Who was the real Irving P Krick of Pressure?

In the Operation Overlord drama Pressure, Chris Messina stars as American meteorologist Irving P Krick, working on weather forecasts for the 1944 Allied invasion of Normandy. Confident and charismatic, Krick delivers his predictions with pizzazz – yet some of his colleagues doubt that he knows what he’s talking about. Does this unflattering picture reflect the real man, asks Jonathan Wright?