Towards an Updated Climatology of Overland Tropical Cyclone Maintenance and Intensification in Non-/Weakly Baroclinic Environments
Mentor 1
Clark Evans
Start Date
28-4-2023 12:00 AM
Description
This study presents preliminary findings from a climatology of overland tropical cyclone intensification and maintenance. This climatology updates the prior climatology of Andersen and Shepherd (2014, Int. J. Climatol.) using a longer period of record and state-of-the-art atmospheric and land-surface reanalysis datasets. As in the Andersen and Shepherd (2014) climatology, this climatology uses global IBTrACS (International Best Track Archive for Climate Stewardship) data to determine candidate cyclones, except with the climatology’s ending year extended forward from 2008 to 2021 to increase the number of candidate cyclones. Candidate cyclones are required to maintain or increase their maximum sustained 10-m wind speed for at least one 6-h period while inland by at least 350km to be identified as maintenance or intensification events; other events are considered to be decay events. To date, 306 potential candidate cyclones have been identified, although this climatology continues to be refined (e.g., to eliminate candidate cyclones at or just after landfall). The climatology documents basic properties for each cyclone (e.g., location, time of year, basin) as well as land-surface properties that control surface enthalpy fluxes such as soil type, soil moisture, and soil temperature.
Towards an Updated Climatology of Overland Tropical Cyclone Maintenance and Intensification in Non-/Weakly Baroclinic Environments
This study presents preliminary findings from a climatology of overland tropical cyclone intensification and maintenance. This climatology updates the prior climatology of Andersen and Shepherd (2014, Int. J. Climatol.) using a longer period of record and state-of-the-art atmospheric and land-surface reanalysis datasets. As in the Andersen and Shepherd (2014) climatology, this climatology uses global IBTrACS (International Best Track Archive for Climate Stewardship) data to determine candidate cyclones, except with the climatology’s ending year extended forward from 2008 to 2021 to increase the number of candidate cyclones. Candidate cyclones are required to maintain or increase their maximum sustained 10-m wind speed for at least one 6-h period while inland by at least 350km to be identified as maintenance or intensification events; other events are considered to be decay events. To date, 306 potential candidate cyclones have been identified, although this climatology continues to be refined (e.g., to eliminate candidate cyclones at or just after landfall). The climatology documents basic properties for each cyclone (e.g., location, time of year, basin) as well as land-surface properties that control surface enthalpy fluxes such as soil type, soil moisture, and soil temperature.
