drift of solar constants for the earth (1), venus (2) and marc (3) due to increasing of sun’s...
TRANSCRIPT
- Slide 1
- Drift of solar constants for the Earth (1), Venus (2) and Marc (3) due to increasing of Suns luminosity. Within an interval formed by carves 4 and 5 the Earths type of climate is not principally varied.
- Slide 2
- Variation of 2 concentration in the atmosphere
- Slide 3
- Temperature deviation from todays value 1 calculation [Budyko et al., 1985] 2 interpretation of proxy indicators [Frakes, 1979]
- Slide 4
- Variation of 2 concentration in the atmosphere
- Slide 5
- Measured concentration of 18 O in surface planktonies [Imbrie et al., 1984] 5e5e 5d5d 1 2 6 1, 2, 5e, 5d, 6 are some isotopic stages
- Slide 6
- Changes of temperature in north western part of Russian Plane ( 0 C) [Klimanov, 1996.] July JanuaryYear YD Al YD Younger Dryas, Al Allered, AT Atlantic warm event AT
- Slide 7
- Northern summer temperature changes ( 0 ) [Bradley, Jones, 1993] Temperature changes ( 0 ), based on measurements in holes Changes of Alpian glaciers length [Oerlemans, 1994] Glaciers: 1 Untere Grindelwaldgletscher, 2 Rhonegletscher, 3 Glacier dArgentiere
- Slide 8
- Climate dynamics and insolation change during last 140 . Parameters of the Earths orbit 10 3 years BP eccentricity obliquity precession summerwinter Insolation at the top of the atmosphere 18 O
- Slide 9
- Latitude-month distribution of the difference in insolation (W/m 2 ) between 21 and 6 ka and the present 21 ka BP 6 ka BP
- Slide 10
- Equation of the general circulation model (GCM) dX/dt=F, X=X(0)
- Slide 11
- Global surface air temperature 21 ka BP-control from different GCMs Simulations forced by CLIMAP SSTs Simulations with atmosphere-mixed layer ocean model
- Slide 12
- Mean annual temperature anomalies (LGM minus modern) averaged by PMIP models Sites where LGM temperatures have been reconstructed
- Slide 13
- Comparison between reconstructed and simulated mean annual temperatures anomalies (LGM minus modern) over the land for all available sites
- Slide 14
- Comparison between reconstructed and simulated mean annual temperatures anomalies (LGM minus modern) over the land for the sites from the areas with simple topography and environments 1 Western Europe and North Africa 2 - East European Plane 3 North-East North America 4 West Siberian Plane 5 Eastern Siberia and Chukotka 6 Greenland 7 Antarctica 8 Mongolia and North China 9 Brazil 10 South Africa 11 Australia
- Slide 15
- Comparison between reconstructed and simulated mean annual temperatures anomalies (LGM minus modern) over the land averaged by the regions pointed in the legend 1 Western Europe (9) and North Africa (1) 2 - East European Plane (5) 3 North-East North America (4) 4 West Siberian Plane (10) 5 Eastern Siberia and Chukotka (6) 6 Greenland (1) 7 Antarctica (1) 8 Mongolia (2) and North China (2) 9 Brazil (1) 10 South Africa (2) 11 Australia (1)
- Slide 16
- Mean annual precipitation anomalies (LGM minus modern) averaged by PMIP models
- Slide 17
- Latitude-month distribution of the difference in insolation (W/m 2 ) between 21 and 6 ka and the present 21 ka BP 6 ka BP
- Slide 18
- PMIP-model averaged temperature anomalies ( 0 ) and anomalies of precipitation (mm/day) 6 ka BP (june, july, august)
- Slide 19
- Relationship between precipitation changes over northern India and changes of surface air temperature over central Asia models
- Slide 20
- Temperature ( 0 C) and precipitation (mm/day) anomalies for July, 6-0 ka BP Simulated and recorded temperature anomalies over land MSU model
- Slide 21
- Changes in zonal annual mean precipitation averaged over Northern Africa (6 0 ka BP, PMIP results) Max and min bounds for the excess precipitation to support grassland
- Slide 22
- Changes in zonal annual mean precipitation averaged over Northern Africa (6 0 ka BP, PMIP results) and impact of ocean feedback Coupled atmosphere-ocean simulation
- Slide 23
- Changes of temperature in north western part of Russian Plane ( 0 C) [Klimanov, 1996.] July JanuaryYear YD Al YD Younger Dryas, Al Allered, AT Atlantic warm event AT
- Slide 24
- Scheme of glaciation of the North America during the Younger Dryase and routes of meltwater discharge
- Slide 25
- Time series of the deviation of salinity, sea surface temperature ( 0 C) and ice (sm) from their initial values in the Denmark Strait Fresh water input to the northern North Atlantic (1250-year time integration of GFDL model) Response of the thermochaline circulation of the North Atlantic to fresh water input to its northern part (1) and Caribean region (2)
- Slide 26
- Measured concentration of 18 O in surface planktonies [Imbrie et al., 1984] 5e5e 5d5d 1 2 6 1, 2, 5e, 5d, 6 are some isotopic stages
- Slide 27
- White noice Red noice Milankovitch cycles
- Slide 28
- Red noice
- Slide 29
- Oscillator for global climate change dT/dt= T(t)+v = 1 + 2 + 3 Scaling time and T denotes the delta-function is the nondimensional delay, measures the influence of the returning signal
- Slide 30
- Linear stability analysis T 0 =0, (1- ) 1/2 T 0 - T 0 -T 0 3 =0 0.5 0 5 10 y=T-T 0 Perturbation from the stationary solution The neutral curve: