February 12, 2019 9:21 am
Calibration errors in the widely used Global Inventory Monitoring and Modeling System Version 3 NDVI (GIMMSv3.0g) dataset caused significant errors in the trends over some of Australia’s dryland regions. Though identified over Australia, the problematic calibration in the GIMMSv3.0g dataset may have effected dryland NDVI values globally. These errors have been addressed in the updated GIMMSv3.1g which is strongly recommended for use in future studies.
September 18, 2018 9:59 am
Climate change is affecting weather patterns in many locations. In East Africa, changing rainfall would challenge the livelihoods of farmers. However, perceptions of local farmers and data from local weather stations differ. Is rainfall changing? How can we understand these two important information sources?
August 14, 2018 11:33 pm
This research demonstrates how cloud processes, steep mountains, tropical coastlines, the daily changes in solar insolation and planetary-scale waves work together to cause large variations in the tropical heating that drives global circulation patterns. Many of these effects are under-represented in global climate models.
August 14, 2018 3:59 pm
Despite the improvement in our understanding, numerical models and observations, El Nino events have dramatic impacts on climate and extreme weather around the globe. This project will further study the nature of this stochastic forcing and its relationship to background SSTs.
August 14, 2018 3:04 pm
In this project, we will investigate the clustering of thunderstorms using satellite observations of rainfall in the tropics. In particular, we will examine the question of whether rainfall in the tropics is becoming more clustered, and what effect this may have on heavy precipitation now and into the future.
August 14, 2018 2:49 pm
The associations between rainfall variability, ENSO and temperature appeared to be stationary early in the record, but there was a hint that there was some evidence of a shift in the late 1990s. Has that shift continued? Alternatively, have the rainfall variance characteristics returned to what was observed earlier in the record? This project will use the latest observed datasets to explore these questions.
August 4, 2018 5:17 am
The Extreme Rainfall Research Program has put personnel in place and is working on research into how extreme rainfall is represented in models.
July 12, 2018 6:46 am
Short, extreme rainfall events will increase in a warming climate, according to observations and climate models. Australian observations suggest these storms become smaller in size, with increased rainfall concentrating even more around the centre of the storm cell. However, there has been recent contradictory climate model research that suggests storm areas may become larger. To understand this contradiction the researchers compared two different model types to real world observations of storm cell changes that occurred with rising temperatures. An area... View Article
July 6, 2018 2:42 am
Convective parameterizations are widely believed to be essential for realistic simulations of the atmosphere, but are crude in today's weather and climate models. CLEX researchers, report on what happens when a number of these models are run with these schemes simply turned off.