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Accueil du site → Doctorat → Chine → 2015 → The Numerical Simulation of Different Response of Temperature Variation in the Asian Mid-latitude Arid Area to Two Global Warming during the Past 100 Years

Lanzhou University (兰州大学) 2015

The Numerical Simulation of Different Response of Temperature Variation in the Asian Mid-latitude Arid Area to Two Global Warming during the Past 100 Years

任余龙

Titre : The Numerical Simulation of Different Response of Temperature Variation in the Asian Mid-latitude Arid Area to Two Global Warming during the Past 100 Years

Auteur : 任余龙

Grade : Doctoral Dissertation 2015

Université : Lanzhou University (兰州大学)

Résumé partiel
The asian mid-latitude arid area is the northernmost arid region of the world, across the westerlies and the monsoon climate zone from west to east, with prominent and difference obviously climatic feature, has unique response to global climate change.Research showed that the world had experienced two significant climate warming periods over 100 years, which occurred from the 1920’s to 1940’s and after the 1980’s.The area showed obvious response to the second global warming period,but scarcely any response to the first.The reason is unknown until now.In regard to the problem, firstly, the characteristics of air temperature variation in the asian mid-latitude arid area was studied using the CRU data and the main circulation factors that affects the temperature change were selected. Then for the limitations of CRU only including finite meteorological elements of the surface, the global monthly three-dimensional grid data with 102 years were produced by using numerical simulation.lt has 261evels from the surface to 50hpa, with 2.8125°×2.8125°grid spacing,including complete meteorological elements, which made up for the short-time series and low resolution of the existing data and built a data foundationfor the research of climate change in asian mid-latitude arid area. Then the northern hemisphere polar vortex, the Eurasian circulation and the western pacific subtropical high that affects the temperature change of the asian mid-latitude arid area were scientific studied using these data. And their variant characteristicsand affected relation with the temperature change of the asian mid-latitude arid area in two global warming periods were preliminary revealed. Finally, the characteristics and differences that responding to the east-central equatorial pacific SSTA of the temperature in the asian mid-latitude arid area in two global warming periodswere studied from the view point of the air-seainteraction using numericalsimulation

Mots clés : the asian mid-latitude arid area ;the reason for the difference response to the two global warming ;atmospheric circulation factors ;SST of the east- central equatorial pacific ;

Présentation (CNKI)

Page publiée le 10 avril 2022