Transcript of Drift of solar constants for the Earth (1), Venus (2) and Marc (3) due to increasing of Sun’s...
- 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: