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Abstract:

In the last decades, the agricultural areas over La Plata Basin and the Argentinean Pampas have been extended deforestation. With the aim of understanding the potential impacts of land-use changes over the South American climate, several simulations with the regional climate model MM5 were carried out for different idealized land-use scenarios representing agricultural expansion, reforestation and desertification, respectively. Results show a significant warming and drying when forests were replaced by bare soils due to an increase in the net radiation budget and a reduction in the latent heat flux. However, the replacement of forests by crops resulted in a decrease in the net radiation budget at the surface, together with a decrease in the latent and sensible heat fluxes, leading to a significant cooling over central and eastern Argentina and drying over Bolivia and western Paraguay. Finally, the shift from the actual land cover to crops produced a cooling and wetting mainly over northern Argentina, Paraguay and part of Bolivia due to a decrease in the net radiation budget and sensible heat flux and an increase in the latent heat flux. The regional response for these idealized scenarios exceeds the area where the land-use was changed, indicating that non-local mechanisms are important. A reduction in the roughness length when forest is replaced by either crops or bare soil leads to an increase in the northerly winds, which modifies the moisture flux convergence patterns and hence affects precipitation. © Inter-Research 2012.

Registro:

Documento: Artículo
Título:Effects of land-use changes on climate in southern South America
Autor:Pessacg, N.L.; Solman, S.
Filiación:Centro Nacional Patagónico (CENPAT), CONICET, Puerto Madryn, Chubut U9120ACF, Argentina
Centro de Investigaciones del Mar y la Atmósfera (CIMA/CONICET-UBA), DCAO/FCEN, UMI IFAECI/CNRS, Buenos Aires C1428EGA, Argentina
Palabras clave:Feedbacks soil-atmosphere; Land use/land cover; Regional climate model; Southern South America; Agricultural areas; Agricultural expansion; Argentina; Bare soils; La Plata basin; Land cover; Land use/land cover; Land-use change; Land-use scenario; Moisture flux convergences; Net radiation; Nonlocal; Paraguay; Potential impacts; Regional climate models; Regional response; Roughness length; Sensible heat flux; South America; Climate models; Climatology; Crops; Deforestation; Land use; Reforestation; Soils; Heat flux; bare soil; climate change; climate effect; climate feedback; climate modeling; cooling; deforestation; desertification; land cover; land use change; latent heat flux; nature-society relations; net radiation; precipitation (climatology); regional climate; sensible heat flux; warming; Argentina; La Plata Basin; Pampas
Año:2012
Volumen:55
Número:1
Página de inicio:33
Página de fin:51
DOI: http://dx.doi.org/10.3354/cr01119
Título revista:Climate Research
Título revista abreviado:Clim. Res.
ISSN:0936577X
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0936577X_v55_n1_p33_Pessacg

Referencias:

