2008年6月16日和7月1日在临泽站加密观测区开展了冠顶入射辐射，冠顶反射辐射，地表入射辐射以及地表反射辐射的观测， 并得到不同地表类型的PAR和FPAR日内连续变化，为航空和卫星的地表Fpar反演算法的发展和验证提供数据。\n
\n测量仪器：3415系列光量子计（3个探头）。\n
\n观测时间：每次观测的持续时间为6小时，从上午9点至下午5点，时间间隔为10分钟。\n
\n观测样地和观测时间：6月16日在临泽站内的玉米地和向日葵地进行观测；7月1日在五里墩农田样方进行观测。\n
\n测量内容：将线性光量子计置于冠层上方15cm左右，向上测量冠层顶光合有效辐射冠层入射量（PARci），光量子计与太阳入射方向垂直投影线呈0°、30°、45°、60°、90°五个角度，向下测量光合有效辐射冠层反射量（PARcr）；将光量子计置于地面上方15cm左右，向上测量光合有效辐射地面上方入射量（PARgi），向下测量光合有效辐射地面上方反射量（PARgr）。PAR=(PARci- PARcr)-( PARgi- PARgr)；Fpar =PAR/ PARci。\n
\n数据存储：Excel格式，原始数据中还包含了观测点的照片。
", "ds_source": "2008年6月16日和7月1日在临泽站加密观测区开展了冠顶入射辐射，冠顶反射辐射，地表入射辐射以及地表反射辐射的观测。", "ds_process_way": "
将线性光量子计置于冠层上方15cm左右，向上测量冠层顶光合有效辐射冠层入射量（PARci），光量子计与太阳入射方向垂直投影线呈0°、30°、45°、60°、90°五个角度，向下测量光合有效辐射冠层反射量（PARcr）；将光量子计置于地面上方15cm左右，向上测量光合有效辐射地面上方入射量（PARgi），向下测量光合有效辐射地面上方反射量（PARgr）。PAR=(PARci- PARcr)-( PARgi- PARgr)；Fpar =PAR/ PARci。
", "ds_quality": "数据质量良好
", "ds_acq_start_time": "2008-06-27 00:00:00", "ds_acq_end_time": "2008-07-12 00:00:00", "ds_acq_place": "黑河流域, 中游干旱区水文试验区, 临泽站加密观测区", "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": 27157219, "ds_files_count": 2, "ds_format": "excel", "ds_space_res": null, "ds_time_res": "2日", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "63bce628-1978-4670-a60b-2a1eac662c20.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.db1865.2022", "subject_codes": [ "170.4510" ], "quality_level": 3, "publish_time": "2022-03-15 15:32:48", "last_updated": "2025-06-30 16:06:29", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.NIEER.2021.1937", "i18n": { "en": { "title": "Joint experiment of Heihe comprehensive remote sensing: observation data set of daily variation of photosynthetic effective radiation ratio (FPAR) in intensive observation area of Linze station", "ds_format": "excel", "ds_source": "The observation of coronal incident radiation, coronal reflected radiation, surface incident radiation and surface reflected radiation was carried out in the intensive observation area of Linze station on June 16 and July 1, 2008.", "ds_quality": "
Good data quality
", "ds_ref_way": "", "ds_abstract": "On June 16 and July 1, 2008, the observation of coronal incident radiation, coronal reflected radiation, surface incident radiation and surface reflected radiation was carried out in the intensive observation area of Linze station, and the daily continuous changes of PAR and FPAR of different surface types were obtained, which provided data for the development and verification of surface FPAR inversion algorithm of aviation and satellite.\n
\nMeasuring instrument: 3415 series light quantum meter (3 probes).\n
\nObservation time: the duration of each observation is 6 hours, from 9 a.m. to 5 p.m., with an interval of 10 minutes.\n
\nObservation sample plot and observation time: on June 16, the observation was carried out in the corn field and sunflower field in Linze station; On July 1, the observation was conducted in wulidun farmland quadrat.\n
\nMeasurement content: place the linear light quantum meter about 15cm above the canopy, measure the incident amount of photosynthetic effective radiation (parci) on the canopy top upward, and measure the reflected amount of photosynthetic effective radiation (parcr) downward at five angles of 0 °, 30 °, 45 °, 60 ° and 90 ° perpendicular to the projection line of the solar incident direction; Place the optical quantum meter about 15cm above the ground, measure the incident amount of photosynthetic effective radiation above the ground (pargi) upward and the reflection amount of photosynthetic effective radiation above the ground (pargr) downward. PAR=(PARci- PARcr)-( PARgi- PARgr)； Fpar =PAR/ PARci.\n
\nData storage: in Excel format, the original data also includes photos of observation points
", "ds_time_res": "2日", "ds_acq_place": "Heihe River Basin, hydrological experimental area of arid area in the middle reaches, intensive observation area of Linze station", "ds_space_res": "", "ds_projection": "", "ds_process_way": "The linear light quantum meter is placed about 15cm above the canopy, and the incident amount of photosynthetic effective radiation (parci) on the canopy top is measured upward. The light quantum meter is at five angles of 0 °, 30 °, 45 °, 60 ° and 90 ° perpendicular to the solar incident direction, and the canopy reflection amount of photosynthetic effective radiation (parcr) is measured downward; Place the optical quantum meter about 15cm above the ground, measure the incident amount of photosynthetic effective radiation above the ground (pargi) upward and the reflection amount of photosynthetic effective radiation above the ground (pargr) downward. PAR=(PARci- PARcr)-( PARgi- PARgr)； Fpar =PAR/ PARci。
", "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": [ "地表入射辐射", "FPAR", "冠顶反射辐射", "地表反射辐射", "PAR", "冠顶入射辐射", "光量子计", "光合有效辐射", "光合作用", "冠层光谱", "植被" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "临泽站加密观测区", "中游干旱区水文试验区", "黑河流域" ], "ds_time_tags": [ 2008 ], "ds_contributors": [ { "true_name": "宋怡", "email": "songyi05@sohu.com", "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": "宋怡", "email": "songyi05@sohu.com", "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": "宋怡", "email": "songyi05@sohu.com", "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" }