Air Temperature and Humidity Sensor
Air temperature and humidity sensors are used to monitor weather conditions above the surface of the water. Air temperature affects wind speed and direction, relative humidity, the rate of evaporation and precipitation in the atmosphere. Air temperature is measured in numerous ways including thermistors, thermocouples and mercury thermometers. Humidity is the amount of water vapour in the air and can indicate precipitation, dew or fog. Humidity is typically measured as absolute humidity (the water content of air), relative humidity (measures the current absolute humidity relative to maximum for that temperature), or specific humidity (as a ratio of water vapour content to the total air content based on a mass).
In addition to oceanographic sensors, measurements from instruments above the surface of the ocean are useful to discover interactions between the atmosphere and hydrosphere.
Individual instruments of the above category, which are (or have been) connected to our observatories. Click an instrument for detailed information.
Click the instrument categories below for descriptions and lists of instruments belonging to that category.