  • Achard, F., Eva, H.D., Stibig, H.-J., Mayaux, P., Gallego, J., Richards, T., Malingreau, J.-P., Determination of deforestation rates of the world's humid tropical forests (2002) Science, 297 (5583), pp. 999-1002. , DOI 10.1126/science.1070656
  • Alexandru, A., De Elia, R., Laprise, R., Internal variability in regional climate downscaling at the seasonal scale (2007) Monthly Weather Review, 135 (9), pp. 3221-3238. , DOI 10.1175/MWR3456.1
  • Baldi, G., Paruelo, J.M., Land use and land cover dynamics in South American temperate grasslands (2008) Ecol Soc, 13 (2), p. 6. , www.ecologyandsocietyorg/vol13/iss2/art6
  • Barreiro, M., Díaz, N., Land-atmosphere coupling in El Niño influence over South America (2011) Atmos Sci Lett, 12, pp. 351-355
  • Beltrán-Przekurat, A., Pielke, R.A., Eastman, J.L., Coughenour, M.B., Modelling the effects of land-use/land-cover changes on the near surface atmosphere in southern South America (2011) Int J Climatol, 32, pp. 1206-1225
  • Betts, A.K., Ball, J.H., Beljaars, A.C.M., Miller, M.J., Viterbo, P.A., The land surface-atmosphere interaction: A review based on observational and global modeling perspectives (1996) J Geophys Res, 101 (D3), pp. 7209-7226
  • Blatter, P., Ruiz, J., Pulido, M., The impact of deforestation of the Gran Chaco in the precipitation of Gran Chaco and surrounding region (2010) Eos Trans AGU, 91 (26). , Meet Am Suppl, Abstract A33C-01
  • Bonan, G.B., Frost followed the plow: Impacts of deforestation on the climate of the United States (1999) Ecological Applications, 9 (4), pp. 1305-1315
  • Chen, F., Dudhia, J., Coupling and advanced land surface-hydrology model with the Penn State-NCAR MM5 modeling system. Part I: Model implementation and sensitivity (2001) Monthly Weather Review, 129 (4), pp. 569-585
  • Costa, M., Pires, G., Effects of Amazon and Central Brazil deforestation scenarios of the duration of the dry season in the arc of deforestation (2010) Int J Climatol, 30, pp. 1970-1979
  • Tendencias y perspectivas del sector forestal en América Latina y el Caribe (2006) Estudio FAO Montes, p. 148. , ftp://ftp.fao.org/docrep/fao/009/a0470s/a0470s00.pdf, Roma
  • Fearnside, P.M., Soybean cultivation as a threat to the environment in Brazil (2001) Environmental Conservation, 28 (1), pp. 23-38. , DOI 10.1017/S0376892901000030
  • Garand, L., Some improvements and complements to the infrared emissivity algorithm including a parameterization of the absorption in the continuum region (1983) J Atmos Sci, 40, pp. 230-244
  • Grell, G.A., Prognostic evaluation of assumptions used by cumulus parameterizations (1993) Monthly Weather Review, 121 (3), pp. 764-787
  • Hong, S.-Y., Pan, H.-L., Nonlocal boundary layer vertical diffusion in a medium-range forecast model (1996) Monthly Weather Review, 124 (10), pp. 2322-2339
  • Hsie, E.-Y., Anthes, R.A., Keyser, D., Numerical simulation of frontogenesis in a moist atmosphere (1984) Journal of the Atmospheric Sciences, 41 (17), pp. 2581-2594
  • Kaimowitz, D., Smith, J., Soybean technology and the loss of natural vegetation in Brazil and Bolivia (2001) Agricultural Techno - Logies and Tropical Deforestation, pp. 195-211. , Angelsen A, Kaimowitz D eds, CAB International, Wallingford
  • Lee, S., Berbery, H., Land cover change effects on the climate of the La Plata Basin (2011) J Hydrometeor, 13, pp. 84-102
  • Magrin, G., García, C.G., Choque, D.C., Giménez, J.C., Latin America. Climate change 2007: Impacts, adaptation and vulnerability (2007) Contribution of Working Group II to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, pp. 581-615. , Parry ML, Canziani OF, Palutikof JP, van der Linden PJ, Hanson CE eds., Cambridge University Press, Cambridge
  • Menéndez, C.G., De Castro, M., Boulanger, J.P., D'Onofrio, A., Downscaling extreme month-long anomalies in southern South America (2010) Clim Change, 98, pp. 379-403
