Seminar: Andrew Glikson – Climate tipping points: implications of paleo-climate records

Important lessons regarding current and future climate change trends can be derived from the paleo-climate record. Particularly from abrupt events such as the Oldest dryas (~16 kyr), Older dryas (~14 kyr), Younger dryas (12.9–11.7 kyr) and the ~8.2 kyr Laurentian ice melt event all of which occurred over time-scales of a few decades to a few years.

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Thomas S Lontzek: Catastrophic climate change, economic dynamics and the social cost of carbon.

Climate Change Research Centre (CCRC) 4th Floor, Matthews Building, UNSW, Kensington, NSW, Australia

In the second of his two talks at CCRC, Thomas will present his work on incorporating climate tipping points into dynamic integrated assessment models. The focus will be on calibrating properties of individual tipping elements and on the Markovian formulation of their dynamic processes. Thomas will present how risks of triggering tipping  processes are managed optimally and discuss the implications... View Article

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Dongliang Yuang: Dynamics of the latest El Niño events and the acceleration of global warming

Climate Change Research Centre (CCRC) 4th Floor, Matthews Building, UNSW, Kensington, NSW, Australia

The moored current meter observations in the Maluku Channel of the Indonesian seas suggest that upwelling equatorial Kelvin waves in the spring-summer of 2014 are forced by a significant increase of the Indonesian Throughflow (ITF) transport toward the Indian Ocean, induced by a northward shift of the Mindanao Current retroflection from an intrusion state to... View Article

Graeme MacGilchrist. Reframing the carbon cycle of the subpolar Southern Ocean.

Hales Seminar Room Jaeger 7, 142 Mills road, RSES, Acton, ACT, Australia

Graeme MacGilchrist (University of Princeton). Reframing the carbon cycle of the subpolar Southern Ocean. Global climate is critically sensitive to physical and biogeochemical dynamics in the subpolar Southern Ocean, since this is where the deepest, most carbon-rich layers of the world ocean outcrop and exchange carbon with the atmosphere. Here, we show that the conventional... View Article

Caroline Ummenhofer. Changes in the width of the Indo-Pacific tropical rain belt from climate model simulations and palaeo proxy records

Jaeger 1 Seminar Room Research School of Earth Sciences, 142 Mills Rd, Acton, ACT, Australia

Caroline Ummenhofer (Wood Hole Oceanographic Institute). Changes in the width of the Indo-Pacific tropical rain belt from climate model simulations and palaeo proxy records. The Indo-Pacific tropical rain belt (TRB) marks the high-rainfall region in the tropics traversed by the seasonal migration of the intertropical convergence zone. In particular, changes in the position of the northward... View Article

Seminar: Francois Primeau – Convergent Estimates of Marine Nitrogen Fixation

RC-4082, The Red Centre RC4082, The Red Centre, UNSW, NSW, Australia

Prof. Primeau will present an inverse model to constrain the residual mean circulation of the ocean and to estimate rates of marine nitrogen fixation. The results demonstrate strong spatial variability in the nitrogen to phosphorus ratio of exported organic matter that greatly increases the global nitrogen-fixation rate.

Seminar: Kazuuhiro Yoshida – Ice algae and primary production

Aurora Lecture Theatre 101 Aurora Lecture Theatre, IMAS Waterfront Building, Salamanca, Tasmania, Australia

Kazuuhiro Yoshida (University of Hokaido). Ice algae and primary production. 1pm, Tuesday, February 19. Aurora Theatre, IMAS.

Seminar: ‘In a canter’? Demystifying Australia’s Emissions Budget for Paris. (Tim Baxter)

Australian German Climate and Energy College Level 1, 187 Grattan St, Parkville, Victoria, Australia

Description Australia’s international climate targets create frequent misunderstandings, even among experts. Seemingly straightforward, the reality is that the targets are not as intuitive as they appear, with much of the most important detail hidden from view. This presentation draws back the curtain on our target, unpacking the most common misconceptions along the way. Doing so... View Article