This directory contains the documentation on Matthews' Vegetation, Land Use, and Seasonal Albedo published in the Global Ecosystems Database:
*MATTHEWS VEGETATION, LAND USE, AND ALBEDO_help Global Ecosystems Database Disc A: Chapter 7 Matthews Vegetation, Land Use, and Seasonal Albedo Vegetation Type Cultivation Intensity Seasonal Albedo DATA-SET DESCRIPTION Data-Set Name: Matthews Vegetation, Land Use, and Seasonal Albedo Principal Investigator: Elaine Matthews NASA Goddard Institute for Space Studies Scientific Reference: (* reprint on CD-ROM) + Matthews, E., 1983. "Global vegetation and land use: New high resolution data bases for climate studies." Journal of Climatology and Applied Meteorology, vol. 22, pp. 474-487. SOURCE Source Data Citation: Matthews, E., 1983. Global Vegetation, Land-Use, and Seasonal Albedo [NASA Goddard Institute for Space Studies]. Digital Raster Data on a 1-degree Geographic (lat/long) 180x360 grid. Boulder, CO: National Center for Atmospheric Research. 9 track tape, 0.8 MB Contributor: Dr. Elaine Matthews NASA Goddard Space Flight Center, Institute for Space Studies 2880 Broadway New York, NY 10025 USA Distributor: NCAR Vintage: circa 1980 Lineage: (1) Principal Investigator: Elaine Matthews NASA Goddard Institute of Space Studies (2) Received from: Data Support Section National Center for Atmospheric Research Boulder, CO ORIGINAL DESIGN Variables: (1) Vegetation, representing natural (pre-agricultural) vegetation based on the UNESCO (1973) class system. (2) Cultivation Intensity derived from land use data, representing areal extent of presently cultivated land in the 1-degree cells. (3) Seasonal Albedo, as present integrated surface albedo for January, April, July, October for snow-free conditions except for permanently snow-covered continental ice, incorporating natural vegetation and cultivation characteristics from the vegetation and cultivation-intensity data sets. NOTE: Data are included for land areas only, including continental ice (Water, including oceans and lakes, are coded 0). Origin: digitized from numerous published sources and satellite imagery (see Primary Documentation) Geographic Reference: latitude/longitude Geographic Coverage: Global Maximum Latitude: +90 degrees (N) Minimum Latitude: -90 degrees (S) Maximum Longitude: +180 degrees (E) Minimum Longitude: -180 degrees (W) Geographic Sampling: integrated values for 1 degree grid cells Time Period: circa 1950's through 1970's Temporal Sampling: Modern composite of available data INTEGRATED DATA-SET Data-Set Citation: Matthews, E. 1992. Global Vegetation, Land-Use, and Seasonal Albedo. Digital Raster Data on a 1-degree Geographic (lat/long) 180x360 grid. In: Global Ecosystems Database Version 1.0: Disc A. Boulder, CO: NOAA National Geophysical Data Center. 6 independent single-attribute spatial layers on CD-ROM,1.6 MB. [first published in 1983] Analyst: Mark Ohrenschall Projection: Geographic (lat/long), GED window (see User's Guide). Spatial Representation: integrated values for 1-degree grid cells Temporal Representation: Modern composite Data Representation: (1) Vegetation Type: 1-byte integers: integrated type classes for 1-degree cells. (2) Cultivation Intensity: 1-byte integers: classes (0-5) of areal extent within 1-degree cells. (3) Seasonal Albedo: 2-byte integers: percent (x 100) integrated albedo. Layers and Attributes: 6 independent single-attribute spatial layers Compressed Data Volume: 45,646 bytes ADDITIONAL REFERENCES (* reprint on CD-ROM) + Matthews, E. 1983. "Vegetation, Land-Use and Seasonal Albedo Data Sets: Documentation of Archived Data Tape." NASA Technical Memorandum #86107. Matthews E., 1985. "Atlas of archived vegetation, land-use, and seasonal albedo data sets." NASA Technical Memorandum #86199. TECHNICAL REPORT Mark A. Ohrenschall NOAA National Geophysical Data Center Boulder, CO The Matthews data were in a lat/long projection on a one-degree grid bounded by 90 degrees North, 90 degrees South, 180 degrees West, and 180 degrees East. The data-sets consisted of three files, VEGTYPE, CULTINT, and ALBEDO. All files were in ASCII fixed field format, with cell sequencing scanning left to right, bottom to top in the one-degree grids. The VEGTYPE and CULTINT files consisted of a sequence of two-digit integers and the ALBEDO file consisted of a sequence of four-digit floating point numbers (2 decimal places). The four albedo grids were stacked together in the ALBEDO