2008年3月21日运-12飞机搭载L&K波段微波辐射计进行了航空飞行试验，飞行时间为8:25至11:15BJT。地面同步观测主要参数包括地表辐射温度、地表物理温度、土壤剖面0-1cm、1-3cm、3-5cm的重量含水量（烘干称重法），表层土壤冻融状况（以冻结深度表示），积雪深度。\n
\n由于晚上扁都口地区降雪，所以地表覆盖大概有10cm左右的新雪。随着时间接近中午，地表积雪有融化的迹象，由于飞行区域内海拔不同，所以积雪融化的时间也不同。但是由于事先没有准备雪分析仪，所以并没有积雪相关参数的测量。\n
\n1）微波辐射计观测角度为垂直地表观测，所以，辐射计数据没有极化之分。\n
\n2）地表辐射温度和物理温度测量采用手持式红外温度计，测量时采用近距测量模式。地表物理温度采用手持式红外温度计附带的热电偶温度计（某些样点同时使用了针式热敏电阻温度计）。\n
\n3）冻融深度测量方法是通过用筷子插入土壤感觉其硬度或者将土壤表层冻结层直接挖出测量冻结层厚度，来判断冻融深度。直尺直接测量，当土壤硬度较大并且有冰晶时，认为土壤冻结；反之，则认为土壤未冻。\n
\n4）积雪深度是利用直尺直接测量。\n
\n5）土壤水分：取0-1cm、1-3cm、3-5cm土样，放入自封袋，然后用微波炉烘干，计算其土壤重量含水量。土壤的体积含水量可以通过容重数据计算。数据可以用Microsoft Office软件打开。\n
\n本数据集包括各地面同步采样点的地面观测数据和样点坐标数据。", "ds_source": "
2008年3月21日运-12飞机搭载LK波段微波辐射计进行了航空飞行试验，飞行时间为8:25至11:15BJT。地面同步观测主要参数包括地表辐射温度、地表物理温度、土壤剖面0-1cm、1-3cm、3-5cm的重量含水量（烘干称重法），表层土壤冻融状况（以冻结深度表示），积雪深度。\n
\n由于晚上扁都口地区降雪，所以地表覆盖大概有10cm左右的新雪。随着时间接近中午，地表积雪有融化的迹象，由于飞行区域内海拔不同，所以积雪融化的时间也不同。但是由于事先没有准备雪分析仪，所以并没有积雪相关参数的测量。", "ds_process_way": "
微波辐射计观测角度为垂直地表观测，所以，辐射计数据没有极化之分。\n
\n2）地表辐射温度和物理温度测量采用手持式红外温度计，测量时采用近距测量模式。地表物理温度采用手持式红外温度计附带的热电偶温度计（某些样点同时使用了针式热敏电阻温度计）。\n
\n3）冻融深度测量方法是通过用筷子插入土壤感觉其硬度或者将土壤表层冻结层直接挖出测量冻结层厚度，来判断冻融深度。直尺直接测量，当土壤硬度较大并且有冰晶时，认为土壤冻结；反之，则认为土壤未冻。\n
\n4）积雪深度是利用直尺直接测量。\n
\n5）土壤水分：取0-1cm、1-3cm、3-5cm土样，放入自封袋，然后用微波炉烘干，计算其土壤重量含水量。土壤的体积含水量可以通过容重数据计算。数据可以用Microsoft Office软件打开。", "ds_quality": "
数据质量良好", "ds_acq_start_time": "2008-03-21 00:00:00", "ds_acq_end_time": "2008-03-22 00:00:00", "ds_acq_place": "黑河流域,扁都口加密观测区,上游寒区水文实验站", "ds_acq_lon_east": 100.44305555555556, "ds_acq_lat_south": 38.04333333333333, "ds_acq_lon_west": 100.58972222222222, "ds_acq_lat_north": 38.973888888888894, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 13163084, "ds_files_count": 2, "ds_format": "txt", "ds_space_res": null, "ds_time_res": "时", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "fdbb448d-c5b3-4e5e-ad24-ca7716a29405.png", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "本数据由“黑河综合遥感联合试验”产生，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": "14df1d8b-6362-4c0f-b88e-b46d4abe5db9", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "10.12072/ncdc.NIEER.db1884.2022", "subject_codes": [ "170.4510" ], "quality_level": 3, "publish_time": "2022-03-15 17:04:02", "last_updated": "2025-06-30 16:05:47", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.NIEER.2021.1833", "i18n": { "en": { "title": "Heihe integrated remote sensing joint experiment: L & K band airborne microwave radiometer ground synchronous observation data set in biandukou intensive observation area (March 21, 2008)", "ds_format": "txt", "ds_source": "
On March 21, 2008, Yun-12 aircraft carried out aviation flight test with LK band microwave radiometer, and the flight time was 8:25 to 11:15bjt. The main parameters of ground synchronous observation include surface radiation temperature, surface physical temperature, weight and water content of soil profile 0-1cm, 1-3cm and 3-5cm (drying and weighing method), surface soil freezing and thawing status (expressed in freezing depth) and snow depth.\n
\nDue to the snowfall in biandukou area at night, the surface is covered with about 10cm of new snow. As the time approaches noon, the surface snow shows signs of melting. Due to different altitudes in the flight area, the time of snow melting is also different. However, since the snow analyzer was not prepared in advance, there was no measurement of snow related parameters.", "ds_quality": "
Good data quality", "ds_ref_way": "", "ds_abstract": "
On March 21, 2008, Yun-12 aircraft carried L & amp; The K-band microwave radiometer has carried out aviation flight test, and the flight time is 8:25 to 11:15bjt. The main parameters of ground synchronous observation include surface radiation temperature, surface physical temperature, weight and water content of soil profile 0-1cm, 1-3cm and 3-5cm (drying and weighing method), surface soil freezing and thawing status (expressed in freezing depth) and snow depth.\n
\nDue to the snowfall in biandukou area at night, the surface is covered with about 10cm of new snow. As the time approaches noon, the surface snow shows signs of melting. Due to different altitudes in the flight area, the time of snow melting is also different. However, since the snow analyzer was not prepared in advance, there was no measurement of snow related parameters.\n
