What are these charts?
Radiosondes
(weather balloons) measuring upper air temperatures and winds are routinely
launched from five stations around
New Zealand. At Whenuapai, Paraparaumu and Invercargill they are launched
at 1100 and 2300 NZT. At Raoul Island
balloons are launched daily at 1100 NZT. Radiosonde flights are no longer made from Chatham Islands.
The upper air data are displayed on tephigrams. They are updated at approximately
0200-0240 and 1400-1440 NZT.
GIF images for viewing on the screen and high resolution postscript
(PS) images for printing are provided. To download the postscript images, you
will need to use the "Save Link As..." option on your web browser. Otherwise
meaningless data will appear on the screen. If any of the images appear
out of date, try hitting the reload button on your browser.
An archive of tephigram data is available, normally a charge will be
made for recovering data from the archive, for details, contact James
McGregor.
The tephigrams are prepared using the
Generic Mapping Tools (GMT) package. Comments are welcome.
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