本数据集为2001-2010年黄土高塬沟壑区砚瓦川流域砚瓦川径流站逐日蒸发数据，测量蒸发皿使用20cm，每年12月，每月31天进行观测，观测要素有逐月蒸发量、逐月最大蒸发量、逐月最小蒸发量、年统计最大最小蒸发量和冬冰初冰时间等基础数据。", "ds_source": "
观测后再换清水，使皿内保持20mm的水量。皿内有雨水降入时，应在观测记录时减除降水量即得该次实际蒸发量。当皿内有冰时，应用称量法观测，将皿内注入20mm清水，在台秤上称其重量（g），将台秤刻度定在注入20mm水的重量处，观测日，将蒸发皿（含冰）放在台秤上，用雨量杯向蒸发皿加水，至台秤持平，加入水量即为累计蒸发量。
", "ds_process_way": "仪器监测，人工采集。
", "ds_quality": "观测数据整编录入过程中经过四级人工校核，分别是制表，初校，复校，审核，以确保数据质量。
", "ds_acq_start_time": "1981-01-01 00:00:00", "ds_acq_end_time": "1990-12-31 00:00:00", "ds_acq_place": "甘肃省庆阳市宁县砚瓦川流域", "ds_acq_lon_east": 107.62555555555555, "ds_acq_lat_south": 35.50472222222222, "ds_acq_lon_west": 107.91666666666667, "ds_acq_lat_north": 35.73722222222222, "ds_acq_alt_low": 980.0, "ds_acq_alt_high": 1340.0, "ds_share_type": "apply-access", "ds_total_size": 233984, "ds_files_count": 2, "ds_format": "Excel表格", "ds_space_res": null, "ds_time_res": "分", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "267be13c-a473-422f-8b05-f7e6a6fac9b3.jpg", "ds_thumb_from": 0, "ds_ref_way": "黄河水利委员会西峰水土保持科学试验站，2001-2010年黄土高塬沟壑区砚瓦川流域气象观测数据集，国家冰川冻土沙漠科学数据中心(www.ncdc.ac.cn)，2020，doi：10.12072/ncdc.HWXFZhan.db0035.2020", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "8f345532-a01e-49ca-a880-641bc176ede9", "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": "2020-11-18 07:57:13", "last_updated": "2021-07-08 18:56:07", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.HWXFZhan.2020.98", "i18n": { "en": { "title": "Meteorological observation data set of yanwachuan basin in Loess Plateau Gully Region from 2001 to 2010", "ds_format": "", "ds_source": "The model of evaporation observation instrument is HY.AM3 The diameter of the dish is 20cm, and the observation accuracy is 0.1mm. It was observed at 8 o'clock every day and every five days during the freezing period. The evaporation capacity of evaporating dish is observed by rainfall cup of the same specification or special platform scale. The original water in the evaporating dish is 20 mm. At 8:00 a.m. of the previous day, the water in the cup is filled with 20 mm. After 24 hours, the remaining water in the dish is returned to the measuring cup, and the amount of reduction is the evaporation of the day. After observation, change water to keep the water volume of 20 mm in the dish. When there is rain falling into the dish, the actual evaporation is obtained by subtracting the precipitation during the observation and recording. When there is ice in the dish, use the weighing method to observe. Pour 20 mm clear water into the dish, weigh the weight (g) on the platform scale, and set the scale at the weight of 20 mm water. On the observation day, put the evaporation pan (containing ice) on the platform scale, and add water to the pan with a rainfall cup until the scale is flat. The water added is the accumulated evaporation.
", "ds_quality": "In the process of compilation and input of observation data, there are four levels of manual verification, including tabulation, primary calibration, recheck and audit, so as to ensure the data quality.
", "ds_ref_way": "", "ds_abstract": "This data set is the daily evaporation data of yanwachuan runoff station in yanwachuan watershed of Loess Plateau Gully Region from 2001 to 2010. 20cm evaporating dish is used to measure the daily evaporation. The observation is carried out every December and 31 days every month. The observation elements include monthly evaporation, monthly maximum evaporation, monthly minimum evaporation, annual statistical maximum and minimum evaporation, and winter ice onset time.
", "ds_time_res": "分", "ds_acq_place": "Yanwachuan basin, Ningxian County, Qingyang City, Gansu Province", "ds_space_res": "", "ds_projection": "", "ds_process_way": "Instrument monitoring, manual collection.
", "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": [ "降水摘录", "降水量", "最大降水量", "时段降水量" ], "ds_subject_tags": [ "水文气象学" ], "ds_class_tags": [], "ds_locus_tags": [ "宁县", "庆阳", "砚瓦川", "甘肃省" ], "ds_time_tags": [ 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990 ], "ds_contributors": [ { "true_name": "黄河水利委员会西峰水土保持科学试验站", "email": "18526328@qq.com", "work_for": "黄河水利委员会西峰水土保持科学试验站", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "袁静", "email": "317806317@qq.com", "work_for": "黄河水利委员会西峰水土保持科学试验站", "country": "中国" } ], "ds_managers": [ { "true_name": "袁静", "email": "317806317@qq.com", "work_for": "黄河水利委员会西峰水土保持科学试验站", "country": "中国" } ], "category": "水土保持" }