Le climat – Réfléxions

Anomaliea spatiales et temporelles qui influencent la circulation atmosphérique


NOAA https://www.climate.gov/enso

Climat – observatoire mondial

Les 3 centre de références
NASA, NOAA and UK Met Office
Nasa | Noaa  |  UK Met Office

This visualization illustrates Earth’s long-term warming trend, showing temperature changes from 1880 to 2015 as a rolling five-year average. Orange colors represent temperatures that are warmer than the 1951-80 baseline average, and blues represent temperatures cooler than the baseline.
Credits: GSFC Scientific Visualization Studio


OMM – Presse

Communiqué de Presse | Lien |

Perspectives Fin 2016. INFO-NIÑO/NIÑA: Situation actuelle et perspectives

Publish Date: 19 octobre 2016




Ressource : http://www.metoffice.gov.uk/hadobs/hadcrut4/

Update: Version HadCRUT. is now available. Release notes for this version can be found here.

HadCRUT4 is a gridded dataset of global historical surface temperature anomalies relative to a 1961-1990 reference period. Data are available for each month since January 1850, on a 5 degree grid. The dataset is a collaborative product of the Met Office Hadley Centre and the Climatic Research Unit at the University of East Anglia.

Brief description of the data

The gridded data are a blend of the CRUTEM4 land-surface air temperature dataset and the HadSST3 sea-surface temperature (SST) dataset. The dataset is presented as an ensemble of 100 dataset realisations that sample the distribution of uncertainty in the global temperature record given current understanding of non-climatic factors affecting near-surface temperature observations. This ensemble approach allows characterisation of spatially and temporally correlated uncertainty structure in the gridded data, for example arising from uncertainties in methods used to account for changes in SST measurement practices, homogenisation of land station records and the potential impacts of urbanisation.

The HadCRUT4 data are neither interpolated nor variance adjusted.

Map of combined land-surface and sea-surface temperature anomalies from HadCRUT4