National Oceanic and Atmospheric Administration (NOAA), National Environmental Satellite, Data, and Information Service(NESDIS)
This directory contains the documentation on Webb, Rosenzweig and Levine's Global Soil Particle Size Properties published in the Global Ecosystems Database:
*WEBB ET AL SOIL PARTICLE SIZE PROPERTIES_help
Global Ecosystems Database Disc A: Chapter 12
Webb, Rosenzweig, and Levine Global Soil Particle Size Properties
Continent Codes
Zobler Soil Type
Potential Storage of Water in Soil Profile
Potential Storage of Water in Root Zone
Soil Water Model II
Soil Profile Thickness
Texture-based Potential Storage of Water
Depth of Horizon
Proportion of Clay in Horizon
Proportion of Sand in Horizon
Proportion of Silt in Horizon
DATA-SET DESCRIPTION
Data-Set Name: Webb, Rosenzweig, and Levine Global Soil Particle
Size Properties
Principal Investigator: Robert S. Webb
Cynthia E. Rosenzweig
Elissa R. Levine
Scientific Reference: (* reprint on CD-ROM)
+ Webb, Robert S., Cynthia E. Rosenzweig, and Elissa R.
Levine, 1991. A Global Data Set of Soil Particle Size
Properties. NASA Technical Memorandum 4286.
SOURCE
Source Data Citation:
Webb, R.S., C.E. Rosenzweig, and E.R. Levine. 1991. A Global
Data Set of Soil Particle Size Properties. Digital
Raster Data on a 1-degree Geographic (lat/long) 180x360
grid. New York: Columbia University Goddard Institute
of Space Studies. 0.51 MB.
Contributor:
Dr. Robert S. Webb
NOAA Paleoclimatology Program
National Geophysical Data Center
325 Broadway
Boulder, CO 80303 USA
Distributor:
Columbia University, Goddard Institute for Space Studies
Vintage:
circa 1980's
Lineage:
(1) Principal Investigators: R.S. Webb, C.E. Rosenzweig,
and E.R. Levine
Goddard Institute for Space Studies
(2) R.S. Webb
NOAA National Geophysical Data Center
ORIGINAL DESIGN
Variables:
(1) Continental Classes
(2) Zobler Soil Classes
(3) Potential Storage of Water in Root Zone
(4) Potential Storage of Water in Soil Profile
(5) Soil Water Model II
(6) Soil Profile Thickness
(7) Texture-based Potential Storage of Water
(8) Depth of 15 horizons (meters)
(9) Proportion of sand in 15 horizons
(10) Proportion of silt in 15 horizons
(11) Proportion of clay in 15 horizons
Origin:
FAO/UNESCO Soil Map of the World (1974) -- see Chapter A16X
Geographic Reference:
lat/long
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:
Characteristic Classes and Values for 1-degree grid cells
Time Period:
Modern, circa 1971-1981
Temporal Sampling:
Modern composite
INTEGRATED DATA-SET
Data-Set Citation:
Webb, Robert S., Cynthia E. Rosenzweig, and Elissa R.
Levine. 1992. A Global Data Set of Soil Particle Size
Properties. 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. 2 independent
and one derived spatial layer with 65 attributes, on CD-
ROM, 16.5 MB. [first published in 1991]
Analyst:
Robert S. Webb
Mark A. Ohrenschall
Projection:
Geographic (lat/long), GED window (see User's Guide).
Spatial Representation:
Characteristic classes and values within 1-degree grid cells.
Temporal Representation:
Modern composite
Data Representation:
(1) Continental Classes
1-byte integer class codes
(2) Zobler Soil Classes
1-byte integer class codes
(3) Potential Storage of
Water in Root Zone 2-byte integers (mm)
(4) Potential Storage of
Water in Soil Profile 2-byte integers (mm)
(5) Soil Water Model II
2-byte integers (mm)
(6) Soil Profile Thickness
2-byte integers (cm)
(7) Texture-based Potential
Storage of Water 2-byte integers (mm)
(8) Depth of 15 horizons
(meters) 4-byte real (meters +/-
.001)
(9) Proportion of sand in 15
horizons 4-byte real (+/- .001)
(10) Proportion of silt in 15
horizons 4-byte real (+/- .001)
(11) Proportion of clay in 15
horizons 4-byte real (+/- .001)
Layers and Attributes:
2 independent and 1 derived spatial layers with 65 attribute
layers (stored as raster data files).
