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The Todd Weather Folios are a collection of continental Australian synoptic charts that were published from 1879 to 1909. The charts were created by Sir Charles Todd's office at the Adelaide Observatory. In addition to the charts, the folios include clippings of newspaper articles and telegraphic and handwritten information about the weather.
In meteorology, the synoptic scale (also called the large scale or cyclonic scale) is a horizontal length scale of the order of 1,000 km (620 mi) or more. [1] This corresponds to a horizontal scale typical of mid-latitude depressions (e.g. extratropical cyclones ).
An automated prognostic chart of the 96-hour forecast of 850 mbar geopotential height and temperature from the Global Forecast System. Atmospheric models are computer programs that produce meteorological information, including prognostic charts, for future times at given locations and altitudes. [10]
A weather map, also known as synoptic weather chart, displays various meteorological features across a particular area at a particular point in time and has various symbols which all have specific meanings. [1] Such maps have been in use since the mid-19th century and are used for research and weather forecasting purposes.
A value of 702.0 mm Hg at Bergen Lungegård Hospital on January 27, 1884 (935.8 hPa) is also reported, [98] [99] which is likely to be from the same low as the UK record from Ochtertyre the previous day. Other sources give a pressure value of 939.8 hPa or 939.7 hPa in Bergen on 27 January 1884.
From October 18, and through the following day, Wilma underwent explosive deepening over the open waters of the Caribbean; in a 30-hour period, the system's central atmospheric pressure dropped from 982 millibars (29.0 inHg) to the record-low value of 882 millibars (26.0 inHg), while the winds increased to 185 mph (298 km/h).
ASOS sensors, located at Salinas, California. Surface weather observations have traditionally been taken at airports due to safety concerns during takeoffs and landings. The ICAO defines the International Standard Atmosphere (also known as ICAO Standard Atmosphere), which is the model of the standard variation of pressure, temperature, density, and viscosity with elevation/altitude in the ...
There are some symbols in Unicode which resemble those used for oktas. However, some okta symbols lack a similar-looking Unicode character. The use of Unicode to render oktas depends on whether a font with these characters is installed; Unicode symbols may be difficult to work with in software that does not render these characters uniformly.