I have weather data for around 35 years for 11 stations, of hilly terrain. two of them are ground station based, the rest of them are satellite-based data. My question is,
1) under what circumstances one should go for homogenization of such weather data?
2) what kind of methods can be adopted for such analysis for a hilly terrain?
I myself have used Mann-Kendal's trend analysis and Sen's slope estimator for analysing the climatic trend.