Tag Archive: Southern Hemisphere

ANU01: Southern Hemisphere atmospheric circulation

July 19, 2021 1:35 pm Published by Comments Off on ANU01: Southern Hemisphere atmospheric circulation

Anthropogenic climate change has been most clearly observed in the world's midlatitude regions. The limited number of observations for the Southern Hemisphere has prevented the development of a long-term understanding of these changes. This project aims to fill this critical gap by examining daily changes in Southern Hemisphere atmospheric circulation back to 1830. To do this, the project will build on recently recovered daily instrumental weather observations for southern Australia.

Research brief: New Zealand’s costliest floods caused by atmospheric rivers

March 3, 2021 3:45 pm Published by Comments Off on Research brief: New Zealand’s costliest floods caused by atmospheric rivers

The largest rivers on Earth are not on the ground, but in the sky. Our new study, published in Environmental Research Letters, showed that nine out of ten of the most expensive floods in New Zealand (2007-2017) occurred during an Atmospheric River event, and seven to all ten of the top ten most extreme rainfall events at eleven different locations occurred during Atmospheric Rivers.

Research brief: tropics and SOUTHERN HEMISPHERE subtropics were drier in the mid‑Pliocene Warm Period

November 2, 2020 2:28 pm Published by Comments Off on Research brief: tropics and SOUTHERN HEMISPHERE subtropics were drier in the mid‑Pliocene Warm Period

New study shows November-to-March precipitation (when rainy season peaks over most of the Southern Hemisphere land mass) was significantly reduced both in the Southern Hemisphere tropics and subtropics due to a weakening of the subtropical convergence zones during the mid-Pliocene Warm Period.

Research brief: SAM may be unrelated to mid-latitude weather.

February 12, 2020 1:38 pm Published by Comments Off on Research brief: SAM may be unrelated to mid-latitude weather.

Research by CLEX scientists and colleagues re-examines some of the basic assumptions and interpretations in the theory. In particular, they show the SAM cannot be interpreted as a descriptor of mid-latitude variability and it has little imprint on the weather of the storm track.

Research brief: Data assimilation produces more realistic representation of Antarctic warming

May 13, 2019 2:57 pm Published by Comments Off on Research brief: Data assimilation produces more realistic representation of Antarctic warming

New research confirms the long-term cooling over Antarctica during the last millennium and the delayed onset of anthropogenic warming are found in simulations that assimilate palaeoclimate data. This is not evident in simulations without data assimilation.

CLEX SAM Cluster Workshop and Sea Ice Modelling report

March 18, 2019 3:12 pm Published by Comments Off on CLEX SAM Cluster Workshop and Sea Ice Modelling report

Two workshops, the Sea Ice Modelling Workshop and Centre of Excellence for Climate Extremes “Southern Annular Mode (SAM) Cluster” workshop were held together at the Institute for Marine and Antarctic Studies in Hobart from February 19-21.