0℃层高度是大气探测的一个重要特性层，反映着大气对流层中下层的温度状况，该层的升降一定程度上影响山体地表：0℃线的升降，进而影响山区水的冻融过程。分析中国西部39个高空站规定层的高度和温度，计算夏季(6-8月) 0℃层的高度，进行Kriging插值，得到柴达木盆地夏季0℃层的高度分布图。", "ds_source": "
原始数据为中国高空气象站观测资料。包含了国家气象信息中心通过国内通信系统获取的89个中国探空观测站点各规定等压面和压温湿特性层位势高度、温度、露点温度、风向、风速观测数据。", "ds_process_way": "
分析中国西部39个高空站规定层的高度和温度，计算夏季(6-8月) 0℃层的高度，以1km空间分辨率进行Kriging插值，得到柴达木盆地夏季0℃层的高度分布图。", "ds_quality": "
数据质量良好。", "ds_acq_start_time": "1970-01-01 00:00:00", "ds_acq_end_time": "2018-12-31 00:00:00", "ds_acq_place": "柴达木盆地", "ds_acq_lon_east": 90.25, "ds_acq_lat_south": 35.0, "ds_acq_lon_west": 96.25, "ds_acq_lat_north": 39.31666666666667, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 2934045, "ds_files_count": 2, "ds_format": "tif", "ds_space_res": "1km", "ds_time_res": "", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "2e6ade6a-0c57-468b-8f76-2d7a3648b39f.jpg", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "4851e874-eafc-4879-812b-ffbdd825e967", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "10.12072/ncdc.Hydro.db2426.2022", "subject_codes": [ "170.45" ], "quality_level": 3, "publish_time": "2022-09-29 11:02:33", "last_updated": "2025-04-29 15:29:54", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.Hydro.db2426.2022", "i18n": { "en": { "title": "Qaidam area 1km resolution 0 ℃ height distribution dataset (1970-2018)", "ds_format": "TIF", "ds_source": "
The raw data were obtained from China's upper-air meteorological station observations, comprising upper-air measurements from 89 radiosonde stations across China. These data were acquired by the National Meteorological Information Center (NMIC) through the domestic meteorological telecommunication system and include the following variables at standard pressure levels and significant levels: geopotential height, temperature, dew-point temperature, wind direction, and wind speed.", "ds_quality": "
The data quality is good.", "ds_ref_way": "", "ds_abstract": "
The 0°C isotherm altitude is a critical characteristic layer in atmospheric sounding, reflecting the thermal conditions of the middle-lower troposphere. Its vertical fluctuations influence surface processes in mountainous regions—particularly the rise and fall of the 0°C line, which governs the freeze-thaw cycle of water in alpine zones.Using upper-air data from 39 radiosonde stations in western China (with some stations having shorter records since 1979), we derived the summer (June–August) 0°C isotherm height from standard pressure-level altitudes and temperatures. Through Kriging interpolation and regression analysis, we quantified the spatiotemporal variation of the summer 0°C isotherm over the Qaidam Basin from 1985 to 2018. A fishnet tool was applied to statistically analyze the altitude changes per 1 km grid.
", "ds_time_res": "", "ds_acq_place": "Qaidam Basin", "ds_space_res": "1km", "ds_projection": "", "ds_process_way": "The heights and temperatures of the prescribed layers at 39 high altitude stations in western China were analysed to calculate the heights of the 0°C layer in summer (June-August), and the height distribution of the 0°C layer in summer in the Qaidam Basin was obtained by Kriging interpolation with a spatial resolution of 1 km.", "ds_ref_instruction": "" } }, "submit_center_id": "ncdc", "data_level": 0, "license_type": "CC 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": [ "柴达木盆地", "0℃高度分布", "1km" ], "ds_subject_tags": [ "地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "柴达木盆地" ], "ds_time_tags": [ 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018 ], "ds_contributors": [ { "true_name": "朱高峰", "email": "zhugf@lzu.edu.cn", "work_for": "兰州大学", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "石梦寒", "email": "shimh20@lzu.edu.cn", "work_for": "兰州大学", "country": "中国" } ], "ds_managers": [ { "true_name": "朱高峰", "email": "zhugf@lzu.edu.cn", "work_for": "兰州大学", "country": "中国" } ], "category": "气象" }