Vineyard's Leaf Area / Photosynthesis Service – High Resolution

The Vineyard's Leaf Area / Photosynthesis Service provides information on the leaf area and photosynthesis status of vineyard fields for a user-selected period. Two products are delivered through this EO service: Leaf Area and Photosynthesis. For each product, one EO index has been selected as the most suitable to provide information on the corresponding variable. The Leaf Area Index (LAI) is used to provide information on leaf area, while the Fraction of Absorbed Photosynthetically Active Radiation (fAPAR) is used to provide information on photosynthesis. This EO service can provide leaf area and photosynthesis products at both High Resolution (HR) and Very High Resolution (VHR). The system selects the best input data from the available options based on the user’s preferences. For the HR option, both LAI and fAPAR products can be generated using either Sentinel-2 or Landsat 8/9 data. This service is part of the set of Earth Observation (EO) services developed in order to illustrate, test, validate and demonstrate the LEONSEGS capabilities. The defined use cases are implemented and tested in two Areas of Interest (AoIs), located in Spain and Austria. This service is only provided for the Spanish use case, focused on vineyard monitoring. This record provides examples of the outputs produced by the LEONSEGS system in response to a user requesting the Vineyard’s Leaf Area Status service at HR level. Outputs:• The Leaf Area Index (LAI), used to provide information on leaf area.• The Fraction of Absorbed Photosynthetically Active Radiation (fAPAR), used to provide the photosynthesis. For each EO index product, the following files are provided: - GeoTIFF raster containing the original index values - Categorized GeoTIFF raster - RGB visualization GeoTIFF - PNG legend associated with the RGB visualization - Raster footprint geometry (.wkt) - ISO 19115/19139 metadata (.xml) - STAC metadata (.geojson) The categorized values have been specifically adjusted for vineyard crops according to crop phenology; therefore, these values are not applicable to other crop types. For a given EO product, multiple examples may be available, representing the full range of satellite missions: Landsat 8, Landsat 9, Sentinel-2A, Sentinel-2B, and Sentinel-2C.葡萄园叶面积/光合服务可针对用户选定的时段，提供葡萄园地块的叶面积与光合状态相关信息。本地球观测（Earth Observation, EO）服务共提供两类产品：叶面积产品与光合产品。针对每类产品，均选取了适配对应变量的最优地球观测指数：叶面积指数（Leaf Area Index, LAI）用于表征叶面积信息，而吸收光合有效辐射占比（Fraction of Absorbed Photosynthetically Active Radiation, fAPAR）则用于表征光合状态。 本服务可提供高分辨率（High Resolution, HR）与超高分辨率（Very High Resolution, VHR）两类分辨率的叶面积与光合产品。系统将根据用户偏好从可用数据源中选取最优输入数据：对于高分辨率选项，可基于Sentinel-2或Landsat 8/9卫星数据生成LAI与fAPAR两类产品。 本服务属于为展示、测试、验证并演示LEONSEGS功能而开发的地球观测服务套件之一。预设的应用场景已在两处兴趣区域（Areas of Interest, AoIs）——西班牙与奥地利——完成部署与测试。本服务仅针对聚焦葡萄园监测的西班牙应用场景提供支持。 本记录展示了LEONSEGS系统响应用户高分辨率级别葡萄园叶面积状态服务请求时生成的输出示例。 输出内容包括： • 叶面积指数（Leaf Area Index, LAI）：用于表征叶面积信息 • 吸收光合有效辐射占比（Fraction of Absorbed Photosynthetically Active Radiation, fAPAR）：用于表征光合状态 针对每类地球观测指数产品，将提供以下文件： - 存储原始指数数值的GeoTIFF栅格文件 - 分类化GeoTIFF栅格文件 - 用于可视化的RGB合成GeoTIFF文件 - 与RGB可视化结果配套的PNG格式图例文件 - 栅格覆盖范围几何文件（.wkt） - 符合ISO 19115/19139标准的元数据文件（.xml） - 符合STAC标准的元数据文件（.geojson） 分类值已根据作物物候特性针对葡萄园作物进行专属调整，因此该分类值不适用于其他作物类型。 针对单类地球观测产品，可提供多组示例，覆盖全部可用卫星任务：Landsat 8、Landsat 9、Sentinel-2A、Sentinel-2B及Sentinel-2C。