It was first published by the MISC@1 climatologist PERSON@1 in NUMBER@1 , with several later modifications by PERSON@2 himself notably in NUMBER@2 and NUMBER@3 .

It was developed by PERSON@1 , a MISC@2 climatologist , around NUMBER@4 -LRB- with several further modifications by himself , notably in NUMBER@2 and NUMBER@3 -RRB- .