Compressed Data Volume:
602,458 bytes
ADDITIONAL REFERENCES
Abramopoulos, F., Rosenzweig, C., and Choudhury, B., 1988.
Improved Ground Hydrology Calculations for Global
Climate Models (GCMS): Soil Water Movement and
Evaporation. Journal of Climate, 1, 921-941.
Bouwman, A.F., Fung, I.Y., Matthews, E.E., and John, J.G.,
1991. Global model of Nitrous Oxides production from
natural soils. Global Biogeochemical Cycles, submitted.
Buol, S.W., Hole, F.D., McCracken, R.J., 1973. Soil Genesis
and Classification. The Iowa State University Press,
Ames, Iowa.
Delworth, T.L., and Manage, S., 1988. The influence of
potential evaporation of the variabilities of simulated
soil wetness and climate. Journal of Climate, 1, 523-547.
FAO-UNESCO, 1971-1981. Soil Map of the World, 1:5,000,000,
Volumnes II-X. UNESCO, Paris.
Hansen, J., Russell, G., Rind, D., Stone, P., Lacis, A.,
Lebedeff, S., Reudy, R., and Travis, L., 1983.
Efficient three-dimensional global models for climate
studies. Monthly Weather Review, 111, 609-662.
Henderson-Sellers, A., Wilson, M.F., Thomas, R., and
Dickinson, R.E., 1986. Current Global Land-Surface Data
Sets for Use in Climate-Related Studies. NCAR
Technical Note NCAR/TN-272+STR.
Kellog, W.W., and Zhao, Z.C., 1988.Sensitivity of soil moisture
to doubling of carbon dioxide in climate modeling experiments,
I, North America. Journal of Climate, 1, 348-366.
Matthews, E., 1984. Prescription of Land-Surface Boundary
Conditions in GISS GCM II: A simple method based on
high-resolution vegetation data bases. NASA Technical
Memorandum #86096.
Matthews, E., 1983. Global Vegetation and land use: New
high-resolution data bases for climate studies.
Journal of Climate and Applied Meteorology, 22, 474-487.
Petersen, G.W., Cunningham, R.L. Matelski, R.P., 1968.
Available moisture within selected Pennsylvania soil
series. Pennsylvania State University Agronomy Series
#3, 21pp.
Rind, D., 1988. The Doubled CO2 Climate and the Sensitivity
of the Modeled Hydrologic Cycle. Journal of
Geophysical Research, 93 (D5), 5386-5412.
Rind, D., Goldberg, R., Hansen, J., Rosenzweig, C., and
Ruedy, R., 1990. Potential evapotranspiration and the
likelihood of future drought. Journal of Geophysical
Research, 95 (D7), 9983-10004.
Soil Science Society of America, 1987. Glossary of Soil
Science Terms. Soil Science Society of America.
Madison, WI.
Webb, R.S., 1990. Late Quaternary Water-Level Fluctuations
in the Northeastern Unites States. Brown University
Ph.D. thesis, Providence, RI.
Zobler, L., 1986. A World Soil File for Global Climate
Modeling. NASA Technical Memorandum #87802.
TECHNICAL REPORT
Mark Ohrenschall, NOAA/NESDIS
National Geophysical Data Center
Boulder, CO
The following is an excerpt from documentation provided by Robert
S. Webb. This selection refers to a data file containing depth
and soil particle size information. Note that references to 106
entries in the data array (corresponding to Zobler soil types) is
a typographical error, and the correct figure is 107.
The data has been organized as four 106x10x15 [sic]
dimensioned real*4 arrays: depth, sand, silt, and clay. The
first dimension (106) [sic] corresponds to the sequence
number of the soil types in Zobler's (1986) World Soil Data
File. The second dimension (10) corresponds to the volume
numbers of the nine major continental divisions in
FAO/UNESCO Soil Map of the World, Vols. 2-10 (1971-81). The
third dimension (15) corresponds to the individual horizons
with data for each soil type from the Morphological,
Chemical and Physical Properties Appendix in each of the
nine volumes of the FAO/UNESCO Soil Map of the World
(1971-81). The data in the sand, silt, and clay arrays are
stored as proportional values for each soil horizon. The
arbitrary particle size distribution summing to 100 percent
included for Histosols (entries 61-63 in first dimension of
each array) should not be used. Instead, values reflecting
the physical properties of organic soils and appropriate for
specific research objectives should be inserted.
