Figure: Red dots show location of
SHIMMER MCs on 13 June 2007. Colors
show NOGAPS-ALPHA saturation ratios at ≈82 km.
A new data assimilation capability in NOGAPS-ALPHA
), recently developed by
scientists in Codes 7640, 7220 and 7530, has been used to generate the first global atmospheric
analysis fields that extend from the ground to the edge of space (≈100 km altitude).
This was achieved by
assimilating high-altitude temperature and water vapor measurements
from NASA satellites. Mesospheric saturation ratios at around 83 km computed from these NOGAPS-ALPHA
fields have self-consistently reproduced the 3 mid-latitude mesospheric clouds (MCs) observed by
over the northwestern United States on
13 June 2007 (see opposite). Results of this work were recently published
in the Journal of Atmospheric and Solar-Terrestrial Physics
, worked which received a 2009 ARPAD award from NRL.