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2. 2. Uplift of Tibetan Plateau and Chinese Climate Difference 2.1 Circumfluence System Structure 2.2 The Impact of Uplift of Tibetan Plateau on Atmosphere.

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Presentation on theme: "2. 2. Uplift of Tibetan Plateau and Chinese Climate Difference 2.1 Circumfluence System Structure 2.2 The Impact of Uplift of Tibetan Plateau on Atmosphere."— Presentation transcript:

1 2. 2. Uplift of Tibetan Plateau and Chinese Climate Difference 2.1 Circumfluence System Structure 2.2 The Impact of Uplift of Tibetan Plateau on Atmosphere Circumfluence 2.3 The Impact of Uplift of Tibetan Plateau on Three Climatic Zones Difference 2.4 Chinese Climatic Zones——Hydro – thermal Structure

2 2.1 Circumfluence System Pattern (1) Cognition Process of Circumfluence System Pattern Cognition Process : simple→complex globality→regional influence of Tibetan Plateau (1) Astronomic Climatic Zones : Tropic Zone—Temperate Zone— Frigid Zone (1) Astronomic Climatic Zones : Tropic Zone—Temperate Zone— Frigid Zone (2) Planetary Wind Belt:controlled by west wind circumfluence rudiment of southwest monsoon (2) Planetary Wind Belt:controlled by west wind circumfluence rudiment of southwest monsoon North Frigid Zone North Temperate Zone Tropic Zone South Temperate Zone South Frigid Zone (1) Planetary Wind Belt North Frigid Zone North Temperate Zone Tropic Zone South Temperate Zone South Frigid Zone (2) Astronomic Climatic Zones Polar Easterly Wind Subpolar Low Prevailing Wind Subtropical High Northeast Trades Equatorial Depression Southeast Trades Subtropical High Prevailing Wind Subtropical Low Polar Easterly Wind Polar High

3 (3) Centre of Atmosphere Movement marine-terrestrial monsoon rudiment of East Asia, Monsoon (4) Plateau Monsoon near ground Circumfluence →modern times monsoon (East Asia Monsoon) (2) Planetary Wind Belt North Frigid Zone North Temperate Zone Tropic Zone South Temperate Zone South Frigid Zone (1) Astronomic Climatic Zones Polar Easterly Wind Subpolar Low Prevailing Wind Subtropical High Northeast Trades Equatorial Depression Southeast Trades Subtropical High Prevailing Wind Subtropical Low Polar Easterly Wind Polar High (3)Marine-terrestrial Comparsion Hydro – thermal Source

4 (2) Circumfluence Pattern Near Ground Prominent Monsoon Circumfluence West Wind Circumfluence High Altitude ( 5000m ) Winter controlled by West Monsoon Circumfluence Summer North : Westerlies Middle : Subtropical High South:Equatorial Depression Near Ground Prominent Monsoon Circumfluence West Wind Circumfluence High Altitude ( 5000m ) Winter controlled by West Monsoon Circumfluence Summer North : Westerlies Middle : Subtropical High South:Equatorial Depression Winter Summer Altitude

5 2.2 The Impact of Uplift of Tibetan Plateau on Atmosphere Circumfluence (1) Spatial Characters of Tibetan Plateau ( 3000 m critical altitude ) Uplift of Tibetan Plateau –Spatial Characters Large Area: East-West 3000 km,South-North 1500 km, accounting for ¼ of land area of China, The width of South-North accounting for 1/3 of Westerlies. High Altitude: Average 4500m, accounting for 1/3 Troposphere. Mid-low Latitude:25ºN-40ºN, on the transition area of Westerlies and Subtropical High. Tropopause Altitude 4500m

6 Embranchment Function : Westerlies branches at winter half year Embranchment of winter wind Embranchment Function : Westerlies branches at winter half year Embranchment of winter wind (2) Dynamical Function of Tibetan Plateau Dry and Warm Strengthen Accumulation of cold air maintains subsidence airflow dry and cold. Block off Western weather system weaken Northwest stretches, Precipitation increases on Plateau brim More wet on the wind sweep More dry on the plateau. Block Off Function : Block off northward of Indian Ocean hydrosphere Precipitation increases on Plateau brim Block Off Function : Block off northward of Indian Ocean hydrosphere Precipitation increases on Plateau brim

