Atmospheric Motion Vector (AMV) Gridded Analysis
Analyses are calculated utilizing gridded output from the
auto editing process of the satellite atmospheric motion
vector (AMV) fields. The AMV data are fit to a one degree grid
at the following heights (100, 150, 200, 250, 300, 350, 400,
500, 600, 700, 775, 850, and 925 hPa), with data sparse
regions at each height filled with numerical model output.
Grids consist of u and v wind components.
The background model used is usually the United States
Navy's NOGAPS, but NOAA's GFS model serves as a back up.
The AMV Gridded Analysis fields can be used to calculate various atmospheric
analysis products, such as atmospheric vorticity, convergence, and wind shear.
These analyses products are essential for tropical cyclone (TC) forecasters in
determining TC current intensity and short-term movement as well as future
intensity trends and long-term TC position forecasts. Also, gridded AMV fields
can be used in atmospheric models which require a gridded input field of
measured atmospheric properties.
UW-CIMSS currently maintains an extensive archive of all of our gridded analysis
fields. Please contact the
CIMSS Tropical Cyclone Team if you are interested in
obtaining these analysis fields (Grid files or analysis plots) for your research needs.
For more AMV information, please visit the
International Winds Working Group (IWWG)