2008年03月12日，在阿柔样方1、阿柔样方2和阿柔样方3开展了Envisat ASAR数据的地面同步观测试验。ASAR数据为AP模式，VV/VH极化组合方式，过境时间约为11:29BJT。阿柔样方2由于靠近河谷温度较低，积雪尚未融化，因此主要开展积雪参数的同步观测试验，而阿柔样方1和阿柔样方3积雪已消融，主要开展土壤冻融状况和土壤水分的同步观测试验。\n
\n阿柔样方1、阿柔样方2和阿柔样方3均为4Grid×4Grid，每个Grid为30m×30m。环刀取土只在每个Grid的中心点开展，其余测量在每个Grid的中心点和角点展开。\n
\n在阿柔样方1，采用POGO便携式土壤水分传感器获得土壤温度、土壤体积含水量、损耗正切、土壤电导率、土壤复介电常数实部及虚部；ML2X土壤水分速测仪获得土壤体积含水量；PR2土壤剖面水分速测仪获得10cm、20cm、30cm、40cm、60cm及100cm土壤体积含水量剖面；针式温度计获得0-5cm平均土壤温度；并采用100cm^3环刀取土经烘干获得土壤重量含水量、土壤容重及体积含水量。\n
\n在阿柔样方2，开展了与ASAR同步的积雪参数观测，包括卫星过境时同步的雪表面温度观测（采用热红外温度枪测量），分层雪层温度观测（采用针式温度计测量），雪粒径观测（采用手持式显微镜测量），雪密度观测（采用铝盒方式测量），以及雪表面和雪土界面同步温度测量（采用热红外温度枪测量）；积雪光谱观测（采用ASD光谱仪测量）；积雪反照率观测（采用总辐射表测量）。 \n
\n在阿柔样方3，采用WET土壤水分速测仪测量土壤体积含水量、电导率、土壤温度及土壤复介电常数实部；针式温度计（#5和#7）获得0-5cm平均土壤温度；手持式红外温度计（#5）获得地表辐射温度；并采用100cm^3环刀取土经烘干获得土壤重量含水量、土壤容重及体积含水量。地表粗糙度信息可参见“黑河综合遥感联合试验：阿柔加密观测区地表粗糙度数据集 ”元数据。此外，还在阿柔样方1开展了探地雷达同步观测。\n
本数据可为发展和验证主动微波遥感反演土壤水分及冻融状态算法，及利用GPR数据反演土壤水分及冻结深度提供基本的地面数据集。
", "ds_source": "2008年03月12日，在阿柔样方1、阿柔样方2和阿柔样方3开展了Envisat ASAR数据的地面同步观测试验。ASAR数据为AP模式，VV/VH极化组合方式，过境时间约为11:29BJT。阿柔样方2由于靠近河谷温度较低，积雪尚未融化，因此主要开展积雪参数的同步观测试验，而阿柔样方1和阿柔样方3积雪已消融，主要开展土壤冻融状况和土壤水分的同步观测试验。
", "ds_process_way": "在阿柔样方1，采用POGO便携式土壤水分传感器获得土壤温度、土壤体积含水量、损耗正切、土壤电导率、土壤复介电常数实部及虚部；ML2X土壤水分速测仪获得土壤体积含水量；PR2土壤剖面水分速测仪获得10cm、20cm、30cm、40cm、60cm及100cm土壤体积含水量剖面；针式温度计获得0-5cm平均土壤温度；并采用100cm^3环刀取土经烘干获得土壤重量含水量、土壤容重及体积含水量。\n
\n在阿柔样方2，开展了与ASAR同步的积雪参数观测，包括卫星过境时同步的雪表面温度观测（采用热红外温度枪测量），分层雪层温度观测（采用针式温度计测量），雪粒径观测（采用手持式显微镜测量），雪密度观测（采用铝盒方式测量），以及雪表面和雪土界面同步温度测量（采用热红外温度枪测量）；积雪光谱观测（采用ASD光谱仪测量）；积雪反照率观测（采用总辐射表测量）。 \n
\n在阿柔样方3，采用WET土壤水分速测仪测量土壤体积含水量、电导率、土壤温度及土壤复介电常数实部；针式温度计（#5和#7）获得0-5cm平均土壤温度；手持式红外温度计（#5）获得地表辐射温度；并采用100cm^3环刀取土经烘干获得土壤重量含水量、土壤容重及体积含水量。
", "ds_quality": "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,阿柔加密观测站,上游寒区水文实验站", "ds_acq_lon_east": 100.91666666666667, "ds_acq_lat_south": 38.016666666666666, "ds_acq_lon_west": 100.66666666666667, "ds_acq_lat_north": 38.11666666666667, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 719851979, "ds_files_count": 2, "ds_format": "excel", "ds_space_res": null, "ds_time_res": "时", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "65df78a6-6597-499c-b02c-8964b0789b3c.jpg", "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.db1739.2022", "subject_codes": [ "170.45" ], "quality_level": 3, "publish_time": "2021-09-14 09:57:50", "last_updated": "2023-09-04 17:50:11", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.NIEER.2021.8", "i18n": { "en": { "title": "Heihe River Integrated Remote Sensing joint experiment: ENVISAT ASAR ground synchronous observation data set in ARW encrypted observation area (March 12, 2008)", "ds_format": "Excel", "ds_source": "
On March 12, 2008, the ground synchronous observation test of ENVISAT ASAR data was carried out in ajoufang 1, ajoufang 2 and ajoufang 3. ASAR data is AP mode, VV / VH polarization combination mode, and the transit time is about 11:29bjt. Due to the low temperature close to the river valley and the snow has not melted, the Airou sample 2 mainly carries out the synchronous observation test of snow parameters, while the snow of Airou sample 1 and Airou sample 3 has melted, and mainly carries out the synchronous observation test of soil freezing and thawing status and soil moisture", "ds_quality": "
Good data quality", "ds_ref_way": "", "ds_abstract": "
On March 12, 2008, the ground synchronous observation test of ENVISAT ASAR data was carried out in ajoufang 1, ajoufang 2 and ajoufang 3. ASAR data is AP mode, VV / VH polarization combination mode, and the transit time is about 11:29bjt. Due to the low temperature close to the river valley and the snow has not melted, the Airou sample 2 mainly carries out the synchronous observation test of snow parameters, while the snow of Airou sample 1 and Airou sample 3 has melted, and mainly carries out the synchronous observation test of soil freezing and thawing status and soil moisture.\n
\nA rou sample 1, a rou sample 2 and a rou sample 3 are 4grid × 4grid, 30m per grid × 30m。 Ring knife soil sampling is only carried out at the center point of each grid, and other measurements are carried out at the center point and corner point of each grid.\n
\nIn a rou sample 1, the real and imaginary parts of soil temperature, soil volume water content, loss tangent, soil conductivity and soil complex dielectric constant were obtained by pogo portable soil moisture sensor; Ml2x soil moisture meter obtains soil volume water content; The PR2 soil profile moisture meter obtains 10cm, 20cm, 30cm, 40cm, 60cm and 100cm soil volume moisture content profiles; Needle thermometer to obtain 0-5cm average soil temperature; The soil is taken with a 100cm ^ 3 ring knife and dried to obtain the soil weight water content, soil bulk density and volume water content.\n
