MODIS/Terra Surface Reflectance Daily L2G Global 1km and 500m SIN Grid NRT

The MODIS/Terra Surface Reflectance Daily L2G Global 1km and 500m SIN Grid Near Real Time (NRT) product is an estimate of the surface spectral reflectance as it would be measured at ground level in the absence of atmospheric scattering or absorption. Low-level data are corrected for atmospheric gases and aerosols, yielding a level-2 basis for several higher-order gridded level-2 (L2G) and level-3 products. This product, with short name MOD09GA provides Bands 1-7 in a daily gridded L2G product in the Sinusoidal projection, which includes 500-meter reflectance values and 1-kilometer observation and geolocation statistics. 500-meter Science Data Sets provided by this product include reflectance for Bands 1-7, a quality rating, observation coverage, observation number, and 250-meter scan information. 1-kilometer Science Data Sets provided include number of observations, quality state, sensor angles, solar angles, geolocation flags, and orbit pointers.

MODIS/Terra地表反射率每日L2G全球1公里和500米SIN网格近实时（NRT）产品是对地表光谱反射率的估算，该估算值假定为在无大气散射或吸收的情况下，地面水平测量的结果。低层数据经过大气气体和气溶胶的校正，从而为多个高级次网格化L2G和L3级产品提供2级基础。该产品，简称MOD09GA，在正弦投影中提供每日网格化L2G产品中的1-7波段，其中包括500米反射率值以及1公里的观测和地理定位统计数据。由该产品提供的500米科学数据集包括1-7波段的反射率、质量评级、观测覆盖率、观测数量以及250米扫描信息。1公里科学数据集包括观测数量、质量状态、传感器角度、太阳角度、地理定位标志和轨道指针。

搜集汇总

背景与挑战

背景概述

该数据集是MODIS/Terra传感器的近实时每日地表反射率产品，提供全球范围的500米和1公里分辨率数据，经过大气校正以消除散射和吸收影响。它包含波段1-7的反射率值、质量评级、观测覆盖和地理定位统计，采用正弦投影网格，适用于环境监测和高级数据产品生成。