Transcript Remote Sensing Jeffrey Tongue Meteorologist NOAA/National Weather Service Suffolk County Community College Air Force Weather Agency - Retired.

Remote Sensing
Jeffrey Tongue
Meteorologist
NOAA/National Weather Service
Suffolk County Community College
Air Force Weather Agency - Retired
Remote Sensing
• Radar – Ground Based
• Satellite - Space Based
Doppler Weather Radar
• Christian Andreas Doppler - 1842
– Austrian physicist who first described how the
observed frequency of light and sound waves was
affected by the relative motion of the source and
the detector. This phenomenon became known as
the Doppler effect.
RADAR
• Radio Detection and Ranging
– 1920’s and 1930’s
– World War II
– 1950’s … Refined
– 1960’s … Deployed (WSR-57 Network)
– 1980’s … Television
Doppler Weather Radar
• 1970s - Development
• 1990s – Operational Use
• The Current Radar is the WSR-88D
– (Weather Surveillance Radar 1988 Doppler)
NOAA/National Weather Service
Doppler Radar
Reflectivity
• Amount of “energy” that bounces back
from the “hydrometeor.”
6
• Diameter to the sixth Power ! (D )
• Where it is raining and how hard !
Reflectivity
Doppler Radar
• How fast the “hydrometeor” is moving…
Towards or Away from the Radar
Doppler Velocity
Velocity and Reflectivity
Ground Clutter
Doppler can detect Circulations
Satellites
• Geostationary
– GOES – Geostationary Operational
Environmental Satellites
– One Orbit per Day
– Earth (Geo) Stationary over the equator
– Approximately 35,800 km (22,300 miles)
above the Earth
Type of Images
• Visible (ROYGBIV) – Reflected Sunlight
– Albedo (White is high, Black is low)
• Infrared – Earth Emitted
– Temperature (White Cold, Black Hot)
– Often Enhanced with “Color”
• Water Vapor – High Level Moisture
– Jet Stream
Infrared
http://goes-rap.cira.colostate.edu/GOES-12/GEMS/Original/JPEG/Current/fulldisk_c04.jpg
Visible
http://goes-rap.cira.colostate.edu/GOES-12/GEMS/Original/JPEG/Current/fulldisk_c01.jpg
Water Vapor
http://rammb.cira.colostate.edu/ramsdis/online/
GOES Project Science
http://goes.gsfc.nasa.gov/
http://www.ssd.noaa.gov/goes/east/wfo/bmx.html
Polar Orbiter
• POES – Polar Operational Environmental
Satellite
– Two Passes per day
– MODIS (Moderate Resolution Imaging
Spectroradiometer) on the TERRA and AQUA
Satellites
– NOAA Polar Orbiting Satellites
http://aviationweather.gov/obs/sat/intl/
http://goespoes.gsfc.nasa.gov/poes/products/index.html
MODIS – In Real Time !
http://ge.ssec.wisc.edu/modis-today/
More information on
Remote Sensing
• http://nwas.org/committees/rs/
TEST !
Thank You !!
Electromagnetic Spectrum
Google Earth
• http://goes.gsfc.nasa.gov/
• http://radar.weather.gov/GIS.html
Thank You !!