Bjerknes is alunarimpact crater that is located in the southernhemisphere on the ruggedfar side of theMoon. The crater lies behind the southeastern limb, and beyond the region that is sometimes brought into sight throughlibration. Thus this crater can not be viewed fromEarth, and has only been seen from orbit. Nearby named craters areClark to the east, andPogson to the south-southwest.
The crater rim is generally circular, but with some slight irregularities along the northeastern quadrant. The rim is relatively sharp-edged, and displays little appearance of wear. The interior floor is rough and irregular, beginning with the slumped material at the base of the inner walls.
The crater is named in honor ofVilhelm Bjerknes, a pioneer in the field of weather forecasting.
Menzel, D. H.; Minnaert, M.; Levin, B.; Dollfus, A.; Bell, B. (1971). "Report on Lunar Nomenclature by the Working Group of Commission 17 of the IAU".Space Science Reviews.12 (2):136–186.Bibcode:1971SSRv...12..136M.doi:10.1007/BF00171763.S2CID122125855.