file. Programs were written to read each file and write the appropriate values into an IDRISI raster data file in ASCII (for inspection), and then converted to binary. All grids were then inverted to place North at the top. The four seasonal albedo files were then windowed from the stacked data file, multiplied by 100 and converted to byte-binary data types. The original numerical values are thus preserved, except for scaling of the albedos to allow byte storage. All final data files were inspected for agreement with the original data. *MATTHEWS VEGETATION, LAND USE, AND ALBEDO ANCILLARY ENVIRONMENTAL DATA Matthews Vegetation Type #*MATTHEWS VEGETATION TYPE Matthews Cultivation Intensity #\data\ncillary\macult.img Matthews Seasonal Albedo #*MATTHEWS SEASONAL ALBEDO Scanned Documentation #*MA SCANNED DOCUMENTATION *MA SCANNED DOCUMENTATION_help The scanned documentation noted here is contained in the \document directory on the CD-ROM as .gif files. These files can be read by any computer program that reads PC Paintbrushformat files. The GeoVu software provided on this CD-ROM contains such a utility. To use the GeoVu utility, merely select the appropriate file from this menu, using the "Open Data" option that you have been using to this point. If you are VERY NEW to GeoVu, you can open a file by 1. Selecting "File" from the options at the top of your screen. 2. After selecting "File" select "Open Data" from the options that appear in the pull-down menu. 3. Follow the hierarchy of menu paths to the data of your choice. 4. When the hierarchy leads you to a topic "Scanned Documentation" merely select that topic. The next topic should read "Page 1, Page 2,... etc." or "Paper 1 Page 1, Paper 1 Page 2, .... Paper 2 Page 1.... etc. You can select the pages manually, or create a "slide show" under the Utilities option at the top of the screen. The first time the .gif file displays it might be reduced in size. This is a "feature" of current versions of GeoVu that might be improved in the future. If you redisplay the image (by selecting "Search" from the options at the top of the screen, then "Create" from the menu thus pulled down, you can modify the parameter that sets the sampling rate from "n" [usually 2, 3, 4, or 5] to 1). This will give you full resolution display of the scanned documentation. It should be noted that this scanned documentation is a compromise. We originally attempted to use optical character recognition software to convert the scanned documentation to more usable text. However, the technology was too immature at the time of scanning (1992) to use successfully. Indeed, as of this writing (late 1995) the technology is still too immature for convenient application to this problem. Thus, we present the scanned documentation as images. NOTE: Many of the original documents are not copyright, and may be reproduced freely. However, several other documents ARE copyright. The National Geophysical Data Center has obtained permission to reproduce all documents with a valid copyright. However, this permission does not pass automatically to anyone else. Thus, though all of the data on this CD-ROM are unrestricted, much of the scanned documentation (which contains copyright notices) may not be distributed further, without permission of the copyright holder, or without a dontribution made to the Copyright Clearance Center under the rules noted in the individual papers. (Also note that a few documents authored by U. S. Government employees or contractors as part of their work for the Government, had copyrights claimed by the journals that published the papers. Such documents are not subject to copyright, and the copyright claims of said journals have been determined to be meritless.) *MA SCANNED DOCUMENTATION MATTHEWS VEGETATION, LAND USE, AND ALBEDO Page 1 #\document\ncillary\ma\ma_01.gif Page 2 #\document\ncillary\ma\ma_02.gif Page 3 #\document\ncillary\ma\ma_03.gif Page 4 #\document\ncillary\ma\ma_04.gif Page 5 #\document\ncillary\ma\ma_05.gif Page 6 #\document\ncillary\ma\ma_06.gif Page 7 #\document\ncillary\ma\ma_07.gif Page 8 #\document\ncillary\ma\ma_08.gif Page 9 #\document\ncillary\ma\ma_09.gif Page 10 #\document\ncillary\ma\ma_10.gif Page 11 #\document\ncillary\ma\ma_11.gif Page 12 #\document\ncillary\ma\ma_12.gif Page 13 #\document\ncillary\ma\ma_13.gif Page 14 #\document\ncillary\ma\ma_14.gif *MATTHEWS VEGETATION TYPE_help DATA ELEMENT: Vegetation Type STRUCTURE: Raster