The data in the depth array are scaled in meters with the
first value being 0m depth for each soil type and the
subsequent values the contact depths of contiguous horizons.
By definition the depth array contains one extra value for
the third dimension corresponding to the bottom depth of the
lowest horizon for each soil type. Within the data set, no
soil type had more than 14 soil horizons. In cases when the
number of horizons in a soil type was less than 14, we used
-1.0 values to flag the end of record of each soil type.
For example, a soil type with 10 horizons has 10 data
entries in the sand, silt, and clay arrays, 11 data entries
for the depth array, and -1.0 values for entries 11 - 15 in
each array (entries 12 - 15 for the depth array).
Some technical notes are given regarding the 107x10x15 data array
for those interested:
1) A code for ocean was added to the group of nine continent
codes, thus accounting for the 10 elements of the second
dimension of the data array. The data array for all soil
horizons for all soil types for this continent code was zero-filled.
2) The data array was an ASCII text file with four columns of
numbers, each column corresponding to one of the four variables,
namely depth, sand, silt, or clay. Thus each array element was
actually a line of text containing four data values for the four
variables.
3) The ordering of the array elements into the (one-dimensional)
data file was such that the 107 soil types vary slowest, the 10
continent codes vary faster, and the 15 soil horizons vary
fastest. In other words, if an element's position in the array
is given by the indices (i,j,k) where 1 <= i <= 107, 1 <= j <=10,
and 1 <= k <= 15 then the position of that element in the data
file is given by ((i - 1) *15 * 10) + ((j - 1) * 15) + k = ((i -
1) * 10 + j - 1) * 15 + k.
The first stage in producing the IDRISI format for the data array
was to separate the data by variable (depth, sand, silt, and
clay) and by horizon number (one through 15) into 60 attribute
values files. Each attribute values file would be composed of
feature identification codes corresponding to each of the 107
soil types for each of the 10 continent codes (explained below),
with each feature I.D. being paired with a data value. The data
value for each feature I.D. was read from the appropriate
position in the data array (given above). In other words, the
first and second dimensions of the data array were merged into a
single dimension with 107 * 10 = 1070 elements, and the third and
fourth dimensions (the fourth dimension is the variable) were
also merged into a single dimension with 15 * 4 = 60 elements.
Here the elements of the first merged dimension are "continental
soil type" (the feature I.D.'s) and data value pairs , and the
elements of the second merged dimension are attribute values
files, named after variable and soil horizon.
The second stage in producing the IDRISI format was to create the
spatial map associated with the attribute values files. This
spatial map would be the feature definition file that uses the
continental soil types as links between the data values and
geographic locations. Since the soil types and the continental
divisions are already spatially defined it only remained to
produce the map of continental soil types. This was done by
overlaying the map of continent codes (WRCONT) multiplied by 1000
with the map of soil types (WRZSOL) via addition1. Both the
original continent codes and the original soil types can be
recovered from this map, the continent code by performing integer
division by 1000, and the soil type by taking the continental
soil type modulo 1000.
The final stage in producing the IDRISI format was to produce 60
separate raster grids from the 60 attribute values files and the
single feature definition file. This was done by running the
IDRISI module ASSIGN on the feature definition file and on each
of the 60 attribute values files. The ASSIGN module creates an
output grid from an input grid and an attribute values file,
using the input grid (whose cells take on feature I.D.'s as
values) to define the locations of the data values found in the
attribute values file. The appropriate data values are taken
from the attribute values file according to the feature I.D.'s
paired with each data value. Thus if a cell in the input grid
has a value p and the attribute values file has a feature I.D.
and data value pair (p,z) then the cell with the corresponding
position in the output grid will take on the value z. Note that
feature I.D.'s in attribute values files must be unique, but
feature I.D.'s in the feature definition file may occur many times.
_______________________________
1This was done by running the IDRISI module SCALAR on
WRCONT, choosing the multiply option and specifying 1000,
creating a temporary file, for example WRCONTE4. Then the IDRISI
module OVERLAY was run on this file and on WRZSOIL, choosing the
addition option and thus creating the feature definition file,
for example WRCZSOL. An algebraic notation for this series of
operations would be:
WRCZSOL = WRCONTE4 + WRZSOIL, where WRCONTE4 = 1000 *
WRCONT, or
WRCZSOL = (1000 * WRCONT) + WRZSOIL.
