Weather data & where it all began in NZ

[Te Puke Weather]

Weather records began two centuries ago in this country and official arrangements for a weather service were made way back in 1861.
The government established a network of nine reporting stations extending from the Bay of Islands to Dunedin. After a patchy start, services proved to be far from adequate. This, together with concern over the number of ships wrecked during storms along the coast in the mid-1870s, eventually led to action by the Marine Department.

Having earlier established an experimental storm warning scheme, in January 1874 the Marine Department appointed Commander Robert Edwin as New Zealand’s first official weather forecaster. Within two years the weather reporting section was functioning along lines developed by Robert FitzRoy (a former governor of New Zealand and commander of the Beagle) in his influential Weather book (1863), published in England.

Printed forecasts

Newspapers began printing weather maps at the end of 1882. These were based on the reports of about 24 observation stations. Robert Edwin sent daily reports to the major papers, along with code numbers that corresponded to one of the 24 isobaric (air pressure) patterns commonly occurring over New Zealand. The number indicated which map to print.

Technological developments

After the First World War, advances in radio technology meant that weather reports could be received from ships at sea. Soon after, a group of Norwegian meteorologists researching mid-latitude cyclones introduced the idea of fronts (where two different air masses meet). New Zealand’s meteorological service soon used this research in their forecasts.

When regular air services began in New Zealand in 1935, the number of reporting stations and the frequency of reports greatly increased. Some stations began to take measurements in the upper atmosphere using weather balloons tracked by theodolite. In 1942, radiosondes were also introduced – attached to balloons, these transmitted pressure, temperature and humidity readings.

Today, most weather stations are automated across the country and many private weather stations have popped up and are available for easy access online.

WeatherWatch.co.nz and Teara

www.weatherwatch.co.nz

http://www.weatherwatch.co.nz/content/weather-data-where-it-all-began-nz

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