\nSnow parameter observation synchronized with ASAR was carried out in arxo quadrat 2, including synchronous snow surface temperature observation during satellite transit (measured by thermal infrared temperature gun), layered snow layer temperature observation (measured by needle thermometer), snow particle size observation (measured by hand-held microscope), snow density observation (measured by aluminum box), And synchronous temperature measurement of snow surface and snow soil interface (measured by thermal infrared temperature gun); Snow spectral observation (measured by ASD spectrometer); Snow albedo observation (measured by total radiometer).\n
\nIn a rou quadrat 3, wet soil moisture meter was used to measure the volume water content, conductivity, soil temperature and the real part of soil complex dielectric constant; Needle thermometers (#5 and #7) obtain an average soil temperature of 0-5cm; Hand held infrared thermometer (#5) to obtain surface radiation temperature; The soil is taken with a 100cm ^ 3 ring knife and dried to obtain the soil weight water content, soil bulk density and volume water content. For the surface roughness information, please refer to the metadata of \"Heihe integrated remote sensing joint test: surface roughness data set of Aru encrypted observation area\". In addition, ground penetrating radar synchronous observation was also carried out in ajoufang 1.\n
This data can provide a basic ground data set for developing and verifying the algorithm of active microwave remote sensing to retrieve soil moisture and freezing and thawing state, and using GPR data to retrieve soil moisture and freezing depth
", "ds_time_res": "时", "ds_acq_place": "Heihe River Basin, a rou densification observation station, upstream cold region hydrological Experiment Station", "ds_space_res": "", "ds_projection": "", "ds_process_way": "In a rou sample 1, the real and imaginary parts of soil temperature, soil volume water content, loss tangent, soil conductivity and soil complex dielectric constant were obtained by pogo portable soil moisture sensor; Ml2x soil moisture meter obtains soil volume water content; The PR2 soil profile moisture meter obtains 10cm, 20cm, 30cm, 40cm, 60cm and 100cm soil volume moisture content profiles; Needle thermometer to obtain 0-5cm average soil temperature; The soil is taken with a 100cm ^ 3 ring knife and dried to obtain the soil weight water content, soil bulk density and volume water content.\n
\nSnow parameter observation synchronized with ASAR was carried out in arxo quadrat 2, including synchronous snow surface temperature observation during satellite transit (measured by thermal infrared temperature gun), layered snow layer temperature observation (measured by needle thermometer), snow particle size observation (measured by hand-held microscope), snow density observation (measured by aluminum box), And synchronous temperature measurement of snow surface and snow soil interface (measured by thermal infrared temperature gun); Snow spectral observation (measured by ASD spectrometer); Snow albedo observation (measured by total radiometer).\n
\nIn a rou quadrat 3, wet soil moisture meter was used to measure the volume water content, conductivity, soil temperature and the real part of soil complex dielectric constant; Needle thermometers (#5 and #7) obtain an average soil temperature of 0-5cm; Hand held infrared thermometer (#5) to obtain surface radiation temperature; The soil is taken with a 100cm ^ 3 ring knife and dried to obtain the soil weight water content, soil bulk density and volume water content", "ds_ref_instruction": "" } }, "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": [ "航天遥感", "土壤", "土壤冻结深度", "微波遥感", "地表辐射温度", "反照率", "雪粒径", "地表辐射特性", "土壤湿度" ], "ds_subject_tags": [ "地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "上游寒区水文试验区", "阿柔加密观测区", "黑河流域" ], "ds_time_tags": [ 2008 ], "ds_contributors": [ { "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": "梁继", "email": "leung@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": "马明国", "email": "mmg@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": "舒乐乐", "email": "lele.shu@gmail.com", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" }, { "true_name": "王建华 ", "email": "jhwang@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": "王旭峰", "email": "wangxufeng@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": "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_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" }