2008年05月24日，在临泽草地加密观测区样方B（盐碱地），样方D（苜蓿地），样方E（大麦地）开展了ASAR数据的地面同步观测试验。Envisat ASAR数据为AP模式，VV/VH极化组合方式，过境时间约为11:34BJT。本数据可为发展和验证主动微波遥感反演土壤水分及盐分算法提供基本地面数据集。\n 临泽草地加密观测区各土壤水分同步样方均为6Grid×6Grid，120m×120m正方形。在每个Grid的角点进行采样测量。本试验共进行了以下观测：\n
\n样方B：由于盐分含量较大，采用环刀取土经烘干获得重量含水量、体积含水量及土壤容重；并使用针式温度计获得0-5cm平均土壤温度；手持式红外温度计获得3次地表辐射温度。 \n
\n样方D：采用WET土壤水分速测仪测量获得土壤含水量、电导率、土壤复介电常数实部及土壤温度；并使用针式温度计获得0-5cm平均土壤温度；手持式红外温度计获得3次地表辐射温度。\n
\n样方E：采用POGO便携式土壤传感器获得土壤温度、土壤水分、损耗正切、土壤电导率、土壤复介电实部及虚部；针式温度计获得0-5cm平均土壤温度；手持式红外温度计获得3次地表辐射温度。\n
\n本数据集包括临泽草地加密观测区3个样方所测量数据Excel表格。但样方D的WET土壤水分速测仪的原始数据没有导出！样方样带的分布信息请参见元数据“黑河综合遥感联合试验：临泽草地加密观测区样方样带布置”。
", "ds_source": "2008年05月24日，在临泽草地加密观测区样方B（盐碱地），样方D（苜蓿地），样方E（大麦地）开展了ASAR数据的地面同步观测试验。
", "ds_process_way": "本试验共进行了以下观测：
\n\n样方B：由于盐分含量较大，采用环刀取土经烘干获得重量含水量、体积含水量及土壤容重；并使用针式温度计获得0-5cm平均土壤温度；手持式红外温度计获得3次地表辐射温度。
\n\n样方D：采用WET土壤水分速测仪测量获得土壤含水量、电导率、土壤复介电常数实部及土壤温度；并使用针式温度计获得0-5cm平均土壤温度；手持式红外温度计获得3次地表辐射温度。
\n\n样方E：采用POGO便携式土壤传感器获得土壤温度、土壤水分、损耗正切、土壤电导率、土壤复介电实部及虚部；针式温度计获得0-5cm平均土壤温度；手持式红外温度计获得3次地表辐射温度。
", "ds_quality": "数据质量良好
", "ds_acq_start_time": "2008-05-24 00:00:00", "ds_acq_end_time": "2008-05-25 00:00:00", "ds_acq_place": "黑河流域,中游干旱区水文试验区,临泽草地加密观测区", "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": 31467, "ds_files_count": 2, "ds_format": "excel", "ds_space_res": null, "ds_time_res": "时", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "4ac6a265-9808-4bef-9f90-7125d66476b8.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.db1886.2022", "subject_codes": [ "170.4510" ], "quality_level": 3, "publish_time": "2022-03-15 17:03:19", "last_updated": "2025-06-30 16:08:04", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.NIEER.2021.1809", "i18n": { "en": { "title": "Heihe River Integrated Remote Sensing joint experiment: ENVISAT ASAR ground synchronous observation data set in Linze grassland intensive observation area (May 24, 2008)", "ds_format": "excel", "ds_source": "On May 24, 2008, the ground synchronous observation test of ASAR data was carried out in sample B (saline alkali land), sample D (alfalfa land) and sample e (barley land) in the intensive observation area of Linze grassland
", "ds_quality": "Good data quality
", "ds_ref_way": "", "ds_abstract": "On May 24, 2008, the ground synchronous observation test of ASAR data was carried out in sample B (saline alkali land), sample D (alfalfa land) and sample e (barley land) in the intensive observation area of Linze grassland. ENVISAT ASAR data is AP mode, VV / VH polarization combination mode, and the transit time is about 11:34bjt. This data can provide a basic ground data set for the development and verification of active microwave remote sensing algorithm for soil moisture and salt retrieval.\n The synchronous quadrats of soil moisture in the intensive observation area of Linze grassland are 6grid × 6Grid，120m × 120m square. Sampling measurements are performed at the corners of each grid. The following observations were made in this test:\n
\nQuadrat B: due to the high salt content, the ring knife is used to obtain the weight water content, volume water content and soil bulk density after drying; The average soil temperature of 0-5cm was obtained by needle thermometer; The hand-held infrared thermometer obtains the surface radiation temperature three times.\n
\nQuadrat D: soil moisture content, electrical conductivity, real part of soil complex dielectric constant and soil temperature are measured by wet soil moisture meter; The average soil temperature of 0-5cm was obtained by needle thermometer; The hand-held infrared thermometer obtains the surface radiation temperature three times.\n
\nQuadrat e: pogo portable soil sensor is used to obtain soil temperature, soil moisture, loss tangent, soil conductivity, real and imaginary parts of soil complex dielectric; Needle thermometer to obtain 0-5cm average soil temperature; The hand-held infrared thermometer obtains the surface radiation temperature three times.\n
\nThis data set includes the excel table of the measured data of three quadrats in the dense observation area of Linze grassland. However, the original data of wet soil moisture rapid tester of quadrat D has not been exported! See metadata \"Heihe integrated remote sensing joint experiment: layout of quadrat transects in Linze grassland densified observation area\" for the distribution information of quadrat transects
", "ds_time_res": "时", "ds_acq_place": "Heihe River Basin, arid area in the middle reaches, hydrological experimental area, Linze grassland intensive observation area", "ds_space_res": "", "ds_projection": "", "ds_process_way": "The following observations were made in this test:
\nQuadrat B: due to the high salt content, the ring knife is used to obtain the weight water content, volume water content and soil bulk density after drying; The average soil temperature of 0-5cm was obtained by needle thermometer; The hand-held infrared thermometer obtains the surface radiation temperature three times
\nQuadrat D: soil moisture content, electrical conductivity, real part of soil complex dielectric constant and soil temperature are measured by wet soil moisture meter; The average soil temperature of 0-5cm was obtained by needle thermometer; The hand-held infrared thermometer obtains the surface radiation temperature three times
\nQuadrat e: pogo portable soil sensor is used to obtain soil temperature, soil moisture, loss tangent, soil conductivity, real and imaginary parts of soil complex dielectric; Needle thermometer to obtain 0-5cm average soil temperature; The hand-held infrared thermometer obtains the surface radiation temperature three times
", "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": [ "针式温度计", "POGO便携式土壤水分传感器", "WET土壤水分速测仪", "土壤水分", "环刀", "地面同步观测", "ASAR", "土壤温度", "地表辐射温度", "手持式红外温度计", "航天遥感", "土壤", "微波遥感", "地表辐射特性", "机载地面遥感", "土壤湿度", "地面验证信息" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "黑河流域", "中游干旱区水文试验区", "临泽草地加密观测区" ], "ds_time_tags": [ 2008 ], "ds_contributors": [ { "true_name": "晋锐", "email": "jinrui@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": "胡晓利", "email": "huxiaoli@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "" }, { "true_name": "王维真", "email": "", "work_for": "中国科学院寒区旱区环境与工程研究", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "晋锐", "email": "jinrui@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_managers": [ { "true_name": "晋锐", "email": "jinrui@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": "遥感及产品" }