Studying recent hydroclimatic variability in Madagascar despite deficient measurement networks: use of CHIRPS and GRACE data at the scale of the Mahajunga province

Bigot, Sylvain; Dumas, Dominique; Brou, Télesphore Y.; Ramboarison, Rivo; Razanaka, Samuel; Philippon, Nathalie

doi:https://doi.org/10.5194/piahs-384-43-2021

Articles | Volume 384

https://doi.org/10.5194/piahs-384-43-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/piahs-384-43-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 384

Pre-conference publication

|

16 Nov 2021

Pre-conference publication |

| 16 Nov 2021

Studying recent hydroclimatic variability in Madagascar despite deficient measurement networks: use of CHIRPS and GRACE data at the scale of the Mahajunga province

Sylvain Bigot, Dominique Dumas, Télesphore Y. Brou, Rivo Ramboarison, Samuel Razanaka, and Nathalie Philippon

Data sets

TELLUS_GRAC_L3_CSR_RL06_LND_v04, Ver. RL06 v04 F. Landerer https://doi.org/10.5067/TELND-3AC64

Short summary

Given the lack of in situ hydroclimatic measurements and networks in Madagascar, the GRACE (2003–2016) data, combined with other satellite data or fire monitoring, make it possible to establish an interannual assessment of certain climatic and environmental covariations at the northwest scale of the country. The results show a negative trend in continental rainfall and water content, but also a time lag in the linear variations and trends of the Water Equivalent Height and number of fires.