Potential Evapotranspiration is a point theme representing the sum of potential evaporation and plant transpiration to the atmosphere from throughout the world. Measurements are represented by points at every.5 degrees and provided for every month of the year. This dataset is a part of the Global Climate Database from the Global Change Department National Institute of Public Health and Environmental Protection.
Purpose
For educational, non-commercial purposes only.
Supplemental Information
The evapotranspiration scheme used is developed by Prentice et al. It reference is: Prentice, I.C., Sykes, M. Cramer, W., 1993. A simulation model for the transient effects of climate change on forest landscapes. Ecological Modeling, 65: 51-70.
Temporal Extent
Currentness Reference
publication date
Time Instant
1996
Bounding Box
West
-179.500000
East
180.000000
North
83.000000
South
-56.000000
Theme Keyword
climatologyMeteorologyAtmosphere
Theme Keyword Thesaurus
ISO 19115 Topic Categories.
Theme Keyword
Evapotrans
Theme Keyword Thesaurus
None
Place Keyword
World
Place Keyword Thesaurus
Library of Congress Subject Headings
Temporal Keyword
1996
Temporal Keyword Thesaurus
None
Access Restrictions
For current Columbia affiliates only.
Use Restrictions
For educational, non-commercial use only.
Status
Complete
Maintenance and Update Frequency
Unknown
Point of Contact
Contact Organization
LAND INFO Worldwide Mapping, LLC
Delivery Point
PO Box 261961
City
Highlands Ranch
State
CO
Postal Code
80163-1951
Country
USA
Contact Telephone
303-790-9730
Contact Electronic Mail Address
sales@landinfo.com
Native Data Set Environment
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.2.6.1500
Data Quality Information
Attribute Accuracy Report
The quality has been improved by using stringent station selection criteria for the climatic normal period 1931-1960. The database is now based on c. high-quality 16000-20000 stations world wide. The interpolation methodology has been improved by using a empirical correction scheme with locally derived lapse rates. This scheme works well for both temperature and precipitation.
Spatial Data Organization Information
Direct Spatial Reference Method
Vector
Point and Vector Object Information
SDTS Terms Description
SDTS Point and Vector Object Type
Entity point
Point and Vector Object Count
62483
Spatial Reference Information
Horizontal Coordinate System Definition
Geographic
Latitude Resolution
0.000000
Longitude Resolution
0.000000
Geographic Coordinate Units
Decimal degrees
Geodetic Model
Horizontal Datum Name
North American Datum of 1927
Ellipsoid Name
Clarke 1866
Semi-major Axis
6378206.400000
Denominator of Flattening Ratio
294.978698
Entity and Attribute Information
Entity Type
Entity Type Label
pet
Attributes
FID
Internal feature number. (Sequential unique whole numbers that are automatically generated.)
Definition Source
ESRI
Shape
Feature geometry. (Coordinates defining the features.)
Definition Source
ESRI
LON
Longitude
LAT
Latitude
ELEV
Elevation
JAN
Potential evapotrans in January (mm)
FEB
Potential evapotrans in Febuary (mm)
MAR
Potential evapotrans in March (mm)
APR
Potential evapotrans in April (mm)
MAY
Potential evapotrans in May (mm)
JUN
Potential evapotrans in June (mm)
JUL
Potential evapotrans in July (mm)
AUG
Potential evapotrans in August (mm)
SEP
Potential evapotrans in September (mm)
OCT
Potential evapotrans in October (mm)
NOV
Potential evapotrans in November (mm)
DEC
Potential evapotrans in December (mm)
LONG
Longitude
LATI
Latitude
DEC_FEB
Potential evapotrans total from December - Febuary (mm
MAR_MAY
Potential evapotrans total from March - May (mm)
JUN_AUG
Potential evapotrans total from June - August (mm)
SEP_NOV
Potential evapotrans total from September - November (mm)
ANNUAL
Actual evapotrans annually (mm)
Distribution Information
Distributor
LAND INFO Worldwide Mapping, LLC
Name
Metadata Reference Information
Metadata Date
20081001
Metadata Contact
Contact Information
Contact Organization Primary
Contact Organization
Research Data Services (RDS), Columbia University Libraries
Contact Person
GIS/Metadata Librarian
Contact Address
Address
420 W. 118th St., 215 IAB, MC 3301
City
New York
State or Province
NY
Postal Code
10027
Contact Voice Telephone
(212)854-6012
Contact Electronic Mail Address
data@library.columbia.edu
Metadata Standard Name
FGDC Content Standards for Digital Geospatial Metadata
