Usda May 1987 - Jan 2012
Water and Climate Monitoring Branch Leader and National Radio Spectrum Manager
Climate Sensor Systems, Llc May 1987 - Jan 2012
Hydrologist, Soil Scientist, Technical Consultant
National Resources Conservation Service 1974 - 1987
Hydrologist
Soil Conservation Service Sep 1974 - Oct 1978
Soil Scientist
Education:
Oregon State University 1968 - 1973
Bachelors, Bachelor of Science, Agronomy, Soil Science
Skills:
Hydrology Water Soil Soil Science Remote Sensing Water Quality Environmental Science Water Resources Gis Sustainability Climate Leadership Water Management Arcgis Environmental Awareness Network Design Environmental Policy Management Climate Change Ecology Water Resource Management Natural Resource Management Natural Resources
Interests:
Boating Electronics Flying Hiking Biking
Us Patents
Detector And System For Indicating Pressure Change And Methods Of Use
Garry Schaefer - Clackamas OR, US Jonathan Holmgren - Fairbanks AK, US Jerome Johnson - Fairbanks AK, US
International Classification:
G01L009/04
US Classification:
073/720000
Abstract:
An electronic detector configuration enables the accurate determination of pressure differences in scenarios in which conventional detectors and detector systems introduce inherent thermal inequalities at the interface with their immediate environs. A preferred embodiment of the present invention accurately measures snow water equivalent (SWE) while eliminating the need for fluid-filled pillows that contain environmentally hazardous fluids. By matching the thermal conductivity of)surrounding soil to a detector configuration having an inherently low specific heat, it minimizes effects of differences in thermal conductivity at the snow/soil interface that cause SWE pressure sensor measurement errors. Further, it minimizes thermal effects by keeping soil moisture under the configuration approximately the same as that of surrounding soil. The system is environmentally friendly, has a small footprint, and is inexpensive to implement in arrays coupled to communicators suitable for any number of monitoring and warning functions such as snow avalanche and landslide early warning.