Effect of implementing ecosystem functional type data in a mesoscale climate model
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In this paper, we introduce a new concept of land-surface state representation for southern South America, which is based on “functional” attributes of vegetation, and implement a new land-cover (Ecosystem Functional Type, hereafter EFT) dataset in the Weather and Research Forecasting (WRF) model. We found that the EFT data enabled us to deal with functional attributes of vegetation and time-variant features more easily than the default land-cover data in the WRF. In order to explore the usefulness of the EFT data in simulations of surface and atmospheric variables, numerical simulations of the WRF model, using both the US Geological Survey (USGS) and the EFT data, were conducted over the La Plata Basin in South America for the austral spring of 1998 and compared with observations. Results showed that the model simulations were sensitive to the lower boundary conditions and that the use of the EFT data improved the climate simulation of 2-m temperature and precipitation, implying the need for this type of information to be included in numerical climate models.
Key wordsEcosystem Functional Type WRF land cover climate simulation
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- Anderson, J. R., E. E. Hardy, J. T. Roach, and R. E. Witmer, 1976: A land use and land cover classification system for use with remote sensor data. U.S. Geological Survey Professional Paper 964, 28pp.Google Scholar
- Bluestein, H. B., 1993: Synoptic-Dynamic Meteorology in Midlatitudes. Vol. 2, Oxford University Press, 594pp.Google Scholar
- Hong, S.-Y., and J.-O. J. Lim, 2006: The WRF singlemoment 6-class microphysics scheme (WSM6). J. Korean Meteor. Soc., 42, 129–151.Google Scholar
- Janjić, Z. I., 1996: The surface layer in the NCEP Eta Model. Preprints, Eleventh Conf. on Numerical Weather Prediction, Norfolk, VA, Amer. Meteor. Soc., 354–355.Google Scholar
- Janjić, Z. I., 2002: Nonsingular Implementation of the Mellor-Yamada Level 2.5 Scheme in the NCEP Meso model. NCEP Office Note, No. 437, 61 pp.Google Scholar
- Lee, S.-J., 2010: Impact of land surface vegetation change over the La Plata Basin on the regional climatic environment: A study using conventional landcover/ land-use and newly developed ecosystem functional types. Ph.D. dissertation, University of Maryland, 153pp.Google Scholar
- Michalakes, J., S. Chen, J. Dudhia, L. Hart, J. Klemp, J. Middlecoff, and W. Skamarock, 2001: Development of a Next Generation Regional Weather Research and Forecast Model. Developments in Teracomputing: Proc. the Ninth ECMWF Workshop on the Use of High Performance Computing in Meteorology, W. Zwieflhofer and N. Kreitz, Eds., World Scientific, 269–276.CrossRefGoogle Scholar