{
  "schema": "unit4120603450_swy2020_local_public_style_package/1",
  "status": "ready_for_local_browser_preview_not_published",
  "created_utc": "2026-10-23T13:35:15.984817+00:00",
  "coverage_scope": "unit_4120603450_swy2020_conditional",
  "title": "4120603450 单元 · 2020 年降水驱动水文条件试算",
  "year": 2020,
  "model": "InVEST Seasonal Water Yield",
  "model_version": "3.20.2",
  "scenario": "projection_budget1e-4",
  "scientifically_calibrated": false,
  "is_full_ningxia_result": false,
  "B_reporting_approved": false,
  "grid": {
    "crs": "EPSG:32648",
    "transform": [
      250,
      0,
      577750,
      0,
      -250,
      3933750
    ],
    "width": 156,
    "height": 148,
    "resolution_m": 250,
    "dtype": "float64",
    "nodata": -9999,
    "bands": 1
  },
  "bounds": [
    105.85422475439604,
    35.206977903521874,
    106.28792015208373,
    35.54434579172033
  ],
  "bounds_crs": "EPSG:4326",
  "raster_projected_bounds": [
    577750.0,
    3896750.0,
    616750.0,
    3933750.0
  ],
  "reporting_bounds": [
    106.08288833407929,
    35.3627711,
    106.17499967159584,
    35.4500005065825
  ],
  "reporting": {
    "positive_intersection_cells": 497,
    "geometry_area_m2": 25745595.529472284,
    "fraction_weighted_area_m2": 25745595.529472392,
    "fraction_weighted_area_km2": 25.745595529472393,
    "fraction_minus_geometry_area_m2": 1.0803341865539551e-07,
    "absolute_area_tolerance_m2": 0.0001,
    "fraction_min": 0.0,
    "fraction_max": 1.0
  },
  "bounds_method": "bounds: complete TIFF rectangle, edges densified255 points; reporting_bounds: extrema of every transformed original polygon vertex; no geometry simplification.",
  "statistical_weight": "original projected report_fraction ×62500m²; TIFF depths remain unscaled",
  "climate_native_resolution_degrees": 0.1,
  "climate_native_cells": 20,
  "daily_P_S_projection_budget_mm": 0.0001,
  "projection_budget_predeclared": true,
  "projection_budget_is_measurement_accuracy": false,
  "maximum_actual_daily_projection_adjustment_mm": 2.9802322387695312e-05,
  "stats": {
    "P": {
      "unit": "mm/2020",
      "fraction_area_m2": 25745595.529472392,
      "area_weighted_mean_mm": 849.0118496987159,
      "model_depth_area_equivalent_m3": 21858315.682072345,
      "reporting_positive_intersection_cells": 497,
      "negative_reporting_cells": 0,
      "minimum_mm": 837.9929809570312,
      "maximum_mm": 905.8015747070312,
      "depth_area_equivalent_is_measured_storage_or_streamflow": false,
      "values_clipped": false
    },
    "AET": {
      "unit": "mm/2020",
      "fraction_area_m2": 25745595.529472392,
      "area_weighted_mean_mm": 426.0492991443134,
      "model_depth_area_equivalent_m3": 10968892.93138468,
      "reporting_positive_intersection_cells": 497,
      "negative_reporting_cells": 0,
      "minimum_mm": 388.5343933105469,
      "maximum_mm": 648.0999145507812,
      "depth_area_equivalent_is_measured_storage_or_streamflow": false,
      "values_clipped": false
    },
    "L": {
      "unit": "mm/2020",
      "fraction_area_m2": 25745595.529472392,
      "area_weighted_mean_mm": 374.7324276449275,
      "model_depth_area_equivalent_m3": 9647709.513923582,
      "reporting_positive_intersection_cells": 497,
      "negative_reporting_cells": 13,
      "minimum_mm": -414.8081970214844,
      "maximum_mm": 483.0024719238281,
      "depth_area_equivalent_is_measured_storage_or_streamflow": false,
      "values_clipped": false
    },
    "QF": {
      "unit": "mm/2020",
      "fraction_area_m2": 25745595.529472392,
      "area_weighted_mean_mm": 48.23012801546942,
      "model_depth_area_equivalent_m3": 1241713.3682209507,
      "reporting_positive_intersection_cells": 497,
      "negative_reporting_cells": 0,
      "minimum_mm": 8.0173978805542,
      "maximum_mm": 837.992919921875,
      "depth_area_equivalent_is_measured_storage_or_streamflow": false,
      "values_clipped": false
    }
  },
  "P_AET_L_QF_must_not_be_added_as_one_service": true,
  "negative_L": {
    "cells": 13,
    "all_are_streams": true,
    "all_reporting_streams_are_negative": true,
    "fraction_area_m2": 642838.2358319878,
    "fraction_of_reporting_area": 0.02496886254179266,
    "monthly_QF_equals_rounded_P_all12": true,
    "stored_annual_P_minus_QF_max_abs_mm": 6.103515625e-05,
    "stored_annual_L_plus_AET_max_abs_mm": 3.0517578125e-05,
    "interpretation": "Native stream quickflow branch sets QF=P monthly; with L=P-QF-AET, these negative L values reflect this algorithm branch and upstream-supported AET. They are not direct evidence of actual water deficit or ecosystem degradation."
