Temperaturjusteringer

Global Historical Climatology Network "homogeniserer" målte temperaturer 

Man kan lure på hvorfor tidligere tiders målt temperaturer bestandig justeres ned. 

Her er et eksempel som meteorologene på Island ikke skjønner noe av:

Her er en del andre eksempler:

Totalen USA - her vises flere justeringer etter hverandre:

Her er en link til "kvalitetskontrollerte" data - NOAA - 

Puerto Casada - Paraguay: 

ftp://ftp.ncdc.noaa.gov/pub/data/ghcn/v3/products/stnplots/3/30886086000.gif

Salta Aero - Argentina:

ftp://ftp.ncdc.noaa.gov/pub/data/ghcn/v3/products/stnplots/3/30187047000.gif

Rivadavia - Argentina:

ftp://ftp.ncdc.noaa.gov/pub/data/ghcn/v3/products/stnplots/3/30187065000.gif

Corrientes AE - Argentina:

ftp://ftp.ncdc.noaa.gov/pub/data/ghcn/v3/products/stnplots/3/30187166000.gif

Andalagala - Argentina: 

ftp://ftp.ncdc.noaa.gov/pub/data/ghcn/v3/products/stnplots/3/30187222001.gif

Paso De Los Libres - Argentina:

ftp://ftp.ncdc.noaa.gov/pub/data/ghcn/v3/products/stnplots/3/30187289000.gif

Maripausoula - Fransk Guiana:

ftp://ftp.ncdc.noaa.gov/pub/data/ghcn/v3/products/stnplots/3/31581415000.gif

Saint Laurent - Fransk Guiana:

ftp://ftp.ncdc.noaa.gov/pub/data/ghcn/v3/products/stnplots/3/31581401000.gif

Puerto_Ayacucho - Venezuela:

ftp://ftp.ncdc.noaa.gov/pub/data/ghcn/v3/products/stnplots/3/31480457000.gif

Tumeremo - Venezuela:

ftp://ftp.ncdc.noaa.gov/pub/data/ghcn/v3/products/stnplots/3/31480453000.gif

Mercedes - Brasil:

ftp://ftp.ncdc.noaa.gov/pub/data/ghcn/v3/products/stnplots/3/31386490000.gif

Artigas - Uruguay:

ftp://ftp.ncdc.noaa.gov/pub/data/ghcn/v3/products/stnplots/3/31386330000.gif

Cuzco - Peru:

ftp://ftp.ncdc.noaa.gov/pub/data/ghcn/v3/products/stnplots/3/30984686000.gif

Puerto Maldonado - Peru:

ftp://ftp.ncdc.noaa.gov/pub/data/ghcn/v3/products/stnplots/3/30984658000.gif

Chimbote - Peru:

ftp://ftp.ncdc.noaa.gov/pub/data/ghcn/v3/products/stnplots/3/30984531000.gif

Iquitos - Peru:

ftp://ftp.ncdc.noaa.gov/pub/data/ghcn/v3/products/stnplots/3/30984377000.gif

Encarnacion - Paraguay:

ftp://ftp.ncdc.noaa.gov/pub/data/ghcn/v3/products/stnplots/3/30886297000.gif

Isla Juan Fer - Utenfor kysten av Chile:

ftp://ftp.ncdc.noaa.gov/pub/data/ghcn/v3/products/stnplots/3/30485585000.gif

Totalt sett har dette medført følgende forandring for den globale temperaturutviklingen: