Radiosondes

 

 

In South Georgia we have 30 sondes, 30 balloons, and ~1000m3 of He

Approximately 15 – 18 days of science (assuming ships run to time)

 

A sonde will be released at 12:00 UTC everyday irrespective of conditions

this is the synoptic sounding
sounding will be sent to MPA met office

 

12 – 15 sondes for intensive observation periods (IOPs)

will be using model forecast to predict periods of breaking gravity waves
such events will be intensively studied with sondes every 2 hours
wont be able to do too may such periods

 

Halo Photonics  1.5μm Doppler, Dual Polarizing Lidar

 

This lidar is a doppler system fitted with a depolarization channel. The system is sensitive to aerosol backscatter only and retrieves the backscatter coefficient from both the cross and coplanar returns. The doppler utility allows the radial velocity to be determined and hence windspeed and wind direction profiles can be determined if the azimuth and elivation of the beam is varied. When pointing vertically the backscatter and radial velocities are measures at approxivately 1-2Hz.

 

On South Georgia will be

Wind profiles every 10 minutes
Volume scan (360 rotation at fixed elevation) every hour
RHI (fixed azimuth, 180 elevation - horizontal to horizontal via vertical)
Remaining time in vertical stare mode
 

UAS

 

Science Pack