2018-2019年波多黎各VNP46A2每日质量标志掩码数据集

数据集包括波多黎各的八个行政区的每日质量标志掩码数据，时间范围为2018年1月21日至2019年1月20日。这八个行政区分别为阿雷西博、巴亚蒙、卡瓜斯、卡罗利纳、瓜亚马、乌马考、庞塞和圣胡安，经纬度范围为（-66°46′12″~ -65°52′37″, 18°18′54″~ 17°52′58″）。数据来源于https://ladsweb.modaps.eosdis.nasa.gov/search/网站，对原始数据进行了格式转换，将h5格式转换为Tiff格式。从VNP46A1中提取月光照度分数和太阳天顶角波段信息，从VNP46A2中提取强制性质量标志、云层掩码、雪覆盖标识波段信息。最终通过逐像素对每个质量标志求交集并裁剪生成可以筛选出可靠质量的每日质量标志掩码数据。This dataset contains daily quality flag mask data for eight administrative districts in Puerto Rico, spanning from January 21, 2018 to January 20, 2019. The eight administrative districts are Arecibo, Bayamón, Caguas, Carolina, Guayama, Humacao, Ponce, and San Juan, with a spatial coverage of (-66°46′12″ ~ -65°52′37″, 18°18′54″ ~ 17°52′58″). The raw data was sourced from the website https://ladsweb.modaps.eosdis.nasa.gov/search/, and format conversion was conducted to convert the original h5 format data to TIFF format. Specifically, moonlight illumination score and solar zenith angle band information were extracted from the VNP46A1 dataset, while mandatory quality flags, cloud mask, and snow cover identification band information were extracted from the VNP46A2 dataset. Finally, daily quality flag mask data capable of screening out reliable quality samples were generated by performing pixel-wise intersection of each quality flag and cropping operations.

搜集汇总

背景与挑战

背景概述

该数据集包含2018年1月21日至2019年1月20日期间波多黎各八个行政区域的每日质量标志掩码数据，基于NASA的VNP46A1和VNP46A2产品提取月亮照度分数、太阳天顶角、质量标志等信息，通过像素级判断生成可用于筛选可靠质量的数据，空间分辨率为500米，适用于遥感信息工程研究。