Influence of subgrid-scale heterogeneity in leaf area index, stomatal resistance, and soil moisture on grid-scale land-atmosphere interactions

G. B. Bonan, David Pollard, S. L. Thompson

Research output: Contribution to journalArticle

96 Citations (Scopus)

Abstract

Comparisons between energy fluxes obtained using parameter values for the average of 100 subgrid points and the average fluxes for the 100 subgrid points showed minor differences for emitted infrared radiation and reflected solar radiation, but large differences for sensible heat and evapotranspiration. Leaf area index was the most important parameter; stomatal resistances were only important on wet soils. Interactions among parameters increased the nonlinearity of land-atmosphere energy exchange. When considered separately, six to ten values of each parameter greatly reduced the deviation between the two flux estimates. However, this approach became cumbersome when all four parameters varied independently. -from Authors

Original languageEnglish (US)
Pages (from-to)1882-1897
Number of pages16
JournalJournal of Climate
Volume6
Issue number10
DOIs
StatePublished - Jan 1 1993

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leaf area index
soil moisture
atmosphere
infrared radiation
energy flux
nonlinearity
evapotranspiration
solar radiation
land
parameter
energy
soil

All Science Journal Classification (ASJC) codes

  • Atmospheric Science

Cite this

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abstract = "Comparisons between energy fluxes obtained using parameter values for the average of 100 subgrid points and the average fluxes for the 100 subgrid points showed minor differences for emitted infrared radiation and reflected solar radiation, but large differences for sensible heat and evapotranspiration. Leaf area index was the most important parameter; stomatal resistances were only important on wet soils. Interactions among parameters increased the nonlinearity of land-atmosphere energy exchange. When considered separately, six to ten values of each parameter greatly reduced the deviation between the two flux estimates. However, this approach became cumbersome when all four parameters varied independently. -from Authors",
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Influence of subgrid-scale heterogeneity in leaf area index, stomatal resistance, and soil moisture on grid-scale land-atmosphere interactions. / Bonan, G. B.; Pollard, David; Thompson, S. L.

In: Journal of Climate, Vol. 6, No. 10, 01.01.1993, p. 1882-1897.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Influence of subgrid-scale heterogeneity in leaf area index, stomatal resistance, and soil moisture on grid-scale land-atmosphere interactions

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AB - Comparisons between energy fluxes obtained using parameter values for the average of 100 subgrid points and the average fluxes for the 100 subgrid points showed minor differences for emitted infrared radiation and reflected solar radiation, but large differences for sensible heat and evapotranspiration. Leaf area index was the most important parameter; stomatal resistances were only important on wet soils. Interactions among parameters increased the nonlinearity of land-atmosphere energy exchange. When considered separately, six to ten values of each parameter greatly reduced the deviation between the two flux estimates. However, this approach became cumbersome when all four parameters varied independently. -from Authors

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