2008年7月11日，在临泽草地加密观测区样方A（芦苇地），样方B（盐碱地），样方C（盐碱地）、样方D（苜蓿地）和样方E（大麦地）开展了Envisat ASAR数据的地面同步观测。Envisat ASAR数据为AP模式，VV/VH极化组合方式，过境时间约为11:26BJT。主要观测变量为土壤水分。本数据可为发展和验证主动微波遥感反演土壤水分和土壤盐分算法提供基本的地面数据集。\n
\n观测在120m×120m，6Grid×6Grid样方内展开。临泽草地加密观测区样方A、样方B和样方C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；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冠顶温度和土壤表面温度。样方D和样方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冠顶温度和土壤表面温度。\n
\n\n本数据集包括5个样方测量的土壤水分数据Excel表格。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7月11日，在临泽草地加密观测区样方A（芦苇地），样方B（盐碱地），样方C（盐碱地）、样方D（苜蓿地）和样方E（大麦地）开展了Envisat ASAR数据的地面同步观测。
", "ds_process_way": "临泽草地加密观测区样方A、样方B和样方C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；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冠顶温度和土壤表面温度。样方D和样方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冠顶温度和土壤表面温度。
", "ds_quality": "数据质量良好
", "ds_acq_start_time": "2008-07-11 00:00:00", "ds_acq_end_time": "2008-07-11 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": 412310209, "ds_files_count": 2, "ds_format": "excel", "ds_space_res": null, "ds_time_res": "时", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "1ab7cc44-48ec-4347-84cb-45655772a570.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.db1892.2022", "subject_codes": [ "170.4510" ], "quality_level": 3, "publish_time": "2022-03-15 16:58:16", "last_updated": "2025-06-30 16:08:06", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.NIEER.2021.1829", "i18n": { "en": { "title": "Heihe River Integrated Remote Sensing joint experiment: ENVISAT ASAR ground synchronous observation data set in Linze grassland intensive observation area (July 11, 2008)", "ds_format": "excel", "ds_source": "On July 11, 2008, the ground synchronous observation of ENVISAT ASAR data was carried out in sample a (reed land), sample B (saline alkali land), sample C (saline alkali land), sample D (alfalfa land) and sample e (barley land) in the intensive observation area of Linze grassland.", "ds_quality": "
& emsp; Good data quality
", "ds_ref_way": "", "ds_abstract": "On July 11, 2008, the ground synchronous observation of ENVISAT ASAR data was carried out in sample a (reed land), sample B (saline alkali land), sample C (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 11:26bjt. The main observation variable is soil moisture. This data can provide a basic ground data set for the development and verification of active microwave remote sensing algorithm for retrieving soil moisture and soil salt.\n
\nObserved at 120m × 120m，6Grid × Unfold in 6grid quadrat. Sample a, sample B and sample C in the intensive observation area of Linze grassland are sampled with a ring knife and dried to obtain weight water content, volume water content and soil bulk density; Needle thermometer to obtain 0-5cm average soil temperature; The crown top temperature and soil surface temperature were obtained by hand-held infrared thermometer. Pogo portable soil sensors are used for sample D and sample e 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 crown top temperature and soil surface temperature were obtained by hand-held infrared thermometer.\n
\nThis data set consists of Excel tables of soil moisture data measured by 5 quadrats. 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": "Sample a, sample B and sample C in the intensive observation area of Linze grassland are sampled with a ring knife and dried to obtain weight water content, volume water content and soil bulk density; Needle thermometer to obtain 0-5cm average soil temperature; The crown top temperature and soil surface temperature were obtained by hand-held infrared thermometer. Pogo portable soil sensors are used for sample D and sample e 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 crown top temperature and soil surface temperature were obtained by hand-held infrared thermometer.", "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": "https://creativecommons.org/licenses/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": [ "航天遥感", "土壤", "微波遥感", "植被", "地表辐射特性", "机载地面遥感", "土壤湿度", "地面验证信息", "ASAR", "土壤温度", "针式温度计", "POGO便携式土壤水分传感器", "地面同步观测", "地表辐射温度", "手持式红外温度计", "冠层辐射温度", "环刀", "土壤水分" ], "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": "盖春梅", "email": "Gechm@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": "黄春林", "email": "huangcl@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": "刘超", "email": "lc287@126.com", "work_for": "中国科学院西北生态环境资源研究院", "country": "" } ], "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" }