Maui MALT Meteor Radar wind data are available in two formats - standard format and "layer winds" format. The standard format is hourly winds from 80-100 km every 1 km. The layer winds are calculated at 4 altitudes - two of the altitudes correspond to mean heights of airglow emission for OH and O2 and the other two correspond to the height of peak airglow response to wave-induced perturbations in the layer.
The standard format provides hourly winds in the altitude range 80-100 km, sampled every 1 km. The altitude resolution of these estimates is determined by a triangular weighting function with half-width 3 km and base-width 6 km.
Standard format file names are of the form mpyyyymmdd.maui.wnd where:
yyyy is the 4-digit year, mm is a 2-digit month index in the range 01-12, and dd is the day of the month. Note that all dates and times are UT.
Layer winds are calculated using a height weighting function that is comparable either to the weighting function governing OH or O2 airglow emission or to the weighting function corresponding to the airglow brightness response to wave perturbations. The layer winds data consists of hourly winds at 4 different altitudes, corresponding to four layers. The layer wind is calculated using a height weighting function of the form exp(-(z-zo)^2/std^2). The parameters (zo,sigma) are defined as follows for each layer:
Layer 1: stdOH z0=85.9 std=5.5
Layer 2: VuOH z0=89.3 std=6.7
Layer 3: stdO2 z0=91.7 std=4.5
Layer 4: VuO2 z0=94.5 std=5.5
Layer winds files have names of the form mpyyyymmdd.maui.wndlayer.