Andre Brown has been doing more than just studying film of the Giants’ season-opening loss to the Cowboys, when Big Blue committed six turnovers. He also has been paying attention to the wintry forecast for Sunday’s game against Dallas, when it’s expected to be in the 20s with high winds at MetLife Stadium. “They said it’s supposed to snow,” the running back said after practice Friday. “I’ve never played in the snow, so that would be fun.” Snow or not, it will likely be hard for Eli Manning and the passing game, which should make Brown’s role even more vital than it has been the last few weeks during the Giants’ four-game winning streak. “The run game, the physical aspect of the game does come to the front when weather is like that,” coach Tom Coughlin said. The coach is confident Brown will be up to the task and his teammates will feed off of him. “He’s got that ability,” Coughlin said. “He’s a big man with outstanding speed and if he gets a crack, he can go. That’s what we’re hoping for, but he’s [also] done a good job in pass protection and we’ve always counted on him coming out of the backfield because he does have good hands.” That could be his most important trait of all on Sunday, since Brown will have to do a better job of holding onto the ball than David Wilson did, when his two fumbles helped lead to six turnovers in a 36-31 loss in Dallas. Brown hasn’t put up any fancy numbers since joining the Giants backfield, but he hasn’t fumbled in 48 carries this season.