Data File:1-degree 180x360 GED grid (see User's Guide) SERIES: NONE SPATIAL META-DATA: MAVEG.DOC file title : Matthews Vegetation Types data type : byte file type : binary columns : 360 rows : 180 ref. system : lat/long ref. units : deg unit dist. : 1.0000000 min. X : -180.0000000 max. X : 180.0000000 min. Y : -90.0000000 max. Y : 90.0000000 pos'n error : unknown resolution : 1.0000000 min. value : 0 max. value : 31 value units : classed value error : unknown flag value : none flag def'n : none legend cats : 33 category 0 : Water (including lake and ocean) category 1 : TER Tropical evergreen rainforest, mangrove forest category 2 : TES Tropical/subtropical evergreen seasonal broadleaved forest category 3 : SER Subtropical evergreen rainforest category 4 : TSP Temperate/subpolar evergreen rainforest category 5 : TSB Temperate evergreen seasonal broadleaved forest, summer rain category 6 : EBS Evergreen broadleaved sclerophyllous forest, winter rain category 7 : TEN Tropical/subtropical evergreen needleleaved forest category 8 : TSE Temperate/subpolar evergreen needleleaved forest category 9 : TSD Tropical/subtropical drought-deciduous forest category 10 : CDE Cold-deciduous forest, with evergreens category 11 : CDF Cold-deciduous forest, without evergreens category 12 : XFW Xeromorphic forest/woodland category 13 : ESW Evergreen broadleaved sclerophyllous woodland category 14 : ENW Evergreen needleleaved woodland category 15 : TDD Tropical/subtropical drought-deciduous woodland category 16 : CDW Cold-deciduous woodland category 17 : EBT Evergreen broadleaved shrubland/thicket, evergreen dwarf-shrubland category 18 : ENM Evergreen needleleaved or microphyllous shrubland/thicket category 19 : DDS Drought-deciduous shrubland/thicket category 20 : CDS Cold-deciduous subalpine/subpolar shrubland, cold-deciduous dwarf shrubland category 21 : XSD Xeromorphic shrubland/dwarf shrubland category 22 : ATM Arctic/alpine tundra, mossy bog category 23 : TGW Tall/medium/short grassland with 10- 40% woody tree cover category 24 : TGV Tall/medium/short grassland with <10% woody tree cover or tuft-plant cover category 25 : TGS Tall/medium/short grassland with shrub cover category 26 : TGN Tall grassland, no woody cover category 27 : MGN Medium grassland, no woody cover category 28 : MSG Meadow, short grassland, no woody cover category 29 : FFO Forb formations category 30 : DES Desert category 31 : ICE Ice category 32 : CUL Cultivation ATTRIBUTE META-DATA: NONE NOTES: *MATTHEWS VEGETATION TYPE MATTHEWS VEGETATION, LAND USE, AND ALBEDO Vegetation Type #\data\ncillary\maveg.img *MATTHEWS CULTIVATION INTENSITY_help DATA ELEMENT: Cultivation Intensity STRUCTURE: Raster Data File:1-degree 180x360 GED grid(see User's Guide) SERIES: NONE SPATIAL META-DATA: MACULT.DOC file title : Matthews Cultivation Intensity data type : byte file type : binary columns : 360 rows : 180 ref. system : lat/long ref. units : deg unit dist. : 1.0000000 min. X : -180.0000000 max. X : 180.0000000 min. Y : -90.0000000 max. Y : 90.0000000 pos'n error : unknown resolution : 1.0000000 min. value : 0 max. value : 5 value units : classed value error : unknown flag value : none flag def'n : none legend cats : 6 category 0 : 0 Water (including lake and ocean) category 1 : 1 0% category 2 : 2 20% category 3 : 3 50% category 4 : 4 75% category 5 : 5 100% ATTRIBUTE META-DATA: NONE NOTES: *MATTHEWS SEASONAL ALBEDO_help DATA ELEMENT: Seasonal Albedo STRUCTURE: Raster Data File:1-degree 180x360 GED grid(see User's Guide) SERIES: four characteristic seasons SPATIAL META-DATA: MALBFA.DOC file title : Matthews Fall Albedo (% X 100) data type : integer file type : binary columns : 360 rows : 180 ref. system : lat/long ref. units : deg unit dist. : 1.0000000 min. X : -180.0000000 max. X : 180.0000000 min. Y : -90.0000000 max. Y : 90.0000000 pos'n error : unknown resolution : 1.0000000 min. value : 0 max. value : 7500 value units : percentage X 100 value error : unknown flag value : none flag def'n : none legend cats : 0 File Series Parameters: File Season Minimum Maximum MALBFA Fall 0 7500 MALBSM Summer 0 7500 MALBSP Spring 0 7500 MALBWN Winter 0 7500 ATTRIBUTE META-DATA: NONE NOTES: *MATTHEWS SEASONAL ALBEDO MATTHEWS VEGETATION, LAND USE, AND ALBEDO Fall Seasonal Albedo #\data\ncillary\malbfa.img Summer Seasonal Albedo #\data\ncillary\malbsm.img Spring Seasonal Albedo #\data\ncillary\malbsp.img Winter Seasonal Albedo #\data\ncillary\malbwn.img