*WEBB ET AL SOIL PARTICLE SIZE PROPERTIES
ANCILLARY ENVIRONMENTAL DATA
Webb Continent Codes #\data\ncillary\wrcont.img
Webb Zobler Soil Type #\data\ncillary\wrzsoil.img
Webb Potential Storage of Water in Soil Profile #\data\ncillary\wrprof.img
Webb Potential Storage of Water in Root Zone #\data\ncillary\wrroot.img
Webb Soil Water Model II #\data\ncillary\wrmodii.img
Webb Soil Profile Thickness #\data\ncillary\wrsoil.img
Webb Texture-based Potential Storage of Water #\data\ncillary\wrtext.img
Depth of Horizon #*DEPTH OF HORIZON
Proportion of Clay in Horizon #*PROPORTION OF CLAY IN HORIZON
Proportion of Sand in Horizon #*PROPORTION OF SAND IN HORIZON
Proportion of Silt in Horizon #*PROPORTION OF SILT IN HORIZON
Scanned Documentation #*WR SCANNED DOCUMENTATION
*WR 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 Paintbrush format 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.)
*WR SCANNED DOCUMENTATION
WEBB ET AL SOIL PARTICLE SIZE PROPERTIES
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*WEBB CONTINENT CODES_help
DATA ELEMENT: Continent Codes
STRUCTURE:
Raster Data Files:1-degree GED 180x360 grid (see User's Guide)
SERIES: NONE
SPATIAL META-DATA: WRCONT.DOC
file title : Webb et al Continent Codes from the FAO/UNESCO Soil Map
of the World
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 : 10
value units : classes
value error : unknown
flag value : none
flag def'n : none
legend cats : 11
category 0 : 0 OCEAN
category 1 : 1 not used
category 2 : 2 N (NAM) NAMERICA
category 3 : 3 C (MCA) MEXICEAM
category 4 : 4 S (SAM) SAMERICA
category 5 : 5 E (EUR) EUROPE
category 6 : 6 A (AFR) AFRICA
category 7 : 7 I (SCA) SCASIA
category 8 : 8 U (NCA) NCASIA
category 9 : 9 E (SEA) SEASIA
category 10 : 10 T (AUS) AUSTRALI
comment : Continent codes correspond to volume numbers of the
FAO/UNESCO
comment : Soil Map of the World (1971-81).
ATTRIBUTE META-DATA: NONE
NOTES:
(1) Continent codes correspond to volume numbers of the
FAO/UNESCO
(2) Soil Map of the World (1971-81)
*WEBB ZOBLER SOIL TYPE_help
DATA ELEMENT: Zobler Soil Type
STRUCTURE:
Raster Data Files:1-degree GED 180x360 grid (see User's Guide)
SERIES: NONE
SPATIAL META-DATA: WRZSOIL.DOC
file title : Webb et al Soil Particle Size Properties Zobler
Soil 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 : 107
value units : classes
value error : unknown
flag value : none
flag def'n : none
legend cats : 108
category 0 : 0 WATER WATER/OCEAN/LAKE
category 1 : 1 AF FERRIC ACRISOL
category 2 : 2 AG GLEYIC ACRISOL
category 3 : 3 AH HUMIC ACRISOL
category 4 : 4 AO ORTHIC ACRISOL
category 5 : 5 AP PLINTHIC ACRISOL
category 6 : 6 BC CHROMIC CAMBISOL
category 7 : 7 BD DYSTRIC CAMBISOL
category 8 : 8 BE EUTRIC CAMBISOL
category 9 : 9 BF FERRALIC CAMBISOL
category 10 : 10 BG GLEYIC CAMBISOL
category 11 : 11 BH HUMIC CAMBISOL
category 12 : 12 BK CALCIC CAMBISOL
category 13 : 13 BV VERTIC CAMBISOL
category 14 : 14 BX GELIC CAMBISOL
category 15 : 15 CG GLOSSIC CHERNOZEM
category 16 : 16 CH HAPLIC CHERNOZEM
category 17 : 17 CK CALCIC CHERNOZEM
category 18 : 18 CL LUVIC CHERNOZEM
