What do you understand by the term weather? mention and elaborate four elements of weather?

The weather represents the state of the atmosphere in a certain place, at a certain moment. Usually, the weather is defined by evoking the most obvious characteristic of the atmosphere, so that it can be warm weather, cold or frosty weather, clear weather.

The characteristics that define the weather are the meteorological elements. These are:

air temperature (expressed in degrees Celsius or Fahrenheit) air pressure (expressed in millimeters mercury column) wind direction and speed (wind direction is indicated by the cardinal or intercardinal point from which the wind blows, and the speed is expressed in m/s or km/h) nebulosity (the degree of coverage of the celestial vault with clouds, expressed in tenths of the visible celestial vault) the amount of precipitation represents the thickness of the water layer that would form if it stagnated on the earth's surface and is expressed in liters / m² or mm

Water flows along the east coast and across the western tropical pacific towards south america, while they both are directed towards that way,  el niño does not directly affect the southern flow of water along the coast.