Monitoring of soil freezing depth, snow depth and winter damage to grassland in Northern Norway during the winter and spring 1998-1999

cold zones couche de neige cubierta de nieve frost frost damage gel glace grasslands helada herbage hielo hiver ice invierno leys meteorological observations monitoring neige nieve noruega norway pradera temporal praderas prairie temporaire primavera printemps resistencia invernal snow snow cover soil types spring temperatura temperature tipos de suelos type de sol vigilancia weather reports winter winter hardiness zona fria zone froide