Abstract: Embodiments for controlling precipitation collection vessels to accurately and efficiently collect, measure, and aggregate precipitation accumulation data are disclosed. In one embodiment according to aspects of the present invention, a computer-implemented method includes measuring a frozen precipitation level of the frozen precipitation in a collection vessel. The method further includes heating the collection vessel to convert the frozen precipitation into melted precipitation. The method further includes measuring a melted precipitation level to determine an equivalent water accumulation of the frozen precipitation.

Abstract: Disclosed is a precipitation gauge including a precipitation receiving member having a water collecting part provided in a shape of a funnel at a lower portion of a cylindrical body and a drain tube, a photodetector installed on an inner sidewall of the cylindrical body to detect snow collected in the precipitation receiving member, heating parts installed on a bottom surface of the water collecting part and a wall of the drain tube to receive a snow signal detected by the photodetector for operation of the heating parts, a rotatable fluid supply unit coupled on a connection tube coupled with the drain tube of the precipitation receiving member perpendicularly to the drain tube, and a flow rate measuring unit provided in a discharge tube coupled with the connection tube provided at a lower portion of the rotatable fluid supply unit to measure a flow rate.

Abstract: A thermal plate precipitation measurement system (300) and a method of operating the thermal plate precipitation measurement system (300) is provided. The thermal plate precipitation measurement system (300) includes a first thermal plate system (301A) with first and second thermal plates (302A, 303A) and a second thermal plate system (301B) with first and second thermal plates (302B, 303B). A precipitation rate can be determined by configuring the first and second thermal plates (302A, 303A) of the first thermal plate system (301A) at a first temperature and configuring the first and second thermal plates (302B, 303B) of the second thermal plate system (301B) at a second temperature different than the first temperature.

Abstract: A thermal plate precipitation measurement system (300) and a method of operating the thermal plate precipitation measurement system (300) is provided. The thermal plate precipitation measurement system (300) includes a first thermal plate system (301A) with first and second thermal plates (302A, 303A) and a second thermal plate system (301B) with first and second thermal plates (302B, 303B). A precipitation rate can be determined by configuring the first and second thermal plates (302A, 303A) of the first thermal plate system (301A) at a first temperature and configuring the first and second thermal plates (302B, 303B) of the second thermal plate system (301B) at a second temperature different than the first temperature.

Abstract: A precipitation gauge for measuring liquid and frozen precipitation is provided according to the present invention that includes a support structure having at least one light sensor, or pair of electrodes, and at least one light source disposed thereon so that the light sensor may receive light that is emitted from the light source. The light sensor or light sensors and the light source or light sources generally extend a substantial height of the support structure. The light sensor or light sensors generate an output signal in response to the amount of light received from the light source. A microprocessor receives the output signal or output signals from the light sensor or light sensors and determines whether precipitation is present between the light sensor or light sensors and the light source or light sources. Based on the output signal or output signals, the microprocessor determines and displays the level of precipitation. The microprocessor may also determine the density of frozen precipitation.

Abstract: An embodiment of the present invention provides a surface sensor system comprising a wet/dry sensor assembly, an electrically isolated passive sensor assembly, a thermally adjustable active sensor assembly, at least one temperature sensor, and a data processing device coupled together as a unit positionable adjacent to a surface, such as an outdoor surface. The unit is configured to determine the presence a surface material containing water or a water-based mixture on the surface and the solid or liquid phase of the surface material.

Abstract: An embodiment of the present invention provides a surface sensor system comprising a wet/dry sensor assembly, an electrically isolated passive sensor assembly, a thermally adjustable active sensor assembly, at least one temperature sensor, and a data processing device coupled together as a unit positionable adjacent to a surface, such as an outdoor surface. The unit is configured to determine the presence a surface material containing water or a water-based mixture on the surface and the solid or liquid phase of the surface material.

Abstract: An apparatus and method for producing a region of vapor super-saturation and particle growth in a laminar flow by surrounding the particle flow with a saturated or super-saturated sheath flow from which vapor diffuses into the aerosol flow. This method is applicable when the mass diffusivity of the condensing vapor is greater than the thermal diffusivity of the carrier gas, such as is the case when water vapor diffuses into air.

Abstract: A precipitation measurement device measures a precipitation rate of falling precipitation. A first probe is exposed to the falling precipitation. A first temperature sensor detects a first probe temperature. A second probe is shielded from the falling precipitation. A second temperature sensor detects a second probe temperature. A heating element heats the first probe and the second probe when turned on, but not when turned off. After being heated and when the heating element is turned off, the first probe cools at a first temperature drop rate, and the second probe cools at a second temperature drop rate. Circuitry processes a difference between the first temperature drop rate and the second temperature drop rate to determine the precipitation rate of the falling precipitation.

Abstract: A rain sensor and a method for installing a rain sensor are provided for a motor vehicle. The rain sensor includes a housing in which at least one printed circuit board is located and which has a light-conducting member, which at least partially closes the housing in the manner of a lid. A plate is located between the light-conducting member and the printed circuit board. During installation, the plate is partially punched through.