NASA / NOAA

Ninth International Winds Workshop (9IWW), Annapolis, Maryland, USA, 14-18 
April 2008
Abstract

Over 20 years of investigation by NASA and NOAA scientists and Doppler lidar 
technologists into a
global wind profiling mission from earth orbit have led to the current 
favored concept of an instrument
with both coherent- and direct-detection pulsed Doppler lidars (i.e., a 
hybrid Doppler lidar) and a stepstare
beam scanning approach covering several azimuth angles with a fixed nadir 
angle. The nominal
lidar wavelengths are 2 microns for coherent detection, and 0.355 microns 
for direct detection. The two
agencies have also generated two sets of sophisticated wind measurement 
requirements for a space
mission: science demonstration requirements and operational requirements. 
The requirements contain
the necessary details to permit mission design and optimization by lidar 
technologists. Simulations
have been developed that connect the science requirements to the wind 
measurement requirements,
and that connect the wind measurement requirements to the Doppler lidar 
parameters. The
simulations also permit trade studies within the multi-parameter space. 
These tools, combined with
knowledge of the state of the Doppler lidar technology, have been used to 
conduct space instrument
and mission design activities to validate the feasibility of the chosen 
mission and lidar parameters.
Recently, the NRC Earth Science Decadal Survey recommended the wind mission 
to NASA as one of
15 recommended missions. A full description of the wind measurement product 
from these notional missions and the possible trades available are presented 
in this paper.

        http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20080017203_2008016805.pdf


        R

__________________

I was looking for a map of global wind speed distributions.


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