7 (3) Caloric Function of Tibetan Plateau Plateau Monsoon East Asia Monsoon Prevailing Wind Direction Opposition Flying to the inland Dry and warm Winter Monsoon Influence increases Subsidence airflow more dry and warm

8 2.3 The Impact of Uplift of Tibetan Plateau on Three Climatic Zones Difference Three Natural Belts Evolvement Tendency of China Evolvement TendencyOriginal Background Influence Typical Eastern Monsoon Region Drought Western Region Drought and Cold Tibetan Plateau Land Sea Monsoon, Humid Inland,Arid,Sparse Grassland, Grassland Desert Altitude of Plateau Surface <2000m, Subtropical Forest Grassland, Grassland Climate 1.Winter monsoon direction expands towards south-force increasing 2.Plateau monsoon extends Land sea monsoon intension-large annual temperature differences,rainfall concentrated in summer 3.Construction and fadeaway control monsoon advance and retreat 4.Comparing with other regions of same latitude, temperature belts in monsoon region move to south 1.Quicken accumulation and subsidence of cold air 2.Blocking Indian Ocean water vapor, disturbing Pacific Ocean water vapor westward 3.Plateau monsoon intensify subsidence of aircurrent in winter and vaporization in summer 4.Intensify drought extent,expand arrange 1.Plateau block Indian Ocean water vapor,Pacific water vapor, becoming drought inside 2.Decreasing temperature in plateau,turning cold 3. Thermal action,forming plateau monsoon

9 2.4 Chinese Climatic Zones——Hydro – thermal Structure (1) Quantity of Heat Belt Annual Average Temperature of China(°c) Annual Temperature Range

10 Annual Average Temperature of China

11 ≥10 ℃ accumulated temperature division : Cool Temperate Zone,Temperate Zone, Warm Temperate Zone,Subtropical Zone,Torrid Zone Plateau Temperate Zone, Plateau Cool Temperate Zone,Plateau Frigid Zone Outlet of grain problems : advance multiple cropping index , where is the most potential area ? Quantity of Heat Belt of China

12 Main Air Masses : Pc Polar Region Continental Air Mass ( Dry and Cold , Move to Becoming Winter Wind ) Denaturalization Pc Tc Tropic Continental Air Mass Monsoon and Precipitation Belt Precipitation Belt : Cold Wave Cold Front (Pc/ Denaturalization Pc) Kunming Quasi-stationary Front ( Denaturalization Pc/Tc ) South China Quasi-stationary Front ( Between Denaturalization Pc ) Winter Wind and Precipitation Belt

13 Main Air Mass: Tm Tropic Ocean(Move to Southeast Monsoon ) Em Equator Ocean ( Move to Southwest Monsoon ) Denaturalization Pc Monsoon and Precipitation Belt Summer Wind and Precipitation Belt Precipitation Belt : Climate Front (Tm/ Denaturalization Pc) March with Winter Monsoon Equatorial Front (Tm/Em ) Interface of Southeast Monsoon and Southwest Monsoon Cold-front Cyclone ( Typhoon is the Main Precipitation Airflow )

14 Average of the Whole Country : 629mm Taking drought axis as center to southeast mm ( 80 times ) to northwest mm ( 8 times ) Three Important Isolines : 800mm 400mm 250mm Average of the Whole Country : 629mm Taking drought axis as center to southeast mm ( 80 times ) to northwest mm ( 8 times ) Three Important Isolines : 800mm 400mm 250mm Annual Average Precipitation To Kexun Huo Shaoliao

15 Annual precipitation of China J.Y. LIU, D.F. ZHUANG, D. LUO, X. XIAO; Land-cover classification of China: integrated analysis of AVHRR imagery and geophysical data; INT. J. REMOTE SENSING, 2003, 24(12):

16 Moisture Regime of China Drought Axis Dividing line of desert and sandy land Aridity Index (Annual Rainfall) 1. Dividing line of forest and grassland 3. Dividing line of paddy land and glebe 2. Dividing line of north and south Key Words : Hydrosphere Route Way Drought Axis The Tail-end of Monsoon Desiccation Degree : >1Wetness Half Wetness 1.5-2Half Aridity >2 Aridity Landscape and Agriculture Key Words : Hydrosphere Route Way Drought Axis The Tail-end of Monsoon Desiccation Degree : >1Wetness Half Wetness 1.5-2Half Aridity >2 Aridity Landscape and Agriculture

