IJG  Vol.4 No.8 , October 2013
Modeling Near-Surface Air Temperature and Precipitation Using WRF with 5-km Resolution in the Northern Patagonia Icefield: A Pilot Simulation
ABSTRACT

The regional Weather and Research Forecast (WRF) Model was run for the 2000-2010 period over the Northern Patagonia Icefield (NPI) with an horizontal resolution of 5 km. The regional model was initialized using the NCEP/NCAR atmospheric Reanalysis database. The simulation results, centered over the NPI, were validated against the observed data from the local surface stations in order to evaluate the improvement of the model results due to its increased horizontal resolution with respect to the lower resolution from Global Climate Model simulations. Interest in the NPI is due to 1) the large body of frozen water exposed to the impact of the warming planet, 2) the scarce availability of observed meteorological and glaciological information in this large and remote icefield, and 3) the need to validate the model behavior in simulating the current climate and its variability in complex terrain. The results will shed light on the degree of confidence in simulating future climate scenarios in the region and also in similar geographical settings. Based on this study subsequent model runs will allow to model future climate changes in Patagonia, which is basic information for estimating glacier variations to be expected during this century.


Cite this paper
C. Villarroel, J. Carrasco, G. Casassa and M. Falvey, "Modeling Near-Surface Air Temperature and Precipitation Using WRF with 5-km Resolution in the Northern Patagonia Icefield: A Pilot Simulation," International Journal of Geosciences, Vol. 4 No. 8, 2013, pp. 1193-1199. doi: 10.4236/ijg.2013.48113.
References
[1]   P. Lemke, J. Ren, R.B. Alley, I. Allison, J. Carrasco, G. Flato, Y. Fujii, G. Kaser, P. Mote, R. H. Thomas and T. Zhang, “Observations: Changes in Snow, Ice and Frozen Ground,” In: S. Solomon, D. Qin, M. Manning, Z. Chen, M. Marquis, K. B. Averyt, M. Tignor and H. L. Miller, Eds., Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Cambridge University Press, Cambridge, New York, 2007.

[2]   E. Rignot, A. Rivera and G. Casassa, “Contribution of the Patagonia Icefields of South America to Sea Level Rise,” Science, Vol. 302, No. 5644, 2003, pp. 434-437.
http://dx.doi.org/10.1126/science.1087393

[3]   P. López and G. Casassa, “Recent Acceleration of Ice Loss in the Northern Patagonia Icefield Based on an Updated Decennial Evolution,” The Cryosphere Discuss, Vol. 5, No. 6, 2011, pp. 3323-3381.
http://dx.doi.org/10.5194/tcd-5-3323-2011

[4]   J. F. Carrasco, G. Casassa and A. Rivera, “Meteorological and Climatological Aspects of the Southern Patagonia Icecap,” In: G. Casassa, F. V. Sepúlveda and R. M. Sinclair, Eds., The Patagonian Icefields: A Unique Natural Laboratory for Environmental and Climate Studies, Kluwer Academic, Boston, 2002, pp. 29-41.
http://dx.doi.org/10.1007/978-1-4615-0645-4_4

[5]   R. Garreaud, P. Lopez, M. Minvielle and M. Rojas, “Large-Scale Control on the Patagonian Climate,” Journal of Climate, Vol. 26, No. 1, 2013, pp. 215-230.
http://dx.doi.org/10.1175/JCLI-D-12-00001.1

[6]   J.-C. Aravena and B. H. Luckman, “Spatio-Temporal Rainfall Patterns in Southern South America,” International Journal of Climatology, Vol. 29, No. 14, 2009, pp. 2106-2120. http://dx.doi.org/10.1002/joc.1761

[7]   G. Casassa, “Ice Thickness Deduced from Gravity Anomalies on Soler Glacier, Nef Glacier and the Northern Patagonia Icefield,” Bulletin of Glacier Research, Vol. 4, 1987, pp. 43-57.

