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Transcript
Physical Aspects of
Climate Change
Philipp Mager 1430434
Institute of Physics
Wissenschaftliches Arbeiten und
Präsentationstechnik
Prof. Dr. Ulrich Hohenester
Observations and Measurements in the Climate System


Global-scale observations since ~1950
Paleoclimatic Reconstructions extend
Records back to millions of years

Together they provide a full view
of change in our climate system




Atmosphere
Oceans
Cryosphere
Land surface
2/8
Drivers of the climate change
3/8
Radiative Forcing

Radiative Forcing = Solar Insolation (irradiance) – Energy radiated to space

Quantifies the change of energy fluxes caused by changes of the CC drivers
Degree of Certainty
contains of


Confidence in the
validity
Quantified measures
of uncertainty
of a finding
4/8
Observed Changes in the Climate System
Temperature


Globally average Temperature raised by
0.89 (+0.20) °C since 1901
The first Decade of the 2000’s has been
the warmest
5/8
Observed Changes in the Climate System
Carbon and other
Biogeochemical cycles

Highest greenhouse gas records since
800,000 years.

The pH of ocean surface water has
decreased by 0.1 since 1750
6/8
Observed Changes in the Climate System

Arctic sea ice extent decreased about
0.5 million km² per decade since 1950

The sea level raised 0.20 m
between 1901 and 2010

90% of net energy increase is stored in
the ocean → increase of temperature
7/8
References / Sources

“Climate Change 2013: The Physical Science Basis” (IPCC 2013 Report)

"Introduction to Atmospheric Chemistry", Daniel J. Jacob, Princeton University
Press, 1999

https://en.wikipedia.org/wiki/Radiative_forcing
8/8