Atụmatụ Ala Canada
Atụmatụ Ala Canada bú The Canadian Land Surface Scheme (CLASS) bụ atụmatụ parametrization nke ala màkà iji ya mee ihe na ụdị ihu igwe buru ibu. Ọ bụ ihe nlereanya ọkaibe, na-eji usoro nhazi nke anụ ahụ iji gosipụta ike na mmiri nke ahịhịa, snow na ala. A na-emepụta CLASS na ọrụ nyocha n'aka D. Verseghy duziri na Canadian Atmospheric Environment Service.

Hụkwa 

 CCCma - A na-eji CLASS eme ihe na CGCM3.1

Edensibia 

 D. L. Verseghy, "The Canadian Land Surface Scheme (CLASS): akụkọ ihe mere eme ya na ọdịnihu ya," Atmosphere-Ocean, Mpịakọta nke 38, Nke 1, peeji nke 1-13, 2000.
 D. L. Verseghy, "CLASS--A Canadian Land Surface Scheme for GCMS: I. Soil Model," International Journal of Climatology IJCLEU, Mpịakọta nke 111-133, peeji nke 44, 1991.
 D. L. Verseghy, N. A. McFarlane, na M. Lazare, "CLASS-A Canadian land surface scheme for GCMS, II. Ihe nlereanya ahịhịa na ọsọ jikọtara ọnụ, " Int. J. Climatol., Mpịakọta nke 13, Nke 4, peeji nke 347-370, 1993.

Njikọ mpụga 

 Klas
 Usoro Ala