Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Precipitation and Temperature in the HBV Model: A Comparison of Interpolation Methods
SMHI, Professional Services.
2000 (English)Report (Other academic)
Abstract [en]

This report presents an evaluation of three different methods for estimation of areal precipitation and temperature

, with

special emphasis on their applicability for runoff modelling in the Scandinavian mountains. All three methods estimate

the areal values as a weighted mean of the observations at nearby meteorological stations. The weights are determined

by:

a)

a manual subjective selection of the most representative stations

b)

inverse square distance weighting

c)

optimal interpolation

The methods were tested for a mountainous region in the north-western part of Sweden, which is an area with few

meteorological stations and complex precipitation gradients. The elevation range is some 1500m

, but meteorological

stations are normally located at low altitudes in the valleys. For the subjective and inverse distance weighting methods,

precipitation was extrapolated to higher elevations by assuming a linear increase with elevation

. For the optimal

interpolation method the climatological spatial variation in precipitation was described by means of the standard

deviation, related to topographical features. Temperature was extrapolated using the wet adiabatic lapse rate. The

evaluation included comparison of areal estimates, verification against point observations and the water balance

equation and sensitivity analyses with respect to method parameters and network changes.

For operational runoff modelling in Sweden, areal precipitation and temperature have tradit

ionally been estimated by the

subjective weighting method. This evaluation showed that for routine applications this time-consuming method can be

replaced by optimal interpolation

. Inverse-distance weighting can not be recommended in areas with few stations and

complex gradients

.

The evaluation also showed that none of the methods correctly described the spatial variation in precipitation and

temperature in the investigated region. They are thus not directly applicable for non-routine modelling applications

where the estimation of runoff is not the sole objective. All methods also proved to be sensitive to at least some of the

necessary parameters like, e

.g., elevation dependency. This pointed to possible improvements of the estimates, as the

parameters for the evaluation were selected without special consideration to local conditions

. The optimal interpolation

method seemed to be the least sensitive to changes in the meteorological network.

Place, publisher, year, edition, pages
SMHI , 2000. , p. 47
Series
RH, Report Hydrology, ISSN 0283-1104 ; 15
National Category
Oceanography, Hydrology and Water Resources
Research subject
Hydrology
Identifiers
URN: urn:nbn:se:smhi:diva-2682Local ID: Hydrologi, Rapporter, Serie RHOAI: oai:DiVA.org:smhi-2682DiVA, id: diva2:947978
Available from: 2000-09-17 Created: 2016-07-08 Last updated: 2018-07-10Bibliographically approved

Open Access in DiVA

fulltext(4444 kB)881 downloads
File information
File name FULLTEXT01.pdfFile size 4444 kBChecksum SHA-512
19866ed0ec2f5b510e1733fc7cb8f98a1f6f1ed9339dc99a784bf2aaced0d98837077c922c5e4741f51743b310870d08b8fc463a6006bb3a2f55e784a606a2a7
Type fulltextMimetype application/pdf

Authority records

Johansson, Barbro

Search in DiVA

By author/editor
Johansson, Barbro
By organisation
Professional Services
Oceanography, Hydrology and Water Resources

Search outside of DiVA

GoogleGoogle Scholar
Total: 882 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 141 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf