^pClimate;
Center,;
Beijing;
100081,;
China;
^pMeteorologicalAdministration,;
Beijing;
100081,;
China;
^pKey;
Laboratory;
of;
Cryospheric;
Sciences,;
Cold;
and;
Arid;
Regions;
Environmental;
and;
Engineering;
Research;
Institute,;
Lanzhou,;
Gansu;
730000,;
China;
气象观测站; 中国西北; 积雪深度; 时空变化特征; 关键参数; 中国东北地区; 青藏高原; 空间分布;