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How does the ATMOS 41 perform under below freezing and snowy conditions?

How does the ATMOS 41 perform under below freezing and snowy conditions?

The ATMOS 41 is very durable, even in below-freezing and snowy conditions. There is no need to winterize the sensor suite, though we caution users about effects of snow and ice in the anemometer or on top of the pyranometer. There is no heater in the ATMOS 41, so liquid water will only be measured once the ice and snow melt, and snow that might have overflowed the rain gauge funnel will not be accounted for. The air temperature sensor and correction model both perform well. This app note presents ATMOS 41 performance data, recorded at METER’s rooftop testbed during winter 2019. See:

  • What to expect when the pyranometer is covered with a blanket of snow
  • What to expect when the anemometer contains ice/snow
  • Air temperature and correction model performance data
  • Vapor pressure performance data
  • Atmospheric pressure performance data

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