what is the relationship between the current direction and wind direction?
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Yet people often stumble on the concept that "current direction" tells you which way the ebb or flood is going (setting). So a "North wind" is coming from the north which means the air is blowing to the south, but a current that "sets North" means the water is flowing to the north.
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Explain how the Coriolis effect, friction, and pressure gradients affect wind direction. Wind is the product of pressure gradients established between high and low pressure systems.
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A wind vane is used as part of the anemometer to determine the wind's direction. As the wind flows over the windmill, the speed and direction of the wind can be measured with this instrument. Some scientific anemometers use the speed of sound to measure the wind speed more precisely in three dimensions.
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Moving air is called wind. Air currents are winds that move in a riverlike flow in a certain direction. Thermal updrafts are gentle currents caused by warm air rising. ... Air currents are caused by the sun's uneven heating of the Earth.
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Winds are named for the direction of their origin. A NNW wind is coming from the North North West and travelling towards the opposite point on the compass, South South East.
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Click the image for larger view. Coastal currents are intricately tied to winds, waves, and land formations. Winds that blow along the shoreline—longshore winds—affect waves and, therefore, currents. Before one can understand any type of surface current, one must understand how wind and waves operate.
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wind patterns: Winds are named by the direction from which they blow. The globe is encircled by six major wind belts, three in each hemisphere. From pole to equator, they are the polar easterlies, the westerlies, and the trade winds.
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Upwind is the direction the wind is coming from. If the wind is blowing from the Northwest (blowing toward the Southeast) then the upwind direction is toward the Northwest and the downwind direction is toward the Southeast.
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The relationship between the Potential difference and Flow of current is : I=V/R. Here, I implies Current flowing, V implies Voltage and, R implies Resistance in the circuit. It means, current is directly proportional to the voltage, and inversely proportional to resistance.
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The eight half-winds are the direction points obtained by bisecting the angles between the principal winds. The half-winds are north-northeast (NNE), east-northeast (ENE), east-southeast (ESE), south-southeast (SSE), south-southwest (SSW), west-southwest (WSW), west-northwest (WNW) and north-northwest (NNW).
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Convection currents on a large scale cause global winds; convection currents on a small scale cause local winds. Earth's curved surface causes some parts of Earth to receive the Sun's rays more directly than other parts. ... Global winds push air masses around Earth and bring changes in the weather.
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Atmospheric Pressure and Winds The heating of the Earth's surface and atmosphere by the sun drives convection within the atmosphere and ocean. This convection produces winds and ocean currents. The greater the pressure differences between a low-pressure area and a high-pressure area, the stronger the winds.
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The instruments used to measure wind are known as anemometers and can record wind speed, direction and the strength of gusts. The normal unit of wind speed is the knot (nautical mile per hour = 0.51 m sec-1 = 1.15 mph).
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Water current is the continuous direct movement of water generated by forces acting upon these flows, (wind, breaking waves, temperature, Coriolis effect, etc.) ... Air currents are caused by differences in temperature, pressure, or impurity concentration.
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A windmill anemometer is a common instrument used at weather stations to obtain the wind speed. A wind vane is used as part of the anemometer to determine the wind's direction. As the wind flows over the windmill, the speed and direction of the wind can be measured with this instrument.
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Waves and surface currents are wind-generated. The atmosphere pushes the ocean surface along. But as the ocean moves, heat is redistributed and eventually tossed back into the atmosphere. The exchange of heat influences the pressure field in the atmosphere, which modifies the wind field.
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In general, hurricanes are steered by global winds. The prevailing winds that surround a hurricane, also known as the environmental wind field, are what guide a hurricane along its path. The hurricane propagates in the direction of this wind field, which also factors into the system's propagation speed.