Cyclonic activity intensity index (IIC)

We propose a cyclonic activity intensity index (IIC) calculated at the country level which takes into account several parameters such as cyclone wind speed, wind duration but also the part of the territory affected by the cyclonic event. The index is constructed, and it is non-zero, for 128 countries and territories affected by the cyclonic activity recorded over the period 1970-2014 (3915 events).

Most climate change reports predict that the intensity of cyclonic activity is expected to increase with global warming (i.e. rising average temperatures). On the other hand, cyclonic activity and its evolution are and will be different according to regions and countries. In order to take into account the various factors defining cyclone intensity, it is important to measure cyclonic activity through an index that goes beyond the simple cyclone wind speed observed on the Saffir-Simpson scale.

Primary data are provided by the National Oceanic and Atmospheric Administration (NOAA), specifically the National Climatic Data Center – International Best Track Archive for Climate Stewardship (IBTrACS): http://www.ncdc.NOAA.gov/ibtracs/.

We use the “polygon” version v03r07, where every storm is registered for every affected territory through which it passes. This database is published by the UNEP/GRID-Geneva (http://preview.grid.unep.ch/), while IBTrACS initially only provides the path line of the eye of the cyclone.

Copyright

Version : 2018-03-01
© Ferdi, Cerdi

National Oceanic and Atmospheric Administration (NOAA), specifically the National Climatic Data Center - International Best Track Archive for Climate Stewardship (IBTrACS). Data edited by UNEP/GRID Geneva (http://preview.grid.unep.ch/).