source": "数据来自课题：国家重大科学研究计划“冰冻圈变化及其影响研究”\n负责人:丁永建\n单位：中国科学院寒区旱区环境与工程研究所\n资助者：科技部\n数据源使用的积雪产品是通过NSIDC网站下载的V005版本的每日积雪分类产品MOD10A1和MYD10A1，以及AMSR-E每日雪水当量产品和雪冰产品IMS。
", "ds_process_way": "利用MOD10A1、MYD10A1、AMSR-E AWE和IMS原始数据，采用最大积雪面积融合方法，生成逐日无云二值积雪图像\n(1)数据生产过程:使用专门的图形工作站进行数据处理过程\n(2)方法和标准规范: 采用最大积雪面积融合方法\n(3)应用范围: 北半球\n
", "ds_quality": "该数据的原始数据为通过NSIDC网站下载的V005版本的每日积雪分类产品MOD10A1和MYD10A1，以及AMSR-E每日雪水当量产品数据，采用最大积雪面积融合方法，生成北半球逐日无云二值积雪产品，加工生成后的数据分辨率达到500m×500m。对合成的最终逐日积雪产品精度分析表明，积雪一致性达到87.1%，陆地一致性达到92%，总体分类精度为90.7%。
", "ds_acq_start_time": "2000-01-01 00:00:00", "ds_acq_end_time": "2015-12-31 00:00:00", "ds_acq_place": "北半球", "ds_acq_lon_east": 180.0, "ds_acq_lat_south": 0.0, "ds_acq_lon_west": 180.0, "ds_acq_lat_north": 86.0, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "apply-access", "ds_total_size": 67336709161, "ds_files_count": 18, "ds_format": "栅格数据", "ds_space_res": "1km*1km", "ds_time_res": "年", "ds_coordinate": "无", "ds_projection": "GCS_WGS_1984", "ds_thumbnail": "daec254a-4434-4e17-b770-2ea8effd50da.png", "ds_thumb_from": 0, "ds_ref_way": "黄晓东，2000-2015年MODIS北半球逐日无云二值积雪产品，国家冰川冻土沙漠科学数据中心(www.ncdc.ac.cn)，2020，doi：10.12072/ncdc.CCI.db0044.2020", "paper_ref_way": "", "ds_ref_instruction": "由于本数据集测定时间不尽一致，指标繁杂，如需要详细原始数据者，请联系数据管理者。\n 联系信息：\n 联系人姓名：黄晓东\n Email: huangxd@lzu.edu.cn \n Tel: 0931-8912896\n", "ds_from_station": null, "organization_id": "b3c14ec7-0cc1-417f-8986-b6fc1352242f", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": null, "quality_level": 3, "publish_time": "2020-12-03 08:55:15", "last_updated": "2025-12-13 16:02:30", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.CCI.2020.72", "i18n": { "en": { "title": "MODIS daily cloudless binary snow products in Northern Hemisphere from 2000 to 2015", "ds_format": "", "ds_source": "", "ds_quality": "", "ds_ref_way": "", "ds_abstract": "", "ds_time_res": "年", "ds_acq_place": "Northern Hemisphere", "ds_space_res": "1km*1km", "ds_projection": "", "ds_process_way": "", "ds_ref_instruction": " " } }, "submit_center_id": "ncdc", "data_level": 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, "ds_topic_tags": [ "北半球", "无云", "积雪" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "北半球" ], "ds_time_tags": [ 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015 ], "ds_contributors": [ { "true_name": "黄晓东", "email": "huangxd@lzu.edu.cn", "work_for": "兰州大学草地农业科技学院", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "黄晓东", "email": "huangxd@lzu.edu.cn", "work_for": "兰州大学草地农业科技学院", "country": "中国" } ], "ds_managers": [ { "true_name": "黄晓东", "email": "huangxd@lzu.edu.cn", "work_for": "兰州大学草地农业科技学院", "country": "中国" } ], "category": "积雪" }