A land surface phenology dataset for Central Asia derived from MODIS NIRv time series

This dataset presents land surface phenology (LSP) information (2001-2023) across Central Asia with a spatial resolution of 0.05°. Time series of near-infrared reflectance of vegetation (NIRv) from MODIS daily nadir BRDF-adjusted surface reflectance data are employed for the retrieval of LSP metrics.
The LSP metrics included in this dataset are as follows:
1. Date of the start of the growing season (SOS), estimated using the 20% seasonal amplitude of NIRv during the greenup period.
2. Date of the peak of NIRv during the growing season (POS).
3. Date of the end of the growing season (EOS), estimated using the 20% seasonal amplitude of NIRv during the senescence period.
4. The peak value of NIRv (NIRv_PEAK).
5. The minimum NIRv value on the left side of the growing cycle (NIRv_MINL).
6. The minimum NIRv value on the right side of the growing cycle (NIRv_MINR).
7. The mean NIRv during the growing season (NIRv_MEAN).

本数据集涵盖中亚区域2001年至2023年的地表物候（Land Surface Phenology, LSP）信息，空间分辨率为0.05°。本数据集采用中分辨率成像光谱仪（MODIS）每日天底方向双向反射分布函数（Bidirectional Reflectance Distribution Function, BRDF）校正地表反射率数据中的植被近红外反射率（Near-infrared Reflectance of Vegetation, NIRv）时间序列，用于反演地表物候指标。

本数据集包含的地表物候指标如下：
1. 生长季起始日期（Start of the Growing Season, SOS）：通过返青期NIRv的20%季节振幅估算得到。
2. 生长季内NIRv峰值日期（Peak of NIRv during the Growing Season, POS）。
3. 生长季结束日期（End of the Growing Season, EOS）：通过枯黄期NIRv的20%季节振幅估算得到。
4. NIRv峰值（NIRv_PEAK）。
5. 生长周期左侧的NIRv最小值（NIRv_MINL）。
6. 生长周期右侧的NIRv最小值（NIRv_MINR）。
7. 生长季内NIRv平均值（NIRv_MEAN）。