AgronomyHorticultureBotanySoil SciencePlant PathologyEntomologyExtentionAgril. EngineeringDairy ScienceEconomics
» Water Management Including Micro Irrigation
» Principles of Agronomy
» Agricultural Meteorology
» Rainfed Agriculture
» Farming Systems & Sustainable Agriculture
» Practicals on Weed Managemet
» Crop Production - Rabi Season
» Weed Management
agriculture information

Current Category » Agricultural Meteorology

Untitled Document

Factors Affecting The Air Temperature

The distribution of temperature over the earth surface depends on following factors:
1. Latitude:
Highest temperatures are generally at the equator and the lowest at the poles. The temperature decreases with the increase of latitude.

2. Altitude:
Temperature decreases with height in troposphere.

3. Season:
Coldest temperatures are in winter and highest temperatures are in summer seasons.

4. Distribution of land and water:
Water bodies are great moderators of temperature. Because of high Specific heat of water, so on the oceans, the regularity in temperature is more as compared to continents.

5. Topogrtaphy:
Mountain ranges affect the temperature by acting as obstacles to the Flow of cold air cold air near the surface and they often set conditions of warm winds.

6. Ocean currents:
 Hot and cold ocean currents affect temperature e.g.  Gulag Stream (Warm) in North Atlantic, Benguela current (cold) along West coast of South Africa, Peru Current (cold) along West Coast of South America.

7. Winds:
Various types of wind affect temperature.

8. Clouds and rains:
Clouds by obstructing the heat from the Sun and rains by cooling the Atmosphere, affect the temperature.

9. Color of the soil:
Black color of soils absorbs more radiations and other types reflect them.

10. Slope of the soil:
Black color of soils absorbs more radiations and other types reflect them.

11. Forest and vegetation:
Due to Evapotranspiration and interception of sun – rays, temperatures are moderated.

Current Category » Agricultural Meteorology