17 Hydro – thermal Structure (2) Climatic Zones Difference A AB China Heat Belt Dividing line of desert and sandy land Aridity Index (Annual Rainfall) 1. Dividing line of forest and grassland 3. Dividing line of paddy land and glebe 2. Dividing line of north and south Drought Axis

18 Regional Location of China Marine-Terrestrial Mid- Latitude Three Geotectonic Zones Tibetan Plateau Sea Area Monsoon(Eastern) Drought (Inland) The Monsoon Region of East China Northwest Arid Region of China The Cold Regions of the Tibetan Plateau Lagoonmarine- Continental Transition Delta Drought-Wet Transition Coastal Area Northern Transition Region Southwest Transition Region Northwest Transition Region Warm-Wet Cold-Wet Transition Warm-Dry Cold-Dry Transition Latitude Seabed Latitude BeltsLongitude Belts Three Dimensional Belts Model of Climatic Zones Differentia of China B

19 Mid-Western Region : Shaanxi,Gansu,Ningxia, Inner-Mongolia ( Midwest ) 1 ) LUCC of different relief units 2 ) Change of natural belts 3 ) Difference between dene,desert and Gobi 4 ) Corresponding relationship of ice cover and oasis 5 ) Change of water 6 ) Characters and relation of loess Plateau and inner-mongolia Plateau Mid-Western Region : Shaanxi,Gansu,Ningxia, Inner-Mongolia ( Midwest ) 1 ) LUCC of different relief units 2 ) Change of natural belts 3 ) Difference between dene,desert and Gobi 4 ) Corresponding relationship of ice cover and oasis 5 ) Change of water 6 ) Characters and relation of loess Plateau and inner-mongolia Plateau 01 中国地理 · 第二章 Tibetan Region : Content : 1 ) Change from plateau brim to inner land cover 2 ) Kop glacier and plateau lake groups and their change 3 ) Characters of Qaidam Basin 4 ) Land cover of river fountain region 5 ) Contrast of 4 plateaus of China Tibetan Region : Content : 1 ) Change from plateau brim to inner land cover 2 ) Kop glacier and plateau lake groups and their change 3 ) Characters of Qaidam Basin 4 ) Land cover of river fountain region 5 ) Contrast of 4 plateaus of China Look at China from Outer Space - Exercitation on Reading Remote Sensing Image western Region

20 North Region : Heilongjiang,Jilin,Liaoning, Inner-Mongolia ( Mideast),Shanxi,Hebei,Shandong and Henan Content : 1 ) LUCC of different relief units 2 ) Change of water 3 ) Characters and difference of Northeast Plain and Northern China Plain 4 ) Degradation of grassland,wind erosion and water and soil soil and water erosion 5 ) Forest cover characters of northeast forest region North Region : Heilongjiang,Jilin,Liaoning, Inner-Mongolia ( Mideast),Shanxi,Hebei,Shandong and Henan Content : 1 ) LUCC of different relief units 2 ) Change of water 3 ) Characters and difference of Northeast Plain and Northern China Plain 4 ) Degradation of grassland,wind erosion and water and soil soil and water erosion 5 ) Forest cover characters of northeast forest region 01 中国地理 · 第二章 South Region : Shanghai,Jiangsu,Zhejiang,Fujian,Hunan,Hubei,Jiangxi,Anhui,Sichuan,Chengd u,Yunnan,Guizhou,Guangzhou,Guangdong and Hainan Content : 1 ) LUCC of different relief units 2 ) Land use and soil and water erosion of mountainous region and knap 3 ) Characters of plain,delta and basin 4 ) East-west difference of Yun-Gui Plaetau 5 ) Forest cover characters of southwest forest region South Region : Shanghai,Jiangsu,Zhejiang,Fujian,Hunan,Hubei,Jiangxi,Anhui,Sichuan,Chengd u,Yunnan,Guizhou,Guangzhou,Guangdong and Hainan Content : 1 ) LUCC of different relief units 2 ) Land use and soil and water erosion of mountainous region and knap 3 ) Characters of plain,delta and basin 4 ) East-west difference of Yun-Gui Plaetau 5 ) Forest cover characters of southwest forest region North Region South Region


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