category 19 : 19 DD DYSTRIC PODZOLUVISOL
category 20 : 20 DE EUTRIC PODZOLUVISOL
category 21 : 21 DG GLEYIC PODZOLUVISOL
category 22 : 22 E RENDZINA
category 23 : 23 FA ACRIC FERRALSOL
category 24 : 24 FH HUMIC FERRALSOL
category 25 : 25 FO ORTHIC FERRALSOL
category 26 : 26 FP PLINTHIC FERRALSOL
category 27 : 27 FR RHODIC FERRALSOL
category 28 : 28 FX XANTHIC FERRALSOL
category 29 : 29 GC CALCARIC GLEYSOL
category 30 : 30 GD DYSTRIC GLEYSOL
category 31 : 31 GE EUTRIC GLEYSOL
category 32 : 32 GH HUMIC GLEYSOL
category 33 : 33 GM MOLLIC GLEYSOL
category 34 : 34 GP PLINTHIC GLEYSOL
category 35 : 35 GX GELIC GLEYSOL
category 36 : 36 HC CALCARIC PHAEOZEM
category 37 : 37 HG GLEYIC PHAEOZEM
category 38 : 38 HH HAPLIC PHAEOZEM
category 39 : 39 HL LUVIC PHAEOZEM
category 40 : 40 I LITHOSOL
category 41 : 41 JC CALCARIC FLUVISOL
category 42 : 42 JD DYSTRIC FLUVISOL
category 43 : 43 JE EUTRIC FLUVISOL
category 44 : 44 JT THIONIC FLUVISOL
category 45 : 45 KH HAPLIC KASTANOZEM
category 46 : 46 KK CALCIC KASTANOZEM
category 47 : 47 KL LUVIC KASTANOZEM
category 48 : 48 LA ALBIC LUVISOL
category 49 : 49 LC CHROMIC LUVISOL
category 50 : 50 LF FERRIC LUVISOL
category 51 : 51 LG GLEYIC LUVISOL
category 52 : 52 LK CALCIC LUVISOL
category 53 : 53 LO ORTHIC LUVISOL
category 54 : 54 LP PLINTHIC LUVISOL
category 55 : 55 LV VERTIC LUVISOL
category 56 : 56 MG GLEYIC GREYZEM
category 57 : 57 MO ORTHIC GREYZEM
category 58 : 58 ND DYSTRIC NITOSOL
category 59 : 59 NE EUTRIC NITOSOL
category 60 : 60 NH HUMIC NITOSOL
category 61 : 61 OD DYSTRIC HISTOSOL
category 62 : 62 OE EUTRIC HISTOSOL
category 63 : 63 OX GELIC HISTOSOL
category 64 : 64 PF FERRIC PODZOL
category 65 : 65 PG GLEYIC PODZOL
category 66 : 66 PH HUMIC PODZOL
category 67 : 67 PL LEPTIC PODZOL
category 68 : 68 PO ORTHIC PODZOL
category 69 : 69 PP PLACIC PODZOL
category 70 : 70 QA ALBIC ARENOSOL
category 71 : 71 QC CAMBIC ARENOSOL
category 72 : 72 QF FERRALIC ARENOSOL
category 73 : 73 QL LUVIC ARENOSOL
category 74 : 74 RC CALCARIC REGOSOL
category 75 : 75 RD DYSTRIC REGOSOL
category 76 : 76 RE EUTRIC REGOSOL
category 77 : 77 RX GELIC REGOSOL
category 78 : 78 SG GLEYIC SOLONETZ
category 79 : 79 SM MOLLIC SOLONETZ
category 80 : 80 SO ORTHIC SOLONETZ
category 81 : 81 TH HUMIC ANDOSOL
category 82 : 82 TM MOLLIC ANDOSOL
category 83 : 83 TO OCHRIC ANDOSOL
category 84 : 84 TV VITRIC ANDOSOL
category 85 : 85 U RANKER
category 86 : 86 VC CHROMIC VERTISOL
category 87 : 87 VP PELLIC VERTISOL
category 88 : 88 WD DYSTRIC PLANOSOL
category 89 : 89 WE EUTRIC PLANOSOL
category 90 : 90 WH HUMIC PLANOSOL
category 91 : 91 WM MOLLIC PLANOSOL
category 92 : 92 WS SOLODIC PLANOSOL
category 93 : 93 WX GELIC PLANOSOL
category 94 : 94 XH HAPLIC XEROSOL
category 95 : 95 XK CALCIC XEROSOL
category 96 : 96 XL LUVIC XEROSOL
category 97 : 97 XY GYPSIC XEROSOL
category 98 : 98 YH HAPLIC YERMOSOL
category 99 : 99 YK CALCIC YERMOSOL
category100 : 100 YL LUVIC YERMOSOL
category101 : 101 YT TAKYRIC YERMOSOL
category102 : 102 YY GYPSIC YERMOSOL
category103 : 103 ZG GLEYIC SOLONCHAK
category104 : 104 ZM MOLLIC SOLONCHAK
