A weather map shows a shallow, stationary depression centred over a point on the Earth's surface at latitude 50° N. The isobars corresponding to pressures of 998, 1000 and 1002 mbar are concentric circles of radius 50, 200 and 350 km respectively. Estimate the wind speed on the 1000 mbar isobar, neglecting the effects of friction between air and ground. You may assume that the wind direction follows the isobars (i.e. rotating anti-clockwise in circles around the depression as viewed from above). I [1mbar = 100 Pa; you can take the density of air to be 1.2 kg m-3.]

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A weather map shows a shallow, stationary depression centred over a point on the Earth's
surface at latitude 50° N. The isobars corresponding to pressures of 998, 1000 and 1002 mbar
are concentric circles of radius 50, 200 and 350 km respectively. Estimate the wind speed on the
1000 mbar isobar, neglecting the effects of friction between air and ground. You may assume
that the wind direction follows the isobars (i.e. rotating anti-clockwise in circles around the
depression as viewed from above).
I
[1mbar 100 Pa; you can take the density of air to be. 1.2 kg m-3.1
Transcribed Image Text:A weather map shows a shallow, stationary depression centred over a point on the Earth's surface at latitude 50° N. The isobars corresponding to pressures of 998, 1000 and 1002 mbar are concentric circles of radius 50, 200 and 350 km respectively. Estimate the wind speed on the 1000 mbar isobar, neglecting the effects of friction between air and ground. You may assume that the wind direction follows the isobars (i.e. rotating anti-clockwise in circles around the depression as viewed from above). I [1mbar 100 Pa; you can take the density of air to be. 1.2 kg m-3.1
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