The precipitation data available at the CA-Man, NOBS site in northern Manitoba used a tipping bucket rain gauge. These numbers were used for total annual precipitation in LaThuile analyses. Hence there has been an underestimation because snowfall is missed. To correct this, we have the precipitation data from Thompson airport, located about 50 km from the NOBS site. Although summer time rainfall may be better characterized by the local rain gauge for some studies. posted on behalf of Brian Amiro.