High-resolution regional weather and climate modelling at the Bureau of Meteorology


High-resolution regional weather and climate modelling at the Bureau of Meteorology


Charmaine Franklin (@cnf), Bureau of Meteorology



Weston Theatre (and online). See the main workshop help topic for zoom details.





If you want to ask questions of the speaker you must reply to this topic. We encourage all speakers and attendees to continue fruitful discussions in replies to this topic for as long as they wish (weeks, years …). This topic will remain available for as long as this site exists.

Note: This topic is part of the 2023 ACCESS Community Workshop main session

Excellent talk, Charmaine, and wonderful to see the focus on urban representation in regional modeling which is greatly needed as our models are getting higher and higher resolution. Can you also elaborate on how urban representation is implemented? What are the urban processes that are parameterized and what are future work on improving urban representation?


I would be very interested to know whether the Antarctic high resolution model could be informative about the surface melt conditions on the Amery Ice Shelf, and what level of “Land Surface” scheme is used - there is subtle topography and complicated lake and stream systems on the ice shelf in summer.

1 Like

Thanks for your questions - I’ll tag Charmiane @cnf here to reply!

1 Like

Thanks Negin, as well as the fraction of a grid box that is covered by urban surfaces, MORUSES (Met Office and Reading Urban Surface Exchange Scheme) also requires information about the urban morphology (which varies spatially): mean building height, height to width ratio and repeating width ratio.

The presence of a street canyon (building height and street width) in MORUSES allows modelling of short and longwave radiative trapping. Turbulent scalar fluxes are computed through a resistance network that responds to canyon geometry. Bulk parameters such as albedo, emissivity and heat capacity are calculated from the canyon geometry and material properties for roads and walls.

Details in https://doi.org/10.1002/qj.668