中国区域500米NDVI旬合成产品（AQUA星）

产品介绍：MYDND1T即AQUA星中国500米 NDVI旬合成产品，是由MYDND1D计算得到，计算方法为取月内每十天的最大值。MYDND1D由MOD09GA经过拼接、切割、投影转换、单位换算等过程加工而成。命名规范如下：AAABBCD. EEEEEEEEE. CN.FFF.GG****，比如：中国每日温度合成命名为：MYDLT1D.20010101.CN.LTD.V1.TIF；AAA：卫星（MOD&MYD）；BB：参量（地表温度(LT)、NDV(ND)、EVI(EV)、SR（地表反射率））；C：分辨率（Q（250米）、H（500米）、1（1000米））；D：合成周期（D（每日）、F（5天合成），T（10天合成）、M（月合成）） l 注意：遇2月或大月，每月最后一个合成产品利用本月所有剩余天内的每日数据为输入。（比如平二月的5天合成产品实际数据输入为2月26、27、28三天）；CN：中国区域合成 EEEEEEE：年年年年天天天（2010001） 注意：合成产品以每个合成产品输入数据的第一天作为产品对应时间；FFF：参量 LTD：白天地表温度 LTN：夜间地表温度 QCD：白天质量评价文件 QCN：夜间质量评价文件；GG：版本号；****：文件类型（TIF、jpg、txt）。Product Introduction: MYDND1T, namely the AQUA Star China 500m NDVI dekadal composite product, is derived from MYDND1D. The calculation method is to take the maximum value over each 10-day window within a month. MYDND1D is processed from MOD09GA via geospatial workflows including mosaicking, clipping, projection transformation, unit conversion, and more. The naming convention follows the structure: AAABBCD.EEEEEEEE.CN.FFF.GG****. For reference, the daily land surface temperature composite product for China is named MYDLT1D.20010101.CN.LTD.V1.TIF. Details of each field are as follows: - AAA: Satellite platform identifier (MOD&MYD) - BB: Parameter code: LT for Land Surface Temperature, NDV/ND for Normalized Difference Vegetation Index (NDVI), EV/EVI for Enhanced Vegetation Index (EVI), SR for Surface Reflectance - C: Spatial resolution: Q for 250m, H for 500m, 1 for 1000m - D: Composite period: D for Daily, F for 5-day composite, T for 10-day (dekadal) composite, M for Monthly composite Note: For February or 31-day months, the final composite product of the month will use all remaining daily data within the current month as input. For example, the 5-day composite product of a common non-leap February uses daily data from February 26, 27, and 28 as its input. - CN: China regional composite product - EEEEEEE: Julian date in format YYYYDDD (e.g., 2010001). The corresponding timestamp of each composite product is defined as the first day of the daily input data used for generating that product. - FFF: Parameter code: LTD for Daytime Land Surface Temperature, LTN for Nighttime Land Surface Temperature, QCD for Daytime Quality Assessment File, QCN for Nighttime Quality Assessment File - GG: Version number - ****: File extension (TIF, JPG, TXT)

搜集汇总

背景与挑战

背景概述

该数据集是基于AQUA卫星的中国区域500米分辨率NDVI旬合成产品，通过取月内每十天最大值的方法从MYDND1D数据计算生成，覆盖中国区域，主要用于植被指数监测和分析。数据集包含516个GeoTiff格式的栅格文件，总存储容量为58 GB，适用于遥感研究和环境评估。