Catalog http://tds.aviso.altimetry.fr/thredds/catalog/el-nino-southern-oscillation/catalog.html

Dataset	Size	Last Modified
`el-nino-southern-oscillation`		`--`
`ENSO_Sst_nino34_Stdz_F52d_Monthly.nc`	`138.4 Kbytes`	`2025-04-03T04:36:20Z`
`ENSO_Sst_nino34_Stdz_F52d_Monthly.asc`	`3.591 Mbytes`	`2025-04-03T04:36:20Z`
`ENSO_Msla_nino34_Stdz_F52d_Monthly.nc`	`95.64 Kbytes`	`2025-04-03T04:46:16Z`
`ENSO_Msla_nino34_Stdz_F52d_Monthly.asc`	`1.700 Mbytes`	`2025-04-03T04:46:16Z`