\n1) The observation angle of microwave radiometer is vertical to the surface, so there is no polarization of radiometer data.\n
\n2) The surface radiation temperature and physical temperature are measured by hand-held infrared thermometer, and the short-range measurement mode is adopted. The surface physical temperature adopts the thermocouple thermometer attached to the hand-held infrared thermometer (needle thermistor thermometer is also used at some sample points).\n
\n3) The measurement method of freezing and thawing depth is to judge the freezing and thawing depth by inserting chopsticks into the soil to feel its hardness or directly digging out the frozen layer on the surface of the soil to measure the thickness of the frozen layer. Measured directly with a ruler, when the soil hardness is large and there are ice crystals, it is considered that the soil is frozen; On the contrary, it is considered that the soil is not frozen.\n
\n4) The depth of snow is measured directly with a ruler.\n
\n5) Soil moisture: take 0-1cm, 1-3cm and 3-5cm soil samples, put them into self sealing bags, and then dry them in microwave oven to calculate the soil weight and water content. The volumetric water content of the soil can be calculated from the bulk density data. Data can be opened with Microsoft office software.\n
\nThis data set includes the ground observation data and sample point coordinate data of each ground synchronous sampling point.
", "ds_time_res": "时", "ds_acq_place": "Heihe River Basin, biandukou intensive observation area, upstream cold region hydrological experimental station", "ds_space_res": "", "ds_projection": "", "ds_process_way": "The observation angle of microwave radiometer is vertical to the surface, so there is no polarization of radiometer data.\n
\n2) The surface radiation temperature and physical temperature are measured by hand-held infrared thermometer, and the short-range measurement mode is adopted. The surface physical temperature adopts the thermocouple thermometer attached to the hand-held infrared thermometer (needle thermistor thermometer is also used at some sample points).\n
\n3) The measurement method of freezing and thawing depth is to judge the freezing and thawing depth by inserting chopsticks into the soil to feel its hardness or directly digging out the frozen layer on the surface of the soil to measure the thickness of the frozen layer. Measured directly with a ruler, when the soil hardness is large and there are ice crystals, it is considered that the soil is frozen; On the contrary, it is considered that the soil is not frozen.\n
\n4) The depth of snow is measured directly with a ruler.\n
\n5) Soil moisture: take 0-1cm, 1-3cm and 3-5cm soil samples, put them into self sealing bags, and then dry them in microwave oven to calculate the soil weight and water content. The volumetric water content of the soil can be calculated from the bulk density data. Data can be opened with Microsoft office software.", "ds_ref_instruction": "This data was generated by the \"Heihe Comprehensive Remote Sensing Joint Experiment\". When using the data, please clearly state the source of the data in the main text and cite the citation provided by 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": [ "地表辐射温度", "雪深", "1.L波段机载微波辐射计", "地面同步观测", "土壤冻结深度", "K波段机载微波辐射计", "土壤水分", "土壤物理温度", "手持式红外温度计" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "扁都口加密观测区", "黑河流域", "上游寒区水文试验区" ], "ds_time_tags": [ 2008 ], "ds_contributors": [ { "true_name": "赵少杰", "email": "geo_zhao@126.com", "work_for": "北京师范大学", "country": "中国" }, { "true_name": "赵天杰", "email": "zhaotj@radi.ac.cn", "work_for": "中国科学院遥感与数字地球研究所", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "赵少杰", "email": "geo_zhao@126.com", "work_for": "北京师范大学", "country": "中国" } ], "ds_managers": [ { "true_name": "赵少杰", "email": "geo_zhao@126.com", "work_for": "北京师范大学", "country": "中国" } ], "category": "遥感及产品" }