Precipitation and temperature anomalies over Aotearoa New Zealand analysed by weather types and descriptors of atmospheric centres of action

Weather types (WTs) are often used to assess the relationships between synoptic-scale atmospheric dynamics and local scale climate anomalies. We focus here on Aotearoa New Zealand (ANZ) where pre-existing WTs have recently been characterized using a set of descriptors monitoring daily location intensity their main centres action (ACAs). show that precipitation temperature anomalies associated with in ANZ more complex than previously thought. They do not solely depend type occurrence, but also strongly modulated by within-type changes ACAs, interaction surface terrain. Thus, mere analysis WT occurrence is sufficient explain variability over ANZ. The magnitude sign minimum maximum driven meridional advection temperature, which ACAs. amplitude likewise variable within WTs. Associated mechanisms involve interactions underlying terrain fluxes modifying strength orographic uplift. Finally, extreme can occur under several cyclonic WTs, particularly when low-pressure ACAs significantly intense normal. This situation moisture transport towards ANZ, promoting heavy there. These results provide detailed assessment patterns at both synoptic scales. help improve understanding effects larger patterns, thereby allowing for accurate use analogues forecasting.