本数据集为1945-1958年黄土丘陵沟壑区第三副区大柳树沟流域降水观测数据。因流域面积甚小，故引用了流域内梁家坪试验场气象园的降水资料。数据集包括逐日降水量观测数据、降水量摘录数据、各时段最大降水量数据（按分钟和小时摘录）。
", "ds_source": "仪器连续观测，人工定时观测。
", "ds_process_way": "降水量观测仪器包括普通雨量器和自记雨量计两种。使用的雨量器有自记雨量计和普通雨量器两种。自记雨量计型号有两种：一是仿苏П-1型自记计；二是天津海洋仪器厂制造的DSJ2型虹吸自记计。普通雨量器按承雨口径大小分两种，即口径20cm的标准雨量筒及口径11.3cm的简易雨量筒。降水量一般按两段制观测。各站除按规定时段观测外，还要记载降水起讫时间。
", "ds_quality": "自记式雨量计每年汛期开始前进行仪器标定。观测过程中自记雨量计出现异常值时使用普通雨量计观测值进行插补。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": "1945-01-01 00:00:00", "ds_acq_end_time": "1958-12-31 00:00:00", "ds_acq_place": "甘肃省天水市秦州区大柳树沟流域", "ds_acq_lon_east": 105.7325, "ds_acq_lat_south": 34.56666666666667, "ds_acq_lon_west": 105.7325, "ds_acq_lat_north": 34.56666666666667, "ds_acq_alt_low": 1107.0, "ds_acq_alt_high": 1176.0, "ds_share_type": "apply-access", "ds_total_size": 612442, "ds_files_count": 3, "ds_format": "excel", "ds_space_res": null, "ds_time_res": "分", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "93b3c579-5a4a-409b-9bea-bb005558787a.png", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "该数据为无偿共享，共享方式为离线申请。", "ds_from_station": null, "organization_id": "49b5ee01-70c1-4c22-8937-1f94d7fcabe2", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": [], "quality_level": 3, "publish_time": "2022-08-16 10:55:36", "last_updated": "2023-05-16 17:35:13", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.HWTSZhan.2020.40", "i18n": { "en": { "title": "Precipitation observation data set of daliushugou watershed in the third sub region of Loess Hilly and gully region from 1945 to 1958", "ds_format": "", "ds_source": " <p>Instrument continuous observation, artificial timing observation. </p>\n <p>The self recording rain gauge is calibrated before the beginning of flood season every year. In the observation process, when the self recording rain gauge has abnormal value, the ordinary rain gauge observation value is used for interpolation. 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. </p>\n <p>This data set is the precipitation observation data of daliushugou watershed in the third sub region of Loess Hilly and gully region from 1945 to 1958. Because the basin area is very small, the precipitation data of liangjiaping experimental field meteorological Park in the basin is quoted. The data set includes daily precipitation observation data, precipitation extract data and maximum precipitation data of each period (extracted by minutes and hours). </p>\n <p>There are two kinds of precipitation observation instruments: ordinary rain gauge and self recording rain gauge. There are two kinds of rain gauge used: self recording rain gauge and ordinary rain gauge. There are two types of self recording rain gauge: one is imitated Su Ν - 1 self recording meter; the other is dsj2 siphon self recording meter made by Tianjin Ocean instrument factory. The ordinary rain gauge is divided into two types according to the size of the rain bearing caliber, i.e. the standard rain tube with the diameter of 20 cm and the simple rain tube with the diameter of 11.3 cm. Precipitation is generally observed in two-stage system. In addition to observing according to the specified time interval, each station should also record the beginning and ending time of precipitation. </p>\n