Lidar (Lidar (LIght Detection And Ranging)

http://www2.etl.noaa.gov/

P(r) = power received at range rAr = area of receiver

OC3522OC3522 - Remote Sensing of the Atmosphere and Ocean - Summer 2001Summer 2001

LASER Light Amplification of the Stimulated Emission of Radiation

What can be learned from lidar?

http://www.etl.noaa.gov/review/aq/post/1.html

R(z) = Pt(z)/M(z)

http://www-arb.larc.nasa.gov/lite/

Lidar In-space Technology ExperimentLidar In-space Technology Experiment

A 3- backscatter lidar developed by NASA Langley Research Center to fly on the Space Shuttle (September 1994).

355 nm more molecular (Rayleigh) scatter

532 nm nearer most common particle

size

1064 nm nearer most common particle

size

North American Pollution

European Pollution

NASA RESEARCHERS DOCUMENT SHRINKING OF GREENLAND'S GLACIERS

“… as much as 30 feet over five years in some locations.”

Beach Modification by El Nino(Montara, California)http://aol.wff.nasa.gov/aoltm.html

Picture above is a flat map generated by the Mars Orbiter Laser Altimeter (MOLA), an instrument aboard NASA's Mars Global Surveyor, the high-resolution map represents 27 million elevation measurements gathered in 1998 and 1999. (accuracy 2-13 meters)

FIRST GLOBAL 3-D VIEW OF MARS REVEALS DEEP BASIN AND PATHWAYS FOR WATER FLOW

http://pao.gsfc.nasa.gov/gsfc/spacesci/pictures/mola/mars3d.htm

Launch: November 7, 1996 Arrived: September 12, 1997 Mass: 767 kilograms (1,691 pounds) Science instruments: High-resolution Camera, Thermal Emission Spectrometer, Laser Altimeter; Magnetometer/Electron Reflectometer, Ultra-stable Oscillator, Radio Relay System

http://ixeab4.larc.nasa.gov/oracle/

http://wwwghcc.msfc.nasa.gov/sparcle/

CancelledCancelled

To be launched on the ice/cloud/land elevation satellite (ICESat)

10.64m and 532nm (green)