Comparative responses of EPIC and CERES crop models to high and low spatial resolution climate change scenarios

L. O. Mearns, T. Mavromatis, E. Tsvetsinskaya, C. Hays, William E. Easterling

Research output: Contribution to journalReview article

102 Citations (Scopus)

Abstract

We compared the responses of the CERES and EPIC crop models, for wheat and corn, to two different climate change scenarios of different spatial scales applied to the central Great Plains. The scenarios were formed from a high-resolution regional climate model (RegCM) and a coarse resolution general circulation model, which provided the initial and boundary conditions for the regional model. Important differences in yield were predicted by the two models for the two different scenarios. For corn, CERES simulated moderate yield decreases for both scenarios, while EPIC simulated a decrease for the coarse scenario but no change for the fine scale scenario. Differences in the simulation of wheat yields were also found. These differences were traced to the contrasting ways in which the models form final yield, even though their strategies for simulating potential total biomass are similar. We identify the crop model type as an important uncertainty in impacts assessment in addition to the spatial resolution of climate change scenarios.

Original languageEnglish (US)
Article number1998JD200061
Pages (from-to)6623-6646
Number of pages24
JournalJournal of Geophysical Research Atmospheres
Volume104
Issue numberD6
DOIs
StatePublished - Mar 27 1999

Fingerprint

CERES (experiment)
crops
crop models
climate change
Climate change
Crops
spatial resolution
crop
corn
wheat
General Circulation Models
maize
climate models
Climate models
uncertainty
regional climate
general circulation model
biomass
climate modeling
plains

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Forestry
  • Oceanography
  • Aquatic Science
  • Ecology
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Palaeontology

Cite this

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abstract = "We compared the responses of the CERES and EPIC crop models, for wheat and corn, to two different climate change scenarios of different spatial scales applied to the central Great Plains. The scenarios were formed from a high-resolution regional climate model (RegCM) and a coarse resolution general circulation model, which provided the initial and boundary conditions for the regional model. Important differences in yield were predicted by the two models for the two different scenarios. For corn, CERES simulated moderate yield decreases for both scenarios, while EPIC simulated a decrease for the coarse scenario but no change for the fine scale scenario. Differences in the simulation of wheat yields were also found. These differences were traced to the contrasting ways in which the models form final yield, even though their strategies for simulating potential total biomass are similar. We identify the crop model type as an important uncertainty in impacts assessment in addition to the spatial resolution of climate change scenarios.",
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Comparative responses of EPIC and CERES crop models to high and low spatial resolution climate change scenarios. / Mearns, L. O.; Mavromatis, T.; Tsvetsinskaya, E.; Hays, C.; Easterling, William E.

In: Journal of Geophysical Research Atmospheres, Vol. 104, No. D6, 1998JD200061, 27.03.1999, p. 6623-6646.

Research output: Contribution to journalReview article

TY - JOUR

T1 - Comparative responses of EPIC and CERES crop models to high and low spatial resolution climate change scenarios

AU - Mearns, L. O.

AU - Mavromatis, T.

AU - Tsvetsinskaya, E.

AU - Hays, C.

AU - Easterling, William E.

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Y1 - 1999/3/27

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AB - We compared the responses of the CERES and EPIC crop models, for wheat and corn, to two different climate change scenarios of different spatial scales applied to the central Great Plains. The scenarios were formed from a high-resolution regional climate model (RegCM) and a coarse resolution general circulation model, which provided the initial and boundary conditions for the regional model. Important differences in yield were predicted by the two models for the two different scenarios. For corn, CERES simulated moderate yield decreases for both scenarios, while EPIC simulated a decrease for the coarse scenario but no change for the fine scale scenario. Differences in the simulation of wheat yields were also found. These differences were traced to the contrasting ways in which the models form final yield, even though their strategies for simulating potential total biomass are similar. We identify the crop model type as an important uncertainty in impacts assessment in addition to the spatial resolution of climate change scenarios.

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