Abstract:
The DSI -- a dynamic weather and climate variable
The Dynamic State Index (DSI) is a scalar diagnostic field that indicates deviations from a steady, adiabatic and inviscid atmospheric basic state. Several works have been demonstrated that the DSI provides a suitable tool to indicate diabatic processes across all scales. Moreover, vanishing DSI values can be related to persistent flow structures, such as blocked weather situations. So far, DSI variants for different atmospheric models have been derived and applied to diagnose e.g. the onset and presence of precipitation or the organization of storms. Novel DSI variants that identify specific polytropic states (isobaric, isochoric, isentropic, isothermal) of the atmosphere will further be used to identify cloud regimes and to study how their feedbacks impact warming.
What is the Joint Oslo Seminar (JOS):
- Atmospheric and climate sciences have a stronghold in Oslo among the four institutions University of Oslo, the Meteorological Institute, CICERO and NILU.
- This joint seminar invites renowned international experts to contribute to an informal series of lectures, meant to create interaction with the Oslo atmospheric and climate science community on recent highlights and analysis in the field.
- All seminars will be held on Thursdays (12:15 pm -1pm).