A weather station is a facility intended to regularly measure and record various meteorological variables. These data are used both for making weather forecasts from numerical models to climate studies. Of particular interest is access to information supplied to us by official bodies. This is an interesting link. From this option, you can view data collected by the stations Agroclimatic spread over different provinces of the State.
INSTRUMENTAL WEATHER STATION
Then we will explain the requirements generally must have a weather station instruments. If you do not have a station or instrumental contained therein do not worry, we are also going to comment you how you can do it. Normalization of instrumental
is a very important issue as to measure the same variable weather can be found on the market different types of instruments may differ in their time constants and its accuracy.
The instrumentation of the stations must be approved and normalized by the Meteorological Services and, generally, are those entities that provide the instruments of observation, thus ensuring uniformity.
regular stations in our country (Spain) are equipped with the following material: Rain gauge
Hellman to 1.50 m above ground weather Garita
Stephenson to 1.50 m above the ground in natural terrain
Thermometer Thermometer
maximum and minimum.
Thermometers should at least appreciate fluctuations of 0.5 ° C at 1 ยบ C in 0.5 minutes and have an accuracy of ± 0.2 ° C. Rainfall is measured with an accuracy ± 0.1 mm.
Thermometer and gated
thermometers to measure air temperature properly must be installed inside the booth weather, formed with blinds let through the air and to preserve the thermometers of the effect of solar radiation, both directly, as reflected by the ground. The front should be facing north so that when you open the door between the sun, the bottom will be 1.50 m above the ground. The standard booth is used in our country is the checkpoint Stephenson. Rain gauge
in Spain since 1911 was adopted for measuring precipitation Hellmann rain gauge a hollow cylinder placed vertically in the bottom ends funnel-shaped. The mouth is 200 cm2 and to ensure the consistency of the surface of it, carries with it a brass ring bevelled to prevent further spills. Through the mouth, situated at a height of 1.5 m. received precipitation that passes through the funnel to a collection container where the rainfall totals. The collected water is passed to a graduated in millimeters and tenths of a millimeter. Garita
Build a checkpoint to ensure that the outlet temperature measurement is correct according to the scheme we present below. The equipment needed is as follows:
1 plate 50 x 50 cm and 2 mm thick.
1 sheet 50 x 60 cm and 2 mm thick.
2 hinges.
1 stand of 150 cm. Hollow aluminum can be 10 cm by 10 cm or wood approximately
1 thermometer that attaches to the plate with a spike so that it hung slightly away from the plate
2 pieces of about 25 cm
plates shall be painted white and preferably be made of wood but you can also use white plastic.
With the plate 50 by 50 centimeters build vertical rear wall of the booth incorporating a rod in each of the bottom corners. Then the plate is fixed to the support by means of screws.
The second plate 50cm wide by 60cm long, will be the front. Be fixed at the top of the vertical plate is fixed to the bracket with two hinges, so that the front can be opened, and rest on the two rods subject at the ends of the vertical plate. The hut has no bottom to allow air circulation.
The thermometer hangs inside the booth, do not touch the plate, must be outside. Finally, the checkpoint
must be facing north so that the thermometer does not give you the sun and is always in the shade. To make reading
simply lift the anterior plate and watch the display of the thermometer. Rain gauge
Take a funnel which can be plastic or other material circular mouth and fifteen to twenty centimeters in diameter, and a tall narrow beaker and place them in the manner indicated on the care that the mouth of the funnel is horizontal at a height above the ground five feet. LOCATION
WEATHER STATION As in the previous section we will provide you with general information about the location of a weather station and shall apply to instruments you have available.
The choice of station sites, so they can be considered representative data is critical, given that values \u200b\u200btaking influences meteorological variables, in addition to latitude and altitude, distance to the sea, topography, proximity to large bodies of water, terrain, vegetation, barriers or curtains of trees, buildings etc.
The station should be set regardless of being in the lower valley, on a hilltop or in an area of \u200b\u200bsteep slope in a clearing. A grass a garden or a large patio can be a good area, where trees, walls, or buildings near the station are far from it at least a distance equal to the height of obstacles. Should not put the station completely cleared fields or terraces or roofs, as these sites are exposed to strong gusts of wind, that produce swirling air and thus alters the extent of the rain.
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