category105 : 105 ZO ORTHIC SOLONCHAK
category106 : 106 ZT TAKYRIC SOLONCHAK
category107 : 107 ICE GLACIER/ICE
ATTRIBUTE META-DATA: NONE
NOTES: NONE
*WEBB POTENTIAL STORAGE OF WATER IN SOIL PROFILE_help
DATA ELEMENT: Potential Storage of Water in Soil Profile
STRUCTURE:
Raster Data Files:1-degree GED 180x360 grid (see User's Guide)
SERIES: NONE
SPATIAL META-DATA: WRPROF.DOC
file title : Webb et al Potential Storage of Water in Soil
Profile (mm)
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 : 4432
value units : millimeters
value error : unknown
flag value : 1
flag def'n : ice
legend cats : 0
ATTRIBUTE META-DATA: NONE
NOTES: NONE
*WEBB POTENTIAL STORAGE OF WATER IN ROOT ZONE_help
DATA ELEMENT: Potential Storage of Water in Root Zone
STRUCTURE:
Raster Data Files:1-degree GED 180x360 grid (see User's Guide)
SERIES: NONE
SPATIAL META-DATA: WRROOT.DOC
file title : Webb et al Potential Storage of Water in Root
Zone (mm)
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 : 1700
value units : millimeters
value error : unknown
flag value : 1
flag def'n : ice
legend cats : 0
ATTRIBUTE META-DATA: NONE
NOTES: NONE
*WEBB SOIL WATER MODEL II_help
DATA ELEMENT: Soil Water Model II
STRUCTURE:
Raster Data Files:1-degree GED 180x360 grid (see User's Guide)
SERIES: NONE
SPATIAL META-DATA: WRMODII.DOC
file title : Webb et al Model II Soil Water (mm)
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 : 650
value units : millimeters
value error : unknown
flag value : 1
flag def'n : ice
legend cats : 0
ATTRIBUTE META-DATA: NONE
NOTES: NONE
*WEBB SOIL PROFILE THICKNESS_help
DATA ELEMENT: Soil Profile Thickness
STRUCTURE:
Raster Data Files:1-degree GED 180x360 grid (see User's Guide)
SERIES: NONE
SPATIAL META-DATA: WRSOIL.DOC
file title : Webb et al Soil Profile Thickness (cm)
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 : 800
value units : centimeters
value error : unknown
flag value : 1
flag def'n : ice
legend cats : 0
ATTRIBUTE META-DATA: NONE
NOTES: NONE
*WEBB TEXTURE-BASED POTENTIAL STORAGE OF WATER_help
DATA ELEMENT: Texture-based Potential Storage of Water
STRUCTURE:
Raster Data Files:1-degree GED 180x360 grid (see User's Guide)
SERIES: NONE
SPATIAL META-DATA: WRTEXT.DOC
file title : Webb et al Texture-Based Potential Storage of
Water (mm)
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 : 2160
value units : millimeters
value error : unknown
flag value : 1
flag def'n : ice
legend cats : 0
ATTRIBUTE META-DATA: NONE
NOTES: NONE
*DEPTH OF HORIZON_help
DATA ELEMENT: Depth of Horizon
STRUCTURE:
Raster Data Files:1-degree GED 180x360 grid (see User's Guide)
SERIES: 15 soil horizons
SPATIAL META-DATA: WRDEP01.DOC
file title : Webb et al Soil Properties: depth for horizon 1
data type : real
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 : 0.0000000
max. value : 0.1400000
value units : meters
value error : unknown
flag value : -1.0000000
flag def'n : end of record for soil type
legend cats : 0
File Series Parameters:
File Horizon Minimum Maximum
WRDEP01 1 0.0000000 0.1400000
WRDEP02 2 0.0000000 3.5999999
