4.1.9. Gaseous Pollutant Monitoring Program (GPMP)
The GPMP network measures hourly meteorological data in support of pollutant monitoring activities. Measured elements include temperature, precipitation, humidity, wind, solar radiation, and surface wetness. These data are generally of high quality, with records extending up to two decades in length.
4.1.10. National Atmospheric Deposition Program (NADP)
The purpose of the NADP network is to monitor primarily wet deposition at selected sites around the U.S. and its territories. The network is a collaborative effort among several agencies including USDA and the U.S. Geological Survey (USGS). Precipitation is the primary climate parameter measured at NADP sites.
4.1.11. USDA/NRCS Snowcourse Network (NRCS-SC)
The USDA/NRCS maintains a network of snow-monitoring stations in addition to SNOTEL (described below). These sites are known as snowcourses. These are all manual sites, measuring only snow depth and snow water content one–two times per month during the months of January to June. Data records for these snowcourses often extend back to the 1920s or 1930s, and the data are generally of high quality. Many of these sites have been replaced by SNOTEL sites, but several hundred snowcourses are still in operation.
4.1.12. Northwest Weather and Avalanche Center Network (NWAVAL)
The Northwest Weather and Avalanche Center (NWAC) operates a network of weather stations in the mountainous areas of the Pacific Northwest, primarily in Washington. These stations are operated in support of NWAC’s primary mission of monitoring avalanche conditions in the mountains of Washington and northern Oregon. Hourly weather and climate elements that are measured include temperature, humidity, wind, and precipitation. Daily measurements are made of snowfall and snowdepth.
4.1.13. Oregon Department of Environmental Quality (ODEQ) Network
The primary mission of ODEQ is to protect and enhance Oregon’s air and water quality. Weather and climate elements are measured by ODEQ stations in support of this primary mission. Measured meteorological elements include temperature, precipitation, wind, and relative humidity.
4.1.14. Oregon Department of Transportation (ODOT) Network
These weather stations are operated by ODOT in support of management activities for Oregon’s transportation network. Measured meteorological elements include temperature, precipitation, wind, and relative humidity.
4.1.15. Remote Automated Weather Station (RAWS) Network
The RAWS network is administered through many land management agencies, particularly the BLM and the Forest Service. Hourly meteorology elements are measured and include temperature, wind, humidity, solar radiation, barometric pressure, fuel temperature, and precipitation (when temperatures are above freezing). The fire community is the primary client for RAWS data. These sites are remote and data typically are transmitted via GOES (Geostationary Operational Environmental Satellite). Some sites operate all winter. Most data records for RAWS sites began during or after the mid-1980s.
4.1.16. NWS Surface Airways Observation Network (SAO)
These stations are located usually at major airports and military bases. Almost all SAO sites are automated. The hourly data measured at these sites include temperature, precipitation, humidity, wind, pressure, sky cover, ceiling, visibility, and current weather. Most data records begin during or after the 1940s, and these data are generally of high quality.
