Potential impacts of 1.5 °C, 2 °C global warming levels on temperature and rainfall over Madagascar
Bibliographic Data
| ID | 15547485 |
|---|---|
| Authors | Rondrotiana Barimalala (0000-0001-7948-7699, University of Cape Town, corresponding author), N Raholijao, Wilfried M Pokam (0000-0002-1993-5098, Université de Yaoundé I), C J C Reason (0000-0002-3224-5243, University of Cape Town) |
| Year | 2021 |
| Volume | 16 |
| Issue | 4 |
| Pages | 044019-044019 |
| Publication date | 2021-03-02 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Environmental Research Letters (JOURNAL) |
| Journal identifiers | ISSN: 1748-9326 • E-ISSN: 1748-9326 |
| Publisher | IOP Publishing (PUBLISHER • GB) |
| DOI | 10.1088/1748-9326/abeb34 |
| OpenAlex | W3135806928 |
| Language | EN |
| References cited | 34 |
Outputs from 25 regional climate models within the coordinated regional downscaling experiments—Africa are used to assess the impacts of the 1.5°C and 2°C global warming levels (GWLs) over Madagascar. A robust increase in the annual mean temperature ranging from 0.9°C to 1.2°C (1.3°C–1.8°C) is projected in the 1.5°C (2°C) GWL. The west and southwestern parts of the island display the highest rise in temperature. On the other hand, the changes in rainfall signals depend on the location, the months within the rain season and the warming level with the models showing a large uncertainty in the signal of changes. During early summer, the west and southwest regions exhibit an increase in total rainfall accompanied with more wet spell days and excessive amounts of extreme rainfall. In contrast, the east and the north are characterized by a deficit in total rainfall and wet spell days while the maximum number of dry spells increase. The change signals are more pronounced in the 2°C GWL. From January to April, an overall increase in total and extreme rainfall is projected over the island. The two warming levels agree on the delay in the rainfall onset and shortening of the rainfall season with the 2°C GWL depicting more modest changes in the west and southern parts of the country compared to that of 1.5 °C GWL. These results have important implications not only for the development of the country but also for the endemic biodiversity which is already suffering from the impacts of climate change
Atmospheric sciences · Climate change · Climatology · Downscaling · Geography · Global warming · Maximum temperature · Meteorology · Precipitation · Climate change impacts on agriculture · Climate variability and models · Environmental Science · Meteorological Phenomena and Simulations · Geology · Oceanography
On the need for regional climate information over Africa under varying levels of global warming
Projected effects of 1.5 °C and 2 °C global warming levels on the intra-seasonal rainfall characteristics over the Greater Horn of Africa
The southern African climate under 1.5 °C and 2 °C of global warming as simulated by Cordex regional climate models
The effects of 1.5 and 2 degrees of global warming on Africa in the Cordex ensemble
Potential impact of 1.5 °C and 2 °C global warming on consecutive dry and wet days over West Africa
Consequences of 1.5 °C and 2 °C global warming levels for temperature and precipitation changes over Central Africa
Projected climate over the Greater Horn of Africa under 1.5 °C and 2 °C global warming
Indices for monitoring changes in extremes based on daily temperature and precipitation data
| Citation velocity | historical |
|---|---|
| Highly cited | No |