Replication Data for: MRO MARCI Mars Daily Global Maps V2
收藏DataONE2023-04-27 更新2024-06-08 收录
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This dataset replicates the standard color maps of the Version 2 MRO MARCI Mars Daily Global Maps (MDGMs) delivered to the NASA Planetary Data System (PDS) Imaging Node, but in JPEG format. Each map 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. This dataset contains the standard resolution (0.1 degree longitude by 0.1 degree latitude, covering 180W-180E, 90S-90N) color MDGMs for MARCI subphases from P01 to K11 (Mars Year 28-34, data collected during 2006-2018). The maps are organized into \"P\" (for P01-P22), \"B\" for (B01-B22), \"G\" (for G01-G23), \"D\" (for D01-D22), \"F\" (for F01-F23), \"J\" (for J01-J22) and \"K\" (for K01-K11) folders. The folders are tarred and gzipped. 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 Notes associated with this dataset provides additional information. The MDGMs in TIFF format, maps for 7 individual MARCI camera filters, 0.05 degree by 0.05 degree visible and color maps, and more information can be found in the original archive bundle at NASA's PDS Annex Astropedia website when the data are appended: https://astrogeology.usgs.gov/search/map/Mars/MarsReconnaissanceOrbiter/MARCI/MARS-MRO-MARCI-Mars-Daily-Global-Maps. For users' convenience, the documents (readme.pdf, processing.pdf and errata.pdf) for the PDS4 archive are replicated here. The MDGMs are intended for a quick look of time-variable phenomena on Mars from day to day. The color of MDGMs results from an arbitrary color scheme that is applied across all maps, but users can apply their own color stretch using image manipulating softwares. In addition to the JPEG images in the v2p1_X.tar.gz files, MDGMs are also provided in PNG format in the png_Xxx_Xyy.tar.gz files, where Xxx and Xyy denote the start and end subphases contained within the corresponding files. As png file size is larger than jpg file size, each mission phase X is split into 2 segments. NOTE: the (0,0) pixel is at the south pole. Depending on the software used, the image may need to be flipped vertically so that the displayed map has north pole at the top and south pole at the bottom. For example, in IDL, the (0,0) pixel usually displays at the lower left corner, but in python matplotlib it is usually at the upper left corner.
创建时间:
2023-11-23



