Ocieplenie klimatu = ekologiczna polityczna poprawność?

Dzisiaj czytałam w blogu Łukasza Warzecha kuriozalne zdania:

co do samego ocieplenia klimatu i jego ewentualnych skutków oraz wyjątkowości nie ma bynajmniej zgody w świecie naukowym...Padamy dziś ofiarą ekologicznej politycznej poprawności.

Jednak fakty są takie, ze od publikowania trzeciego raportu IPCC (Międzyrządowy Zespół do spraw Zmian Klimatu) prawie nikt w świecie naukowym nie ma watpliwosci co do ocieplenia klimatu. 

IPCC  został założony w 1988 przez dwie organizacje Narodów Zjednoczonych - Światową Organizację Meteorologiczną (WMO) oraz United Nations Environment Programme (UNEP) w celu oceny ryzyka związanego z działalnością ludzi na zmianę klimatu. Głównymi dokumentami emitowanymi przez IPCC są jego raporty dotyczące zmian klimatycznych. 

Czwarty raport został opracowany przez trzy zespoły pracownicze. Pierwszy zespól opracował naukowe podstawy (Physical Science Basis), drugi zespól skutki (Impacts, Adaptation and Vulnerability), a trzeci zespól zajmował się redukcja (Mitigation of Climate Change). 

W streszczeniu zespołu I czytamy:

Warming of the climate system is unequivocal, as is
now evident from observations of increases in global
average air and ocean temperatures, widespread
melting of snow and ice, and rising global average
sea level

i fakty:

• Eleven of the last twelve years (1995–2006) rank among
  the 12 warmest years in the instrumental record of
  global surface temperature (since 1850). The updated
  100-year linear trend (1906 to 2005) of 0.74°C [0.56°C
  to 0.92°C] is therefore larger than the corresponding
  trend for 1901 to 2000 given in the TAR of 0.6°C
  [0.4°C to 0.8°C]. The linear warming trend over the
  last 50 years (0.13°C [0.10°C to 0.16°C] per decade)
  is nearly twice that for the last 100 years. The total
  temperature increase from 1850–1899 to 2001–2005 is
  0.76°C [0.57°C to 0.95°C]. Urban heat island effects
  are real but local, and have a negligible infl uence (less
  than 0.006°C per decade over land and zero over the
  oceans) on these values.
  
• New analyses of balloon-borne and satellite
  measurements of lower- and mid-tropospheric
  temperature show warming rates that are similar
  to those of the surface temperature record and are
  consistent within their respective uncertainties, largely
  reconciling a discrepancy noted in the TAR.
• The average atmospheric water vapour content has
  increased since at least the 1980s over land and ocean
  as well as in the upper troposphere. The increase is
  broadly consistent with the extra water vapour that
  warmer air can hold.
• Observations since 1961 show that the average
  temperature of the global ocean has increased to depths
  of at least 3000 m and that the ocean has been absorbing
  more than 80% of the heat added to the climate system.
  Such warming causes seawater to expand, contributing
  to sea level rise.
• Mountain glaciers and snow cover have declined on
  average in both hemispheres. Widespread decreases
  in glaciers and ice caps have contributed to sea level
  rise (ice caps do not include contributions from the
  Greenland and Antarctic Ice Sheets).
  
• New data since the TAR now show that losses from
  the ice sheets of Greenland and Antarctica have very
  likely contributed to sea level rise over 1993 to 2003
  (see Table SPM.1). Flow speed has increased for some
  Greenland and Antarctic outlet glaciers, which drain ice
  from the interior of the ice sheets. The corresponding
  increased ice sheet mass loss has often followed
  thinning, reduction or loss of ice shelves or loss of
  fl oating glacier tongues. Such dynamical ice loss is
  suffi cient to explain most of the Antarctic net mass
  loss and approximately half of the Greenland net mass
  loss. The remainder of the ice loss from Greenland has
  occurred because losses due to melting have exceeded
  accumulation due to snowfall.
• Global average sea level rose at an average rate of 1.8
  [1.3 to 2.3] mm per year over 1961 to 2003. The rate
  was faster over 1993 to 2003: about 3.1 [2.4 to 3.8]
  mm per year. Whether the faster rate for 1993 to 2003
  refl ects decadal variability or an increase in the longerterm
  trend is unclear. There is high confi dence thatthe rate of observed sea level rise increased from the
  19th to the 20th century. The total 20th-century rise is
  estimated to be 0.17 [0.12 to 0.22] m.
• For 1993 to 2003, the sum of the climate contributions
  is consistent within uncertainties with the total sea level
  rise that is directly observed (see Table SPM.1). These
  estimates are based on improved satellite and in situ
  data now available. For the period 1961 to 2003, the
  sum of climate contributions is estimated to be smaller
  than the observed sea level rise. The TAR reported a
  similar discrepancy for 1910 to 1990.