{
    "created": "2025-11-05 16:19:16",
    "updated": "2026-05-09 18:30:28",
    "id": "54598b11-8273-4ba5-9b0d-942d811ccd05",
    "version": 3,
    "ds_topic": null,
    "title_cn": "新疆10m水体悬浮物浓度数据集（2022年4-10月）",
    "title_en": "",
    "ds_abstract": "<p>本数据采用2022年4-10月哨兵2号光学卫星数据为数据源，采样随机森林回归（RFR）方法构建新疆湖泊悬浮物浓度遥感估算模型。数据为CGCS2000坐标系阿伯斯投影，精度为10米。</p>",
    "ds_source": "<p>采用2022年4-10月哨兵2号光学卫星数据为数据源</p>",
    "ds_process_way": "<p>使用具有较好辐射性能的Sentinle 2 A/B MSI。从欧空局哥白尼数据开放中心获取L1C数据。采用欧空局提供的SEN2COR算法进行大气校正。但是SEN2COR为陆地大气校正算法，需要针对进一步去除天空光、太阳耀斑和残余气溶胶散射的影响。采样随机森林回归（RFR）方法构建水质参数模型。通过调整输入算法的最佳输入变量，各算法最优超参数通过格网化搜索方法获得。</p>",
    "ds_quality": "<p>利用大量野外调查和星地同步数据进行模型研究，结果表明RFR悬浮物浓度算法精度较高，不确定性为（ϵ）为24.29%，偏差（β）为6.77%，斜率为0.90，均方根对数误差为0.219。</p>",
    "ds_acq_start_time": null,
    "ds_acq_end_time": null,
    "ds_acq_place": "",
    "ds_acq_lon_east": 96.44417,
    "ds_acq_lat_south": 34.2925,
    "ds_acq_lon_west": 73.299446,
    "ds_acq_lat_north": 50.203056,
    "ds_acq_alt_low": null,
    "ds_acq_alt_high": null,
    "ds_share_type": "在线下载",
    "ds_total_size": 4207175868,
    "ds_files_count": 19,
    "ds_format": "栅格",
    "ds_space_res": "10米",
    "ds_time_res": "月",
    "ds_coordinate": "CGCS2000",
    "ds_projection": "Albers投影",
    "ds_thumbnail": "54598b11-8273-4ba5-9b0d-942d811ccd05.jpg",
    "ds_thumb_from": 2,
    "ds_ref_way": "",
    "paper_ref_way": "",
    "ds_ref_instruction": "数据来源引用：新疆10m水体悬浮物数据集（2022年4-10月）来源于第三次新疆综合科学考察专项 \"空天地网一体化综合科考监测体系建设(2021xjkk1400)\"",
    "ds_from_station": null,
    "organization_id": "a5877b42-96ea-4f13-af7e-246f355413d6",
    "doi_value": "",
    "subject_codes": [
        "170.45"
    ],
    "quality_level": 1,
    "publish_time": "2025-12-04 19:11:20",
    "first_publish_time": null,
    "last_updated": "2026-01-21 10:24:12",
    "protected": false,
    "protected_to": null,
    "lang": "zh",
    "cstr": "33110.11.XIEG.xjsedata.2022.00000111",
    "license": null,
    "extra": null,
    "files_shape": [
        {
            "name": "2021xjkk1400-78-2023031078",
            "size": null,
            "is_dir": true
        }
    ],
    "features": null,
    "data_level": 0,
    "ds_topic_tags": [
        "水体悬浮物浓度"
    ],
    "ds_subject_tags": [
        "地理学"
    ],
    "ds_class_tags": [],
    "ds_locus_tags": [
        "新疆"
    ],
    "ds_time_tags": [
        2022
    ],
    "ds_contributors": [
        "刘铁",
        "段洪涛"
    ],
    "ds_meta_authors": [
        "段洪涛"
    ],
    "ds_managers": [
        "李锦"
    ],
    "category": "哨兵"
}