Climate risk · Rationale

Shifted rainfall seasonality

Form of rainfall variability characterised by a lasting change in the onset, cessation, or duration of rainy seasons across years, making established crop calendars and livelihood practices less reliable; typically a slow-onset, climate-change-driven stressor distinct from within-season unpredictability.

Definition source: IPCC AR6 WGI Ch.8: Changes in monsoon and rainy-season timing · reference

Synonyms

delayed onset, shortened season, phenological shift

Broader

Rainfall variability

Narrower

none

Counts as adaptation

Always (adaptation-specific).

Example of use

CGIAR climate services in Rwanda used seasonal forecasts and historical climate information to support decision-making under shifting rainfall seasons.

Provenance

Domain expert

Identifier

CRK_118 · https://mlolita26.github.io/cgiar-climate-taxonomy/terms/CRK_118
(planned permanent identifier: https://w3id.org/cgiar/climate-taxonomy/CRK_118)