2008年3月12日在扁都口加密观测区开展了MODIS地面同步观测，测量样方包括扁都口C1样地、扁都口G1样地、扁都口B2样地。地面观测的内容包括地表辐射温度、物理温度、地面覆盖类型和土壤水分。\n
\n1）地表辐射温度：分别在扁都口C1样地、扁都口G1样地、扁都口B2样地进行了测量，测量时间范围是11:30-12:15。样方下垫面包括深翻地、油菜茬地和草地。测量仪器为手持式红外温度计，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。土壤粗糙度数据可以认为在试验期间没有变化，可以从其它时间的粗糙度数据集中获得。\n
\n2）土壤含水量：取0-1cm、1-3cm、3-5cm、5-10cm、10-20cm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。\n
\n3）土壤冻结深度的测量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，来判断冻结深度。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。地表覆盖度是以照片形式测量存储。\n
\n本数据包括4个文件，分别是：MODIS数据、扁都口B2样地测量数据、扁都口C1样地测量数据、扁都口G1样地测量数据。其中扁都口B2样地文件中包含地表温度、冻结深度数据、土壤含水量数据。扁都口C1样地测量数据包括地表覆盖度、地表温度、植被参数数据和植被参数数据。扁都口G1样地文件中包含地表温度、冻融深度数据和土壤含水量数据", "ds_source": "
2008年3月12日在扁都口加密观测区开展了MODIS地面同步观测，测量样方包括扁都口C1样地、扁都口G1样地、扁都口B2样地。地面观测的内容包括地表辐射温度、物理温度、地面覆盖类型和土壤水分。", "ds_process_way": "
1）地表辐射温度：分别在扁都口C1样地、扁都口G1样地、扁都口B2样地进行了测量，测量时间范围是11:30-12:15。样方下垫面包括深翻地、油菜茬地和草地。测量仪器为手持式红外温度计，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。土壤粗糙度数据可以认为在试验期间没有变化，可以从其它时间的粗糙度数据集中获得。\n
\n2）土壤含水量：取0-1cm、1-3cm、3-5cm、5-10cm、10-20cm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。\n
\n3）土壤冻结深度的测量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，来判断冻结深度。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。地表覆盖度是以照片形式测量存储。", "ds_quality": "
\n数据质量良好
", "ds_acq_start_time": "2008-03-12 00:00:00", "ds_acq_end_time": "2008-03-13 00:00:00", "ds_acq_place": "黑河流域,扁都口加密观测站,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": 27846307, "ds_files_count": 2, "ds_format": "jpg", "ds_space_res": null, "ds_time_res": "时", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "7efa614e-a358-4bd5-ae69-b74f9c2afd6e.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.db1913.2022", "subject_codes": [ "170.4510" ], "quality_level": 3, "publish_time": "2022-03-16 08:53:54", "last_updated": "2025-06-30 16:05:49", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.nieer.2020.1541", "i18n": { "en": { "title": "Heihe integrated remote sensing joint test: MODIS ground synchronous observation data set in biandukou encrypted observation area (March 12, 2008)", "ds_format": "jpg", "ds_source": "On March 12, 2008, MODIS ground synchronous observation was carried out in the intensive observation area of biandukou. The survey quadrats include biandukou C1 sample plot, biandukou G1 sample plot and biandukou B2 sample plot. The contents of ground observation include surface radiation temperature, physical temperature, ground cover type and soil moisture.", "ds_quality": "
\nGood data quality
", "ds_ref_way": "", "ds_abstract": "On March 12, 2008, MODIS ground synchronous observation was carried out in the intensive observation area of biandukou. The survey quadrats include biandukou C1 sample plot, biandukou G1 sample plot and biandukou B2 sample plot. The contents of ground observation include surface radiation temperature, physical temperature, ground cover type and soil moisture.\n
\n1) Surface radiation temperature: measured at sample plot C1, sample plot G1 and sample plot B2 of biandukou, and the measurement time range is 11:30-12:15. The bread under the quadrat includes deep ploughing, rape stubble and grassland. The measuring instrument is a hand-held infrared thermometer, which adopts short-range measurement mode. The surface physical temperature adopts the thermocouple thermometer attached to the hand-held infrared thermometer. The soil roughness data can be considered as unchanged during the test and can be obtained from the roughness data set at other times.\n
\n2) Soil moisture content: take 0-1cm, 1-3cm, 3-5cm, 5-10cm and 10-20cm soil samples, put them into self sealing bags, and then dry them in microwave oven to calculate the soil weight moisture content.\n
\n3) The measurement of soil freezing depth is to judge the freezing depth by inserting chopsticks into the soil to feel its hardness or directly digging out the frozen layer on the surface of the soil and measuring 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. The surface coverage is measured and stored in the form of photos.\n
\nThis data includes four files: MODIS data, Biandu port B2 sample measurement data, Biandu port C1 sample measurement data and Biandu port G1 sample measurement data. The biandukou B2 sample plot file contains surface temperature, freezing depth data and soil water content data. The survey data of C1 sample plot in biandukou include surface coverage, surface temperature, vegetation parameter data and vegetation parameter data. The biandukou G1 sample plot file contains surface temperature, freeze-thaw depth data and soil water content data
", "ds_time_res": "时", "ds_acq_place": "Heihe River Basin, biandukou densified observation station, upstream cold region hydrological Experiment Station", "ds_space_res": "", "ds_projection": "", "ds_process_way": "1) Surface radiation temperature: measured at sample plot C1, sample plot G1 and sample plot B2 of biandukou, and the measurement time range is 11:30-12:15. The bread under the quadrat includes deep ploughing, rape stubble and grassland. The measuring instrument is a hand-held infrared thermometer, which adopts short-range measurement mode. The surface physical temperature adopts the thermocouple thermometer attached to the hand-held infrared thermometer. The soil roughness data can be considered as unchanged during the test and can be obtained from the roughness data set at other times.\n
\n2) Soil moisture content: take 0-1cm, 1-3cm, 3-5cm, 5-10cm and 10-20cm soil samples, put them into self sealing bags, and then dry them in microwave oven to calculate the soil weight moisture content.\n
\n3) The measurement of soil freezing depth is to judge the freezing depth by inserting chopsticks into the soil to feel its hardness or directly digging out the frozen layer on the surface of the soil and measuring 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. The surface coverage is measured and stored in the form of photos.", "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", "土壤冻结深度", "土壤物理温度", "MODIS", "土壤水分", "地面同步观测", "手持式红外温度计", "土壤湿度", "水分含量" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "扁都口加密观测区", "上游寒区水文试验区", "黑河流域" ], "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": "任华忠", "email": "renhuazhong@pku.edu.cn", "work_for": "北京大学遥感与地理信息系统研究所", "country": "中国" }, { "true_name": "车涛", "email": "chetao@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "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" }