swissEO VHI Card of the VHI

Map of vegetation conditions based on the VHI (Vegetation Health Index) derived from satellite data (AVHRR, VIIRS, Landsat 4,5,7-9, and Sentinel-2) at different spatial resolutions summarized at an aggregated resolution of ten meters. The VHI consists of two components: one part (VCI - Vegetation Condition Index) reflects the local biophysical characteristics of vegetation, and the other part (TCI - Thermal Condition Index) characterizes climatic conditions (temperature). Both parts represent the current situation relative to a reference period. The VHI is combined for assessing drought - the lower the value, the stronger the drought and its impact on vegetation. The dataset was developed in collaboration with MeteoSwiss for the Federal Drought Portal. The data processing is still in the commission phase (set-up and validation) until the first quarter of 2025, so the data may be subject to change during this period. Contains modified Copernicus Sentinel data.本数据集为基于不同空间分辨率的卫星数据（AVHRR、VIIRS、Landsat 4、5、7-9及Sentinel-2）反演得到的植被健康指数（Vegetation Health Index, VHI）经聚合至10米统一空间分辨率后构建的植被状况地图。 植被健康指数（VHI）包含两个组分：其一为植被状况指数（Vegetation Condition Index, VCI），可反映植被的局地生物物理特征；其二为热状况指数（Thermal Condition Index, TCI），用于表征气候条件（气温）。两个组分均以参考时段为基准，反映当前的实际状态。 该指数可联合用于干旱评估，指数值越低，代表干旱程度及其对植被的影响越强。 本数据集由瑞士气象局（MeteoSwiss）合作开发，服务于联邦干旱门户网站（Federal Drought Portal）。 数据处理仍处于搭建与验证的验收阶段，将持续至2025年第一季度，因此在此期间数据可能发生变更。 本数据集包含经修改的哥白尼Sentinel数据。