| download_aao | Download Antarctic Oscillation data | 
| download_ao | Download Arctic Oscillation data | 
| download_asymsam_daily | Download Asymmetric and Symmetric SAM indices | 
| download_asymsam_monthly | Download Asymmetric and Symmetric SAM indices | 
| download_dmi | Download Dipole Mode Index (DMI) | 
| download_enso | Download Southern Oscillation Index and Oceanic Nino Index data | 
| download_mei | Download Multivariate ENSO Index Version 2 (MEI.v2) | 
| download_nao | Download North Atlantic Oscillation data | 
| download_npgo | Download North Pacific Gyre Oscillation data | 
| download_oni | Download Oceanic Nino Index data | 
| download_pdo | Download Pacific Decadal Oscillation Data | 
| download_soi | Download Southern Oscillation Index data |