Density Variations and Other Parameters from UARS Wind Measurements
Abstract
A methodology is developed for fitting determinations of tidal winds using a set of basis functions called Hough Mode Extensions (HMEs), which can then be used to estimate densities, winds, temperatures and vertical velocities, in height and latitude regimes where measurements do not exist. The methodology is validated via application to output from a general circulation model, and then is applied to actual space-based measurements. A web site has been set up for user access. The method can also be used to provide monthly-mean measurement-based tidal lower boundary conditions (at any height between 80 and 100 km) for existing and future general circulation models of the thermosphere-ionosphere system. In addition, internal consistency is established between the MLS tidal temperatures at 86 km and previously derived tidal winds at 95 km within the context of tidal theory. Although not definitive, this result is consistent with no bias in the UARS/HRDI winds at 95 km, suggesting that source of the well-known inconsistency between winds measured from the ground and space to primarily reside in the radar wind measurements.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 30, 2005
- Accession Number
- ADA433526
Entities
People
- Jeffrey M. Forbes
Organizations
- University of Colorado Boulder