此数据集中包括了南极和格陵兰冰盖高程变化的数据，数据时间从1992到2016年，利用Grace卫星资料获得南极和格陵兰冰盖高程变化。数据覆盖整个南极和格陵兰冰盖，投影方式采用GCS_WGS_1984。", "ds_source": "
数据是从欧空局下载，主要包括了ers1 ers2 envisat cryosat2，具体网址为http://www.esa.int/ESA
", "ds_process_way": "研究采用卫星测高交叉点算法估算高程变化时间序列。
", "ds_quality": "计算前，从卫星测高的各项观测量和改正量中检测数据的可靠性，剔除不合格的产品；计算过程中，通过数据拟合，反演计算影响高程值的相关参数，并改正非相关量，利用残差判断是否观测值有效，循环剔除，直到所有数据均有效。
\n", "ds_acq_start_time": "1992-01-01 00:00:00", "ds_acq_end_time": "2015-12-31 00:00:00", "ds_acq_place": "南极和格陵兰冰盖", "ds_acq_lon_east": null, "ds_acq_lat_south": 66.5, "ds_acq_lon_west": 180.0, "ds_acq_lat_north": 90.0, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "apply-access", "ds_total_size": 878547242, "ds_files_count": 3, "ds_format": "txt", "ds_space_res": "1km*1km", "ds_time_res": "年", "ds_coordinate": "无", "ds_projection": "GCS_WGS_1984", "ds_thumbnail": "3907ec3e-e82a-404c-aabb-a81448fa8771.png", "ds_thumb_from": 0, "ds_ref_way": "杨元德，1992-2015年南极和格林兰冰盖高程变化数据集，国家冰川冻土沙漠科学数据中心(www.ncdc.ac.cn)，2020，doi：10.12072/ncdc.CCI.db0031.2020", "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：杨元德 \n Email: yuandeyang@whu.edu.cn \n Tel: 13908622683\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 08:55:57", "last_updated": "2021-01-04 11:00:20", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.CCI.2020.69", "i18n": { "en": { "title": "Data set of ice sheet elevation change from 1992 to 2015", "ds_format": "", "ds_source": "The data is downloaded from ESA, mainly including ers1 ers2 ENVISAT cryosat2, and the specific website is http://www.esa.int/ESA
", "ds_quality": "Before the calculation, the reliability of the data is tested from the observation and correction of satellite altimetry, and the unqualified products are eliminated; in the calculation process, the relevant parameters affecting the elevation value are inversely calculated through data fitting, and the uncorrelated quantities are corrected, and the residual is used to judge whether the observation value is valid, and the circular elimination is carried out until all the data are valid.
\n", "ds_ref_way": "", "ds_abstract": "This data set includes the data of Antarctic and Greenland ice sheet elevation changes from 1992 to 2016. Grace satellite data are used to obtain the Antarctic and Greenland ice sheet elevation changes. The data cover the whole Antarctic and Greenland ice sheets, and the projection method is GCs_ WGS_ 1984。
", "ds_time_res": "年", "ds_acq_place": "Antarctic and Greenland ice sheets", "ds_space_res": "1km*1km", "ds_projection": "", "ds_process_way": "In this paper, the cross point algorithm of satellite altimetry is used to estimate the time series of elevation change.
", "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": [ "南极和格陵兰冰盖", "高程变化", "Grace卫星" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "南极，格陵兰岛" ], "ds_time_tags": [ 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015 ], "ds_contributors": [ { "true_name": "杨元德", "email": "yuandeyang@whu.edu.cn", "work_for": "武汉大学", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "杨元德", "email": "yuandeyang@whu.edu.cn", "work_for": "武汉大学", "country": "中国" } ], "ds_managers": [ { "true_name": "杨元德", "email": "yuandeyang@whu.edu.cn", "work_for": "武汉大学", "country": "中国" } ], "category": "冰川" }