Low pass filters Wavelet transforms 6 Algorithms 4 Argentina 4 Balanced 4 Climatology 4 Cubic polynomials 4 Dry days 4 Image compression 4 Inter-decadal variability 4 Interannual variation 4 Linear trends 4 Multiwavelets 4 Nonlinear filtering 4 Nonlinear image compression 4 Nonseparable 4 Patagonian coasts 4 Polyphase 4 Quincunx 4 Seasonal cycle 4 Spatial and temporal variability 4 Time series analysis 4 Wavelet analysis 4 annual variation 4 decadal variation 4 regional climate 4 seasonal variation 4 spatial variation 4 temporal variation 4 trend analysis 4