WRDEP03 3 0.0000000 1.0500000
WRDEP04 4 0.0000000 3.5999999
WRDEP05 5 0.0000000 3.5999999
WRDEP06 6 0.0000000 5.0000000
WRDEP07 7 0.0000000 8.0000000
WRDEP08 8 0.0000000 7.0000000
WRDEP09 9 0.0000000 3.5999999
WRDEP10 10 0.0000000 3.0230000
WRDEP11 11 0.0000000 3.0480001
WRDEP12 12 0.0000000 3.5309999
WRDEP13 13 0.0000000 2.7000000
WRDEP14 14 0.0000000 2.2300000
WRDEP15 15 0.0000000 2.4600000
ATTRIBUTE META-DATA: NONE
NOTES: NONE
*DEPTH OF HORIZON
WEBB ET AL SOIL PARTICLE SIZE PROPERTIES
Horizon 1 #\data\ncillary\wrdep01.img
Horizon 2 #\data\ncillary\wrdep02.img
Horizon 3 #\data\ncillary\wrdep03.img
Horizon 4 #\data\ncillary\wrdep04.img
Horizon 5 #\data\ncillary\wrdep05.img
Horizon 6 #\data\ncillary\wrdep06.img
Horizon 7 #\data\ncillary\wrdep07.img
Horizon 8 #\data\ncillary\wrdep08.img
Horizon 9 #\data\ncillary\wrdep09.img
Horizon 10 #\data\ncillary\wrdep10.img
Horizon 11 #\data\ncillary\wrdep11.img
Horizon 12 #\data\ncillary\wrdep12.img
Horizon 13 #\data\ncillary\wrdep13.img
Horizon 14 #\data\ncillary\wrdep14.img
Horizon 15 #\data\ncillary\wrdep15.img
*PROPORTION OF CLAY IN HORIZON_help
DATA ELEMENT: Proportion of Clay in Horizon
STRUCTURE:
Raster Data Files:1-degree GED 180x360 grid (see User's Guide)
SERIES: 15 soil horizons
SPATIAL META-DATA: WRCLA01.DOC
file title : Webb et al Soil Properties: clay in horizon 1
data type : real
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 : 0.0000000
max. value : 0.7700000
value units : proportional value
value error : unknown
flag value : -1.0000000
flag def'n : missing soil type
legend cats : 0
File Series Parameters:
File Horizon Minimum Maximum
WRCLA01 1 0.0000000 0.7700000
WRCLA02 2 0.0000000 0.8400000
WRCLA03 3 0.0000000 0.9180000
WRCLA04 4 0.0000000 0.9300000
WRCLA05 5 0.0000000 0.9140000
WRCLA06 6 0.0000000 0.9180000
WRCLA07 7 0.0000000 0.7500000
WRCLA08 8 0.0000000 0.6400000
WRCLA09 9 0.0000000 0.6800000
WRCLA10 10 0.0000000 0.7500000
WRCLA11 11 0.0000000 0.7600000
WRCLA12 12 0.0000000 0.7800000
WRCLA13 13 0.0000000 0.3780000
WRCLA14 14 0.0000000 0.3620000
WRCLA15 15 0.0000000 0.0000000
ATTRIBUTE META-DATA: NONE
NOTES: NONE
*PROPORTION OF CLAY IN HORIZON
WEBB ET AL SOIL PARTICLE SIZE PROPERTIES
Horizon 1 #\data\ncillary\wrcla01.img
Horizon 2 #\data\ncillary\wrcla02.img
Horizon 3 #\data\ncillary\wrcla03.img
Horizon 4 #\data\ncillary\wrcla04.img
Horizon 5 #\data\ncillary\wrcla05.img
Horizon 6 #\data\ncillary\wrcla06.img
Horizon 7 #\data\ncillary\wrcla07.img
Horizon 8 #\data\ncillary\wrcla08.img
Horizon 9 #\data\ncillary\wrcla09.img
Horizon 10 #\data\ncillary\wrcla10.img
Horizon 11 #\data\ncillary\wrcla11.img
Horizon 12 #\data\ncillary\wrcla12.img
Horizon 13 #\data\ncillary\wrcla13.img
Horizon 14 #\data\ncillary\wrcla14.img
Horizon 15 #\data\ncillary\wrcla15.img
*PROPORTION OF SAND IN HORIZON_help
DATA ELEMENT: Proportion of Sand in Horizon
STRUCTURE:
Raster Data Files:1-degree GED 180x360 grid (see User's Guide)
SERIES: 15 soil horizons
SPATIAL META-DATA: WRSAN01.DOC
file title : Webb et al Soil Properties: sand in horizon 1
data type : real
