caa a22 4500 445301244 CHVBK 20180317142558.0 cr unu---uuuuu 170323e20101101xx s 000 0 eng 10.1007/s11430-010-4032-x doi (NATIONALLICENCE)springer-10.1007/s11430-010-4032-x Evolution of desertification in a two-dimensional energy balance model coupled with thermodynamics and dynamics [Elektronische Daten] [JiPing Chao, YaoKun Li] The relationship between desert evolution and change in albedo has been investigated quasi-analytically using a zonal mean two-dimensional energy balance model which considers the radiation transmission process due to thermodynamics and boundary layer movement caused by kinetics. A climate state including temperature, zonal wind, meridional wind and vertical wind can be simulated according to the current zonal distribution of albedo. Given desert distribution, characterized by the value and distribution of albedo, the response of climate on albedo has been studied to analyze the evolution of desert climate. One significant result is that the simple model can reproduce mean meridional circulation. Another result indicates that climate corresponds to two equilibria. This happens when the junction temperature between vegetation and desert is higher than a certain critical value. As for the first equilibrium, the desert belt is predicted to move southward in the northern hemisphere with the increasing values of albedo, which corresponds to the current trend of climate change. For the second equilibrium, vegetation will expand northward with increasing values of albedo, which would indicate a narrowing of the desert belt. In order to determine if the two equilibria exist, new physical models are needed. Science China Press and Springer-Verlag Berlin Heidelberg, 2010 two-dimensional energy balance model nationallicence desertification nationallicence two equilibria nationallicence Chao JiPing National Marine Environmental Forecasting Center, 100081, Beijing, China aut Li YaoKun State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, 100029, Beijing, China aut Science China Earth Sciences SP Science China Press 53/11(2010-11-01), 1726-1733 1674-7313 53:11<1726 2010 53 11430 https://doi.org/10.1007/s11430-010-4032-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11430-010-4032-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chao JiPing National Marine Environmental Forecasting Center, 100081, Beijing, China aut NATIONALLICENCE 700 1- Li YaoKun State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, 100029, Beijing, China aut NATIONALLICENCE 773 0- Science China Earth Sciences SP Science China Press 53/11(2010-11-01), 1726-1733 1674-7313 53:11<1726 2010 53 11430 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer