Question

Explain why the climate in much of the world is different in January than it is in July.

Answer 1

Answer-

According to the given question-

• The difference in climate is due to amount of radiation form sun received by Earth are different around the world. Equator receives more heat than the North Pole as well as south poles due to angle of ray falling on earth.
• Seasons are due to due to revolution of earth on its axis around the sun and tilt of earth responsible for difference in amount of sunlight that are striking on earth and the duration of sun light falling on latitude.
• Change in climate in January and July around the world depends on -
  • water and land distribution in particular continent
  • Latitude
  • Elevation from sea level
  • Ocean currents.
• Temperature of air decreases with height so the regions which are at high elevation are cooler than the regions which are present near the sea level.
• Temperature decreases from pole to tropic as well as subtropics in January and July but the difference in solar radiation which occurs at high and low latitudes is more in January compared to July or more in winter than the summer.
• The isotherm, which is measure of temperature and places have same temperature are close than the isotherm of July. Which means isotherms is not occur horizontally rather than it bend at the boundary of ocean and continent .
• January temperatures in middle of continents are lower than the same latitude region present near the ocean and this condition reversed during July.
• This is due to uneven heating and cooling of land and water bodies. because the land containing thin layer of soil absorb less solar energy than the water. sun light penetrates in water at very deep and circulation of water causes distribution of heat.
• Ocean current in eastern continents responsible for transportation of warm water towards pole while in western continents they are responsible for transportation of cold current towards equator.