6533b7d1fe1ef96bd125d42d

RESEARCH PRODUCT

How abrupt change in surface temperature impacts water cycle over France ?

Léa LaurentAlbin UllmannClaude PerrotXavier AubouyThierry Castel

subject

climate hazard[SDV.SA.AGRO] Life Sciences [q-bio]/Agricultural sciences/Agronomy[SDV.EE] Life Sciences [q-bio]/Ecology environmentabrupt shifwater balance[SDU.STU.CL] Sciences of the Universe [physics]/Earth Sciences/Climatologywarming

description

Along with the rapid warming tendency of the last decades over France, a shift in air temperaturehas been detected in 1987/88, delimiting two main climate periods from 1959 to 2019. Evidence of pre- andpost-shift runoff seasonal differences suggest an impact of this abrupt warming on water cycle evolution. Asyearly precipitation slightly evolve during the studied period, evapotranspiration appears to be one of themain drivers of the hydrological cycle evolution. Spring is marked by a strong increase in evaporativedemand, followed in summer by a rise in water stress and a drying of soil water content. Besides temporaldisparities, this local water cycle evolution depicts different spatial responses over France. Modifications ofclimate hazard linked to water cycle is expected to impact agro-climatic risks and crop yields.

https://hal-agrosup-dijon.archives-ouvertes.fr/hal-03693204