Tag Archive: convection

Research brief: Drones used to map thunderstorms

July 16, 2021 10:12 am Published by Comments Off on Research brief: Drones used to map thunderstorms

The overarching goal of the Colorado State University Convective CLoud Outflows and UpDrafts Experiment (C3LOUD-Ex) was to enhance our understanding of deep convective storm processes and how they are represented in numerical models. Pivotal to the experiment was a novel “Flying Curtain” strategy.

UMELB02: Convection and extreme rainfall characteristics using radar

March 30, 2021 10:32 am Published by Comments Off on UMELB02: Convection and extreme rainfall characteristics using radar

The accumulation of rainfall over a given area depends on a range of things, including duration, intensity, and propagation speed. It is the characteristics of convection that ultimately determine these rainfall properties. The idea for this project is to use a simple method to characterise the properties of the most intense convective / rainfall bearing systems from radar data.

Research brief: The shortcomings of convection-resolving models

July 3, 2020 3:53 pm Published by Comments Off on Research brief: The shortcomings of convection-resolving models

A new paper by Martin Jucker and colleagues reveals the choice of a particular convection-resolving model (CRM) has a much larger impact on the results than increasing resolution. It also suggests the behaviour of CRMs is tied to model internals instead of the phenomena they are trying to reproduce.

Research Brief: ROME among the clouds with new radar metric

April 15, 2020 1:51 pm Published by Comments Off on Research Brief: ROME among the clouds with new radar metric

To better assess the degree of organisation in radar observations CLEX researchers developed the Radar Organisation Metric (ROME). ROME's statistical properties suggest it is able to distinguish between the degree of convective organisation, and it also captures different regimes of the monsoon in Northern Australia.

Research brief: Convective extremes don’t always coincide with warm extremes during El Niños

November 25, 2019 12:46 pm Published by Comments Off on Research brief: Convective extremes don’t always coincide with warm extremes during El Niños

This study found in CMIP5 models that are able to simulate both types of events, that convective extremes do not always coincide with warm extremes. The disassociation becomes more distinct under greenhouse warming with higher occurrences of convective extremes than warm extremes.

Research brief: Large scale monsoon circulation impacts Indian Ocean convection

November 25, 2019 12:15 pm Published by Comments Off on Research brief: Large scale monsoon circulation impacts Indian Ocean convection

This paper investigates the annual cycle in cloud and rainfall measurements over the western equatorial Indian Ocean. While there is a single period of strong rainfall over the region during December-January each year, there are two periods of increased high-top clouds associated with convection.

PhD opportunity: The role of wave-cloud coupling in shaping patterns of clouds

September 30, 2019 9:19 am Published by Comments Off on PhD opportunity: The role of wave-cloud coupling in shaping patterns of clouds

This project analyzes satellite images and other observational data to study two-way interactions between convection and tropospheric waves. In particular, it investigates how these interactions influence patterns of convection and clouds. Numerical experiments in the form of high-resolution simulations are designed to support the results.

Girl in the rain Robb Leahy (Unsplash)

Research brief: Here’s what happens when you turn off convective parameterisations

July 6, 2018 2:42 am Published by Comments Off on Research brief: Here’s what happens when you turn off convective parameterisations

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.