Interannual variation annual variation 10 Climatology 8 Argentina 6 seasonal variation 6 Atmospheric movements 4 Cubic polynomials 4 Dry days 4 Inter-decadal variability 4 Linear trends 4 Low pass filters 4 Patagonian coasts 4 Seasonal cycle 4 Seasonal variation 4 Spatial and temporal variability 4 Temperature 4 Time series analysis 4 Wavelet analysis 4 decadal variation 4 regional climate 4 spatial variation 4 temporal variation 4 trend analysis 4 twentieth century 4 wavelet analysis 4 Airglow 2 Airglow data 2 Antarctic Circumpolar Current 2 Antarctic fronts 2 Antarctic zones 2