Warming in Bangladesh

Key messages:

  • Under a +2°C and a +3°C global warming, the projected warming is above the global one over most parts of the region
  • Projected warming is more pronounced in the northern part of the region

Why is the content of this map important?

Temperature has direct effects on crop production and energy consumption. It has an indirect effect on hydrology through evaporation and snow melt in the mountains which feed the main rivers.

Which sectors are affected by this result?

Hydrology is affected by the warming (earlier snow melt in Himalayas). Health is affected by the temperature-sensitive vector-borne diseases. Agriculture is also concerned (shorter crop cycles).

What is shown on the maps?

The maps show a temperature increase above 2°C in the northern half (Himalayas and Tibet) and below 2°C in the southern half (India and Bangladesh plains) in the +2°C scenario. Under a +3°C global warming, the temperature distribution shows the same pattern with a magnitude of 1°C higher compared to the +2°C global warming. There is a good agreement between the models.

Details and further information:

The table below shows the monthly average temperature (°C) over the domain. Since part of the domain contains high mountains, temperatures are much colder than just considering the area-average temperature of Bangladesh.

month J F M A M J J A S O N D
1971-2000 1 3 7 12 15 18 18 17 15 11 6 3
+2°C 3 4 9 13 17 20 20 20 19 13 8 5


Additional information:

The climate change indicators have been calculated from the CNRM/CNRM-ARPEGE52, ECEARTH/SMHI-RCA, NORESM/BCCR-WRF331 simulations.


Michel Déqué

Meteo France (MeteoF), France