MRO MARCI Mars Daily Global Maps V2

This dataset contains the Version 2 MRO MARCI Mars Daily Global Maps (MDGMs) [Wang and Gonzalez Abad, 2021]. Each RGB color map (0.1 degree longitude by 0.1 degree latitude, covering 180W-180E, 90S-90N) was made from 13 consecutive sets of global map swaths taken during a time period of about a sol by the Mars Color Imager (MARCI) onboard the Mars Reconnaissance Orbiter (MRO) spacecraft. The MARCI mapping data have been collected since November 2006. The current MDGMs cover MARCI subphases from P01 to N14 (Mars Year 28-35, data collected during 2006-2021). New maps will be appended as they become available. The MDGMs in this release are organized into the "P" (for P01-P22), "B" for (B01-B22), "G" (for G01-G23), "D" (for D01-D22), "F" (for F01-F23), "J" (for J01-J22), "K" (for K01-K23) and "N" (for N01-N14) MARCI phase folders in time order. The folders are tarred and gzipped. The MDGMs before subphase K11 in TIFF format with both 0.1x0.1 degree and 0.05x0.05 degree resolutions are also archived at the Planetary Data System (PDS) Annex Astropedia (https://astrogeology.usgs.gov/search/map/mars_mro_marci_daily_global_weather_maps_pds4_archive).

Information for the Mars year and solar longitude (Ls) value of each MDGM can be found from a .txt file within each subphase folder. The list of images used to construct the MDGMs can be found in the list/ subdirectory of each subphase folder. The MARCI filenames can be used to obtain more information (e.g., imaging time, dimension, etc.) from the cumindex.tab file in the MARCI archive released by the PDS. The time range covered by each subphase can be found in the summary_subphases.txt file. The documents (readme.pdf, processing.pdf and errata.pdf, replicated from the PDS) and Notes associated with this dataset provide additional information.

The MDGMs are intended for a quick look of time-variable phenomena on Mars from day to day and for keeping a long-term record. The color of MDGMs results from an arbitrary color scheme that is applied across all maps, but users can apply their own color stretch. The MDGMs are provided in PNG format. Filenames are in the format of png_Xxx_Xyy.tar.gz, where X denotes MARCI mission phase, xx and yy denote the start and end subphases.

NOTE: the (0,0) pixel is at the south pole (90S, 180W). Depending on the software used, the image may need to be flipped.

搜集汇总

背景与挑战

背景概述

该数据集提供了火星勘测轨道飞行器（MRO）上的火星彩色成像仪（MARCI）收集的每日全球地图（MDGMs），覆盖2006年至2021年的数据。这些地图以PNG格式提供，旨在用于快速查看火星上的日变化现象和长期记录。数据集经过改进，减少了缺失数据和提高了地理定位的准确性。