Dataset Identification:
Resource Abstract:
- description: Two maps, compiled at 1:1,000,000 scale, depict mean annual runoff, precipitation, and evapotranspiration in
the part of the United States east of Cleveland, Ohio and north of the southern limit of glaciation. The maps are mutually
consistent in that runoff equals precipitation minus evapotranspiration everywhere. The runoff map is based on records of
streamflow from 503 watersheds in the United States and southernmost Canada, adjusted to represent 1951-80 and supplemented
by records of precipitation at 459 stations. Precipitation at each station was partitioned into point estimates of runoff
and evapotranspiration, which were constrained such that the evapotranspiration estimates varied smoothly across the region
and decreased with increasing latitude and altitude, and the runoff estimates were consistent with measured runoff from nearby
watersheds. A point estimate of runoff was allowed to equal mean runoff in a nearby watershed, or to be somewhat higher (or
lower) if a compensating departure from mean watershed runoff could be inferred in distant parts of the watershed on the basis
of altitude or regional trends. Then, precipitation contours were drawn to parallel runoff contours but differ from them by
the magnitude of nearby estimates of evapotranspiration. These maps may slightly underrepresent mean precipitation and evapotranspiration
in areas of high relief because most precipitation stations in such areas are in valleys. These 3 coverages were used to produce
Open-File Report 96-395. Additional information about methodology can be found in this report; abstract: Two maps, compiled
at 1:1,000,000 scale, depict mean annual runoff, precipitation, and evapotranspiration in the part of the United States east
of Cleveland, Ohio and north of the southern limit of glaciation. The maps are mutually consistent in that runoff equals precipitation
minus evapotranspiration everywhere. The runoff map is based on records of streamflow from 503 watersheds in the United States
and southernmost Canada, adjusted to represent 1951-80 and supplemented by records of precipitation at 459 stations. Precipitation
at each station was partitioned into point estimates of runoff and evapotranspiration, which were constrained such that the
evapotranspiration estimates varied smoothly across the region and decreased with increasing latitude and altitude, and the
runoff estimates were consistent with measured runoff from nearby watersheds. A point estimate of runoff was allowed to equal
mean runoff in a nearby watershed, or to be somewhat higher (or lower) if a compensating departure from mean watershed runoff
could be inferred in distant parts of the watershed on the basis of altitude or regional trends. Then, precipitation contours
were drawn to parallel runoff contours but differ from them by the magnitude of nearby estimates of evapotranspiration. These
maps may slightly underrepresent mean precipitation and evapotranspiration in areas of high relief because most precipitation
stations in such areas are in valleys. These 3 coverages were used to produce Open-File Report 96-395. Additional information
about methodology can be found in this report
Citation
- Title Mean annual runoff, precipitation, and evapotranspiration in the glaciated northeastern United States, 1951-80.
-
- creation Date
2018-06-08T10:50:52.174900
Resource language:
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Metadata data stamp:
2018-08-06T19:45:37Z
Resource Maintenance Information
- maintenance or update frequency:
- notes: This metadata record was generated by an xslt transformation from a dc metadata record; Transform by Stephen M. Richard, based
on a transform by Damian Ulbricht. Run on 2018-08-06T19:45:37Z
Metadata contact
-
pointOfContact
- organisation Name
CINERGI Metadata catalog
-
- Contact information
-
-
- Address
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- electronic Mail Address cinergi@sdsc.edu
Metadata language
eng
Metadata character set encoding:
utf8
Metadata standard for this record:
ISO 19139 Geographic Information - Metadata - Implementation Specification
standard version:
2007
Metadata record identifier:
urn:dciso:metadataabout:85b86b53-d1cb-407e-a619-ea2b03897ab8
Metadata record format is ISO19139 XML (MD_Metadata)