The NCEP-NCAR 50-Year Reanalysis: Monthly means CDROM and documentation (2001)

by R Kistler, E Kalnay, W Collins, S Saha, G White, J Woollen, M Chelliah, W Ebisuzaki, M Kanamitsu, V Kousky, H van den Dool, R Jenne, M Fiorino