Weather

Satellite Imagery Interpretation

Submitted by Chameleon on Thu, 12/08/2016 - 11:25

Satellite imagery is a useful source of analysis for the oceanic regions in the southern hemisphere, particularly in data sparse areas. The following is a compilation from various sources to help the beginning user interpret images from polar orbiting satellites. This guide is not all encompassing but should provide enough information of the basics to enhance the interpretation. An attempt will be made to recognize surface flow, cloud patterns and for locating 1000-500 mb troughs and ridges.

Gribs - Getting the most out of them

Submitted by Chameleon on Sat, 07/18/2015 - 15:23

Actually this is from Serge Robitaille, SV Spirare!

Summary

How to order the Saildocs GFS gribs to get the most from them. This includes, surface pressure and winds, rain and swell, as well as 500HPa contours. Serge on SV Spirare has skilfully put all this together and has made the 'gribs' really sing! Note that for those east of Vanuatu this is your only source of upper level data.

If you are familiar with ordering gribs skip to the numbered instructions below. Otherwise read on.

Wx Fax products

Submitted by Chameleon on Thu, 04/10/2014 - 15:25

This is the list of wx fax products that SV Chameleon used when on passage and in the Islands. It includes NZ, Australia and Hawaii products.

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