  },
  "MOD16_annual_intercomparison": {
    "status": "passed_independent1351_pair_and_native_support_recalculation",
    "branches": {
      "primary": {
        "common_area_m2": 25745595.529471558,
        "pairs": 1351,
        "MODIS_native_cells": 165,
        "SWY_cells": 497,
        "means_mm": {
          "P": 849.0118496987159,
          "AET": 426.0492991443137,
          "L": 374.7324276449262,
          "QF": 48.23012801547034,
          "ET": 671.8500646552535
        },
        "ET_minus_AET_bias_mm": 245.80076551093987,
        "MAE_mm": 245.80076551093987,
        "RMSE_mm": 248.40279352486112,
        "negative_ET_minus_AET_native_cells": 0,
        "same_support_negative_L_native_cells": 3
      },
      "high_quality": {
        "common_area_m2": 0,
        "pairs": 0,
        "MODIS_native_cells": 0,
        "SWY_cells": 0,
        "means_mm": {
          "P": null,
          "AET": null,
          "L": null,
          "QF": null,
          "ET": null
        },
        "ET_minus_AET_bias_mm": null,
        "MAE_mm": null,
        "RMSE_mm": null
      }
    },
    "difference_direction": "MOD16 ET minus model AET",
    "highQC_nulls_preserved": true,
    "calibration_or_ground_truth_validation": false
  },
  "arithmetic_review": {
    "status": "passed_actual_result_arithmetic_and_support_review",
    "blocker_count": 0,
    "sha256": "2bee2fa0ae54e5c03ffc25cb47cb71c3ed5d51d8c0787bcf9b0fa14f987d8513",
    "path": "/data/results/unit_4120603450_swy2020_v1/provenance/independent-review.json",
    "not_observational_validation": true
  },
  "geometry_verification": {
    "feature_count": 1,
    "parts_holes_ring_vertices": [
      {
        "type": "Polygon",
        "parts": 1,
        "holes": [
          0
        ],
        "ring_vertices": [
          [
            54
          ]
        ]
      }
    ],
    "all_original_vertices_retained": true,
    "simplification": false,
    "roundtrip_max_coordinate_error_m": 1.3969838619232178e-09
  },
  "licensed_sources": [
    {
      "title": "CLCD v1.0.5",
      "dataset_id": "CLCD",
      "version": "1.0.5",
      "url": "https://zenodo.org/records/18180184",
      "license": "CC BY 4.0",
      "license_url": "https://creativecommons.org/licenses/by/4.0/",
      "attribution": "Jie Yang and Xin Huang, CLCD v1.0.5 (2026), doi:10.5281/zenodo.18180184.",
      "modifications": "2020 CLCD classes clipped and aggregated to 250m dominant land-cover model classes; raw CLCD not included."
    },
    {
      "title": "ERA5-Land Hourly",
      "dataset_id": "ECMWF/ERA5_LAND/HOURLY",
      "url": "https://developers.google.com/earth-engine/datasets/catalog/ECMWF_ERA5_LAND_HOURLY",
      "license": "Copernicus C3S/CAMS terms linked by official GEE catalog",
      "license_url": "https://apps.ecmwf.int/datasets/licences/copernicus/",
      "attribution": "Contains modified Copernicus Climate Change Service Information 2020. Project processing year: 2026.",
      "disclaimer": "Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus Information or Data this publication contains.",
      "modifications": "Native hourly reanalysis decoded/deaccumulated and grouped into UTC+8 days; conditional P/S physical projection with 1e-4 mm/day budget; daily FAO-56 ET0 and monthly P/ET0/events; 0.1 degree climate-cell values mapped onto 250 m model cells; SWY model outputs. No new fine-scale climate observations."
