Drought Severity Index (DSI)

Hello Jim,

Thanks for the response. I have the algorithm based on the original 
paper (Bryant et al. 1994) and subsequent modification by Philips and 
McGregor(1994). The latter gives the formula for calculating the index 
in MS Excel. I'm trying to translate it to R.





Muhammad

Muhammad Rahiz  |  Doctoral Student in Regional Climate Modeling					
Climate Research Laboratory, School of Geography & the Environment	
Oxford University Centre for the Environment
South Parks Road, Oxford, OX1 3QY, United Kingdom 
Tel: +44 (0)1865-285194	 Mobile: +44 (0)7854-625974
Email: muhammad.rahiz at ouce.ox.ac.uk

On 01/12/2010 07:21 PM, Muhammad Rahiz wrote:
  

Does anyone have the code to calculate the drought severity index?


    

Hi Muhammad,
If you mean "does anyone have the algorithm?" it seems pretty hard to 
find. Even that old standby Wikipedia didn't have a description of 
Palmer's algorithm. If you happen to have the algorithm but not the R 
code, perhaps mentioning that might get some responses.

Jim