Snow pillow

{
  "id": "MLC-T-MET-002537",
  "term": "Snow pillow",
  "field": "Meteorology and atmospheric science",
  "definitions": [
    "A device used to measure the water equivalent of a snowpack by weighing the snow that accumulates on its surface. It consists of a large, fluid-filled bladder or multiple bladders connected to a pressure transducer. The pressure exerted by the overlying snow is converted into a measurement of its water content, providing continuous data for hydrological forecasting.",
    "1) A window of snow deposited in the immediate lee of a snow fence or ridge.\nor\n\n2) In hydrologic terms, an instrument used to measure snow water equivalents. Snow pillows typically have flat stainless steel surface areas. The pillow\nbelow this flat surface is filled with antifreeze solution and the pressure in the pillow is related to the water-equivalent depth of the\nsnow on the platform. One great advantage of snow pillows over a snow survey is the frequency of observations, which can be as\nhigh as twice per day."
  ],
  "references": [
    "NWS Glossary"
  ],
  "url": "https://mlchart.com/terminology/meteorology/snow-pillow/"
}