    },
    {
      "title": "HiHydroSoil v2.0",
      "dataset_id": "HiHydroSoil_v2",
      "version": "2.0",
      "url": "https://www.futurewater.nl/solutions/hihydrosoil/",
      "license": "CC BY 4.0",
      "license_url": "https://creativecommons.org/licenses/by/4.0/",
      "attribution": "Simons, G.W.H., R. Koster, P. Droogers (2020). HiHydroSoil v2.0: High Resolution Soil Maps of Global Hydraulic Properties. FutureWater Report 213.",
      "modifications": "Undrained hydrologic soil-group candidate mapped to the common 250 m SWY grid; original soil data not redistributed."
    },
    {
      "title": "BasinATLAS v1 level 12",
      "dataset_id": "BasinATLAS",
      "version": "1",
      "url": "https://www.hydrosheds.org/hydroatlas",
      "license": "CC BY 4.0",
      "license_url": "https://creativecommons.org/licenses/by/4.0/",
      "attribution": "Linke et al. (2019), Global hydro-environmental sub-basin and river reach characteristics at high spatial resolution, doi:10.1038/s41597-019-0300-6.",
      "modifications": "Unit4120603450 intersected with the current OSM research boundary; reporting geometry transformed to WGS84 without simplifying or removing vertices, parts or holes."
    },
    {
      "title": "NASA / USGS SRTMGL1 v003",
      "dataset_id": "USGS/SRTMGL1_003",
      "version": "003",
      "url": "https://developers.google.com/earth-engine/datasets/catalog/USGS_SRTMGL1_003",
      "license": "Official GEE terms link to JPL image-use policy; no blanket CC license asserted",
      "license_url": "https://www.jpl.nasa.gov/jpl-image-use-policy/",
      "attribution": "Courtesy NASA/JPL-Caltech; NASA / USGS SRTMGL1 v003.",
      "modifications": "Static DEM processed for a shared model grid/routing surface and climate-cell elevation; source DEM not redistributed. Attribution is not endorsement; third-party exceptions in the linked policy remain applicable."
    },
    {
      "title": "OpenStreetMap Ningxia relation913101",
      "dataset_id": "OSM relation913101",
      "url": "https://www.openstreetmap.org/relation/913101",
      "license": "ODbL-1.0",
      "license_url": "https://opendatacommons.org/licenses/odbl/1-0/",
      "attribution": "© OpenStreetMap contributors",
      "modifications": "Current geometry acquired2026-10-23, used to intersect BasinATLAS unit4120603450. Derived boundary geometry database retains ODbL notice; not a historical or legal administrative boundary."
    }
  ],
  "output_license_grant": null,
  "license_note": "各原始来源条款分别适用。报告区派生边界保留 ODbL 与 BasinATLAS CC BY 署名；不另行声明统一成果许可。",
  "limitations": [
    "报告区仅25.7456km²、497个正交叠格；完整栅格矩形1443km²不是统计分母，不代表宁夏全区。",
    "当前OSM边界于2026-10-23获取；2020是模型输入年份，不是历史或法定边界年份。",
    "250m是计算格；气象来自20个原生0.1°格，不能解释为250m气象观测。",
    "仅2020年未率定、降水驱动的条件试算；HiHydroSoil为候选输入；未显式输入灌溉、地下水与融雪过程。",
    "P为降水，AET为实际蒸散模型量，L为局地补给代理，QF为快流模型量；四项分别展示，不能相加称为水源涵养。",
    "13个负L均为原生流道格，面积占2.4969%；保留负值。这与QF=P、L=P−QF−AET算法分支有关，不能直接认定现实亏水或生态退化。",
    "1e-4mm/day是事先声明的P/S物理投影预算，不是观测误差或事后放宽；数值一致性不等于科学率定。",
    "MOD16 ET−AET均差245.8008mm；高质量分支共同面积为0且统计保持null。这是产品对照，不能当作率定、灌溉量或因果解释。",
    "B及累积中间量不作为服务成果展示；深度乘面积是模型等效量，不是实测蓄水或出口流量。"
  ]
}