Contribution of land surface initialization to subseasonal forecast skill: First results from a multi-model experiment

R. D. Koster, S. P.P. Mahanama, T. J. Yamada, Gianpaolo Balsamo, A. A. Berg, M. Boisserie, P. A. Dirmeyer, F. J. Doblas-Reyes, G. Drewitt, C. T. Gordon, Z. Guo, J. H. Jeong, D. M. Lawrence, W. S. Lee, Z. Li, L. Luo, S. Malyshev, W. J. Merryfield, S. I. Seneviratne, T. StanelleB. J.J.M. Van Den Hurk, F. Vitart, Eric F. Wood

Research output: Contribution to journalArticlepeer-review

246 Scopus citations

Abstract

The second phase of the Global Land-Atmosphereb Coupling Experiment (GLACE-2) is aimed at quantifying, with a suite of long-range forecast systems, the degree to which realistic land surface initialization contributes to the skill of subseasonal precipitation and air temperature forecasts. Results, which focus here on North America, show significant contributions to temperature prediction skill out to two months across large portions of the continent. For precipitation forecasts, contributions to skill are much weaker but are still significant out to 45 days in some locations. Skill levels increase markedly when calculations are conditioned on the magnitude of the initial soil moisture anomaly.

Original languageEnglish (US)
Article numberL02402
JournalGeophysical Research Letters
Volume37
Issue number2
DOIs
StatePublished - Jan 2010

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

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