{ "created": "2024-02-26 12:44:01", "updated": "2026-04-28 16:36:43", "id": "bc7b36b9-f76c-4a0d-bc13-951e803e1f7c", "version": 2, "ds_topic": null, "title_cn": "青海湖观测点 ERA5-Land 气象驱动场逐时数据(1979.1-2023.6)", "title_en": "Hourly data of ERA5-Land Meteorological driving field at Qinghai Lake Observation Point (1979.1-2023.6)", "ds_abstract": "

  本数据集基于ERA5-Land再分析数据，结合编程语言，分别提取处理，获得位于青海湖观测点的大气强迫变量。本数据集为青海湖地区的气候变化、湖冰演变、湖冰过程驱动冰下生态变化研究提供了基础数据，并为Flake等湖泊模式提供了驱动数据。

", "ds_source": "

  1. 数据命名：ERA5_QHL_hourly_1979_2023_ok.txt\n

\n

  2. 属性信息：\n

\n

  ERA5-Land再分析数据；UTC: 时间（世界时）；Srad: 向下短波辐射(W m-2)；Lrad: 向下长波辐射(W m-2)；Tair: 2m气温(K)；Pres: 地表气压(Pa)；Shum: 比湿(g kg-1)； Wind: 风速(m s-1)；Rhum: 相对湿度。

", "ds_process_way": "

  ERA5-Land 再分析数据处理：\n

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  (1)1979-2023年青海湖观测点数据提取\n

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  (2)单位换算:向下长波辐射和向下短波辐射的值是从预报时间开始到预报步骤结束时的累计值，对该类型变量进行计算，转换每小时辐射值，并将辐射单位从焦耳/平方米(J m-2)转换为每平方米瓦特数(W m-2)。\n

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  (3)风速、比湿和相对湿度计算：风速由下载变量10m u和10m v进行平方根运算获得；比湿和相对湿度由下载变量2m气温和2m露点温度进行计算获得。

", "ds_quality": "

  本数据在获取处理各阶段均有专业人员负责、数据质量良好。

", "ds_acq_start_time": "1979-01-01 00:00:00", "ds_acq_end_time": "2023-06-30 00:00:00", "ds_acq_place": "青海湖", "ds_acq_lon_east": null, "ds_acq_lat_south": null, "ds_acq_lon_west": null, "ds_acq_lat_north": null, "ds_acq_alt_low": null, "ds_acq_alt_high": 3200.0, "ds_share_type": "apply-access", "ds_total_size": 33723731, "ds_files_count": 2, "ds_format": "", "ds_space_res": null, "ds_time_res": "时", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "bc7b36b9-f76c-4a0d-bc13-951e803e1f7c.png", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "用户在使用数据时请在正文中明确声明数据的来源，并在参考文献部分引用本元数据提供的引用方式。", "ds_from_station": null, "organization_id": "8078220d-03f2-49ae-b81f-ae7cb30adede", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": [ "170.45" ], "quality_level": 3, "publish_time": "2024-02-27 09:22:23", "last_updated": "2024-03-18 15:51:33", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.NCDC.ICETMP.DB4209.2024", "i18n": { "en": { "title": "Hourly data of ERA5-Land Meteorological driving field at Qinghai Lake Observation Point (1979.1-2023.6)", "ds_format": "", "ds_source": "

  1.Name of Data：ERA5_QHL_hourly_1979_2023_ok.txt\n

\n

  2. Data description of attribute items\n

\n

  ERA5-Land reanalysis data;UTC: Time (Universal Time);Srad: Surface solar radiation downwards (W m-2);Lrad: Surface thermal radiation downwards (W m-2);Tair: 2m temperature (K);Pres: Surface pressure (Pa);Shum: Specific humidity (g kg-1);Wind: Wind speed (m s-1);Rhum: Relative humidity.

", "ds_quality": "

  This data has been obtained and processed by professional personnel at all stages, and the data quality is well.

", "ds_ref_way": "", "ds_abstract": "

  This dataset is based on ERA5-Land reanalysis data, combined with programming language to extract and process atmospheric forcing variables located at observation points in Qinghai Lake. This dataset provides basic data for the study of climate change, lake ice evolutionand, and the evolution of subglacial ecology driven by lake ice process in the Qinghai Lake region, and provides driving data for lake models such as Flake.

", "ds_time_res": "时", "ds_acq_place": "Qinghai Lake", "ds_space_res": "", "ds_projection": "", "ds_process_way": "

   Processing of ERA5-Land Reanalysis Data：\n

\n

  (1) Data extraction from observation points of Qinghai Lake from 1979 to 2023.\n

\n

  (2) Unit conversion：The values of downward longwave radiation and downward shortwave radiation are the cumulative values from the beginning of the prediction time to the end of the prediction step. This type of variable is calculated, converted into hourly radiation values, and the radiation units are converted from joules per square meter (J m-2) to watts per square meter (W m-2).\n

\n

  (3) Calculation of wind speed, specific humidity, and relative humidity：The wind speed is obtained by performing square root operations on the downloaded variables 10m u and 10m v;The specific humidity and relative humidity were calculated from the downloaded variables of 2m air temperature and 2m dew point temperature.

", "ds_ref_instruction": "When using data, please clearly state the source of the data in the main text and cite the citation method provided in this metadata in the reference section." } }, "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": [ "高原湖泊", "气象", "湖冰", "ERA5—Land" ], "ds_subject_tags": [ "地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "青海湖" ], "ds_time_tags": [ 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, 2019, 2020, 2021, 2022, 2023 ], "ds_contributors": [ { "true_name": "富翔", "email": "fuxiangXF@163.com", "work_for": "大连理工大学海岸和近海工程国家重点实验室", "country": "中国" }, { "true_name": "李志军", "email": "lizhijun@dlut.edu.cn", "work_for": "大连理工大学海岸和近海工程国家重点实验室", "country": "中国" }, { "true_name": "李春江", "email": "lichunjiang0405@mail.dlut.edu.cn", "work_for": "大连理工大学海岸和近海工程国家重点实验室", "country": "中国" }, { "true_name": "霍璞真", "email": "hpz_ice@163.com", "work_for": "大连理工大学海岸和近海工程国家重点实验室", "country": "中国" }, { "true_name": "陈书超", "email": "chenshuchao@mail.edu.cn", "work_for": "大连理工大学海岸和近海工程国家重点实验室", "country": "中国" }, { "true_name": "张晗", "email": "zhanghan2021@mail.dlut.edu.cn", "work_for": "大连理工大学海岸和近海工程国家重点实验室", "country": "中国" }, { "true_name": "杨柳依依", "email": "yangliuyiyi21@mails.ucas.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": "文莉娟", "email": "wlj@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": "牛瑞佳", "email": "niuruijia20@mails.ucas.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": "王梦晓", "email": "wangmengxiao@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": "黄文峰", "email": "huangwenfeng@chd.edu.cn", "work_for": "长安大学水利与环境学院", "country": "中国" }, { "true_name": "赵雯", "email": "zhaowen@chd.edu.cn", "work_for": "长安大学水利与环境学院", "country": "中国" }, { "true_name": "李明", "email": "2023029002@chd.edu.cn", "work_for": "长安大学水利与环境学院", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "富翔", "email": "fuxiangXF@163.com", "work_for": "大连理工大学海岸和近海工程国家重点实验室", "country": "中国" } ], "ds_managers": [ { "true_name": "富翔", "email": "fuxiangXF@163.com", "work_for": "大连理工大学海岸和近海工程国家重点实验室", "country": "中国" }, { "true_name": "文莉娟", "email": "wlj@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": "气象" }