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 : 0.0000000
max. value : 0.9800000
value units : proportional value
value error : unknown
flag value : -1.0000000
flag def'n : missing soil type
legend cats : 0
File Series Parameters:
File Horizon Minimum Maximum
WRSAN01 1 0.0000000 0.9800000
WRSAN02 2 0.0000000 0.9900000
WRSAN03 3 0.0000000 0.9840000
WRSAN04 4 0.0000000 0.9900000
WRSAN05 5 0.0000000 0.9880000
WRSAN06 6 0.0000000 0.9900000
WRSAN07 7 0.0000000 0.9920000
WRSAN08 8 0.0000000 0.9920000
WRSAN09 9 0.0000000 0.9910000
WRSAN10 10 0.0000000 0.9960000
WRSAN11 11 0.0000000 0.4600000
WRSAN12 12 0.0000000 0.5400000
WRSAN13 13 0.0000000 0.3360000
WRSAN14 14 0.0000000 0.3400000
WRSAN15 15 0.0000000 0.0000000
ATTRIBUTE META-DATA: NONE
NOTES: NONE
*PROPORTION OF SAND IN HORIZON
WEBB ET AL SOIL PARTICLE SIZE PROPERTIES
Horizon 1 #\data\ncillary\wrsan01.img
Horizon 2 #\data\ncillary\wrsan02.img
Horizon 3 #\data\ncillary\wrsan03.img
Horizon 4 #\data\ncillary\wrsan04.img
Horizon 5 #\data\ncillary\wrsan05.img
Horizon 6 #\data\ncillary\wrsan06.img
Horizon 7 #\data\ncillary\wrsan07.img
Horizon 8 #\data\ncillary\wrsan08.img
Horizon 9 #\data\ncillary\wrsan09.img
Horizon 10 #\data\ncillary\wrsan10.img
Horizon 11 #\data\ncillary\wrsan11.img
Horizon 12 #\data\ncillary\wrsan12.img
Horizon 13 #\data\ncillary\wrsan13.img
Horizon 14 #\data\ncillary\wrsan14.img
Horizon 15 #\data\ncillary\wrsan15.img
*PROPORTION OF SILT IN HORIZON_help
DATA ELEMENT: Proportion of Silt in Horizon
STRUCTURE:
Raster Data Files:1-degree GED 180x360 grid (see User's Guide)
SERIES: 15 soil horizons
SPATIAL META-DATA: WRSIL01.DOC
file title : Webb et al Soil Properties: silt in horizon 1
data type : real
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 : 0.0000000
max. value : 0.8670000
value units : proportional value
value error : unknown
flag value : -1.0000000
flag def'n : missing soil type
legend cats : 0
File Series Parameters:
File Horizon Minimum Maximum
WRSIL01 1 0.0000000 0.8670000
WRSIL02 2 0.0000000 0.8770000
WRSIL03 3 0.0000000 0.8830000
WRSIL04 4 0.0000000 0.8300000
WRSIL05 5 0.0000000 0.8580000
WRSIL06 6 0.0000000 0.7840000
WRSIL07 7 0.0000000 0.8970000
WRSIL08 8 0.0000000 0.7900000
WRSIL09 9 0.0000000 0.7980000
WRSIL10 10 0.0000000 0.8690000
WRSIL11 11 0.0000000 0.6990000
WRSIL12 12 0.0000000 0.7210000
WRSIL13 13 0.0000000 0.7240000
WRSIL14 14 0.0000000 0.7140000
WRSIL15 15 0.0000000 0.0000000
ATTRIBUTE META-DATA: NONE
NOTES: NONE
*PROPORTION OF SILT IN HORIZON
WEBB ET AL SOIL PARTICLE SIZE PROPERTIES
Horizon 1 #\data\ncillary\wrsil01.img
Horizon 2 #\data\ncillary\wrsil02.img
Horizon 3 #\data\ncillary\wrsil03.img
Horizon 4 #\data\ncillary\wrsil04.img
Horizon 5 #\data\ncillary\wrsil05.img
Horizon 6 #\data\ncillary\wrsil06.img
Horizon 7 #\data\ncillary\wrsil07.img
Horizon 8 #\data\ncillary\wrsil08.img
Horizon 9 #\data\ncillary\wrsil09.img
Horizon 10 #\data\ncillary\wrsil10.img
Horizon 11 #\data\ncillary\wrsil11.img
Horizon 12 #\data\ncillary\wrsil12.img
Horizon 13 #\data\ncillary\wrsil13.img
Horizon 14 #\data\ncillary\wrsil14.img
Horizon 15 #\data\ncillary\wrsil15.img