Please could someone explain something to me. It appears to be generally accepted among members here that snowfall after the middle of Feb will be short-lived on the ground due to the strength of the sun making it melt or evaporate. Indeed, during the Best from the East last Feb / Mar that was exactly what happened here in mid-Sussex despite cold uppers and surface temperatures. However, where my wife is from in Russia is further south than here, and so the sun is theoretically even stronger, but fallen snow can stay intact there despite any sun, probably through to mid March. What are the factors at play here?