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Meteorologist Dr James Kossin said it would take a long
for a new category 6 to be accepted. It would need the USA's National Hurricane Center to start researching more
storms. Dr Kossin hopes to, "inform
discussions about how to better communicate
in a warming world". He said "
increasing" temperatures are caused by greenhouse gas
. This increase in emissions is heating oceans, which gives the water extra
. This makes hurricanes more powerful, with much higher wind
. He believes there will be a greater number of "super-storms" in the
. He said: "These
keep getting stronger as the climate changes."