[8]   E. M. Kalnay, et al., “The NCEP/NCAR 40-Year Reanalysis Project,” Bulletin American Meteorological Society, Vol. 7, 1996, pp. 437-471.
http://dx.doi.org/10.1175/1520-0477(1996)077<0437:TNYRP>2.0.CO;2

[9]   X.-Z. Liang, et al., “Regional Climate-Weather Research and Forecasting Model,” Bulletin of American Meteorological Society, Vol. 93, No. 9, 2012, pp. 1363-1387.
http://dx.doi.org/10.1175/BAMS-D-11-00180.1

[10]   G. Thompson, P. R. Field, R. M. Rasmussen and W. D. Hall, “Explicit Forecasts of Winter Precipitation Using an Improved Bulk Microphysics Scheme. Part II: Implementation of a New Snow Parameterization,” Monthly Weather Review, Vol. 136, No. 12, 2008, pp. 5095-5115.
http://dx.doi.org/10.1175/2008MWR2387.1

[11]   J. Dudhia, “Numerical Study of Convection Observed during Winter Monsoon Experiment Using a Mesoscale Two-Dimensional Model,” Journal of Atmospheric Science, Vol. 46, No. 20, 1989, pp. 3077-3107.
http://dx.doi.org/10.1175/1520-0469(1989)046<3077:NSOCOD>2.0.CO;2

[12]   A. K. Betts and M. J. Miller, “A New Convective Adjustment Scheme. Part II: Single Column Tests Using GATE Wave, BOMEX, ATEX and Arctic Air-Mass Data Sets,” Quarterly Journal of the Royal Meteorological Society, Vol. 112, No. 473, 1986, pp. 693-709.

[13]   Z. L. Janjic, “The Step-Mountain Eta Coordinate Model: Further Developments of the Convection, Viscous Sublayer and Turbulence Closure Schemes,” Monthly Weather Review, Vol. 122, No. 5, 1994, pp. 927-945.
http://dx.doi.org/10.1175/1520-0493(1994)122<0927:TSMECM>2.0.CO;2

[14]   G. J. van Oldenborgh, S. S. Drijfhout, A. van Ulden, R. Haarsma, A. Sterl, C. Severijns, W. Hazeleger and H. Dijkstra, “Western Europe Is Warming Much Faster than Expected,” Climate of the Past, Vol. 5, No. 1, 2009, pp. 1-12. http://dx.doi.org/10.5194/cp-5-1-2009

[15]   M. Schaefer, H. Marchguth, M. Falvey and G. Casassa, “Modeling Past and Future Surface Mass Balance of the Northern Patagonia Icefield,” Journal of Geophysical Research, Vol. 118, No. 2, 2013, pp. 571-588.
http://dx.doi.org/10.1002/jgrf.20038

[16]   F. Escobar, F. Vidal and C. Garin, “Water Balance in the Patagonia Icefield,” In: R. Naruse, Ed., Glaciological Researches in Patagonia, Japanese Society of Snow and Ice, 1992, pp. 109-119.

[17]   E. Rignot, A. Rivera and G. Casassa, “Contribution of the Patagonia Icefields of South America to Sea Level Rise,” Science, Vol. 302, No. 5644, 2003, pp. 434-437.
http://dx.doi.org/10.1002/jgrf.20038

[18]   M. Falvey and R. D. Garreaud, “Wintertime Precipitation Episodes in Central Chile: Associated Meteorological Conditions and Orographic Influences,” Journal of Hydrometeorology, Vol. 8, No. 2, 2007, pp. 171-193.
http://dx.doi.org/10.1175/JHM562.1

[19]   J. Elbert, M. Grosjean, L. von Gunten, R. Urrutia, D. Fischer, R. Wartenburger, D. Ariztegui, M. Fujak and Y. Hamann, “Quantitative High-Resolution Winter (JJA) Precipitation Reconstruction from Varved Sediments of Lago Plomo 47°S, Patagonian Andes, AD 1530-2002,” The Holocene, Vol. 22, No. 4, 2011, pp. 465-474.
http://dx.doi.org/10.1177/0959683611425547

[20]   T. Shiraiwa, S. Kohshima, R, Uemura, N. Yoshida, S. Matoba, J. Uetake and M. Godoi, “High Net Accumulation Rates at Campos de Hielo Patagónico Sur, South America Revealed by Analysis of a 45.97 m Long Ice Core,” Annals of Glaciology, Vol. 35, No. 1, 2002, pp. 84-90. http://dx.doi.org/10.3189/172756402781816942

 
 
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