  • Nuñez, M., Ciapessoni, H., Rolla, A., Kalnay, E., Cai, M., Impact of land use and precipitation changes on surface temperature trends in Argentina (2008) J Geophys Res, 113, pp. D06111. , doi:10.1029/2007JD008638
  • Oleson, K.W., Bonan, G.B., Levis, S., Vertenstein, M., Effects of land use change on North American climate: Impact of surface datasets and model biogeophysics (2004) Climate Dynamics, 23 (2), pp. 117-132. , DOI 10.1007/s00382-004-0426-9
  • Pielke, R., Pitman, A., Niyogi, D., Mahmood, R., Land use/land cover changes and climate: Modeling ana - Lysis and observational evidence (2011) WIREs Clim Change, 2, pp. 828-850
  • Saulo, C., Ferreira, L., Nogués-Paegle, J., Seluchi, M., Ruiz, J., Land-atmosphere interactions during a northwestern Argentina low event (2010) Mon Weather Rev, 138, pp. 2481-2498
  • Simmons, A.S., Uppala, D.D., Kobayashi, S., ERA-interim: New ECMWF reanalysis products from 1989 onwards (2007) ECMWF Newsl, 110, pp. 29-35
  • Solman, S., Pessacg, N., Regional climate simulations over South America: Sensitivity to model physics and to the treatment of lateral boundary conditions using the MM5 model (2012) Clim Dyn, 38, pp. 281-300
  • Solman, S., Pessacg, N., Evaluating uncertainties in regional climate simulations over South America at the seasonal scale (2012) Clim Dyn, 39, pp. 59-76
  • Solman, S., Núñez, M., Cabré, M.F., Regional climate change experiments over southern South America. I. Present climate (2007) Clim Dyn, 30, pp. 533-552
  • Stephens, G.L., Radiation profiles in extended water clouds. II. Parameterization schemes (1978) J Atmos Sci, 35, pp. 2123-2132
  • Strengers, B.J., Müller, C., Schaeffer, M., Haarsma, R.J., Assessing 20th century climate-vegetation feedbacks of land-use change and natural vegetation dy - Namics in a fully coupled vegetation-climate model (2010) Int J Climatol, 30, pp. 2055-2065
  • Viglizzo, E.F., Frank, F.C., Ecological interactions, feedbacks, thresholds and collapses in the Argentine Pampas in response to climate and farming during the last century (2006) Quaternary International, 158 (1), pp. 122-126. , DOI 10.1016/j.quaint.2006.05.022, PII S1040618206001595
  • Viglizzo, E.F., Roberto, Z.E., Lertora, F., Lopez Gay, E., Bernardos, J., Climate and land-use change in field-crop ecosystems of Argentina (1997) Agriculture, Ecosystems and Environment, 66 (1), pp. 61-70. , DOI 10.1016/S0167-8809(97)00079-0, PII S0167880997000790
  • Weaver, C.P., Avissar, R., Atmospheric disturbances caused by human modifications of the landcape (2001) Bull Am Meteorol Soc, 82, pp. 269-282
  • West, P.C., Narisma, G.T., Barford, C.C., Kucharik, C.J., Foley, J.A., An alternative approach for quantifying climate regulation by ecosystems (2011) Front Ecol Environ, 9, pp. 126-133
  • Zalba, S.M., Villamil, C.B., Woody plant invasion in relictual grasslands (2002) Biological Invasions, 4 (1-2), pp. 55-72. , DOI 10.1023/A:1020532609792

Citas:

---------- APA ----------
Pessacg, N.L. & Solman, S. (2012) . Effects of land-use changes on climate in southern South America. Climate Research, 55(1), 33-51.
http://dx.doi.org/10.3354/cr01119
---------- CHICAGO ----------
Pessacg, N.L., Solman, S. "Effects of land-use changes on climate in southern South America" . Climate Research 55, no. 1 (2012) : 33-51.
http://dx.doi.org/10.3354/cr01119
---------- MLA ----------
Pessacg, N.L., Solman, S. "Effects of land-use changes on climate in southern South America" . Climate Research, vol. 55, no. 1, 2012, pp. 33-51.
http://dx.doi.org/10.3354/cr01119
---------- VANCOUVER ----------
Pessacg, N.L., Solman, S. Effects of land-use changes on climate in southern South America. Clim. Res. 2012;55(1):33-51.
http://dx.doi.org/10.3354/cr01119