Introductory Agrometeorology & Climate Change 2(1+1)
Contents
Theory
- Meaning and scope of agricultural meteorology
- Earth atmosphere - its composition, extent and structure
- Atmospheric weather variables
- Atmospheric pressure, its variation with height
- Wind, types of wind, daily and seasonal variation of wind speed,
- Cyclone, anticyclone, land breeze and sea breeze
- Nature and properties of solar radiation
- Solar constant, depletion of solar radiation
- Short wave, longwave and thermal radiation
- Net radiation
- Albedo
- Atmospheric temperature,
- Temperature inversion, lapse rate, daily and seasonal variations of temperature, vertical profile of temperature,
- Energy balance of earth.
- Atmospheric humidity,
- Concept of saturation, vapor pressure,
- Process of condensation,
- formation of dew, fog, mist, frost, cloud
- Precipitation, process of precipitation, types of precipitation such as rain, snow, sleet, and hail, cloud formation and classification
- Artificial rainmaking.
- Monsoon- mechanism and importance in Indian agriculture,
- Weather hazards - drought, floods, frost, tropical cyclones and extreme weather conditions such as heat-wave and cold-wave.
- Agriculture and weather relations
- Modifications of crop microclimate, climatic normals for crop and livestock production.
- Weather forecasting - types of weather forecast and their uses.
- Climate change
- Climatic variability
- Global warming
- Causes of climate change and its impact on regional and national Agriculture.
Practical
- Visit of Agrometeorological Observatory
- site selection of observatory
- exposure of instruments and weather data recording
- Measurement of total, shortwave and longwave radiation, and its estimation using Planck’s intensity law.
- Measurement of albedo and sunshine duration, computation of Radiation Intensity using BSS.
- Measurement of maximum and minimum air temperatures, its tabulation, trend and variation analysis.
- Measurement of soil temperature and computation of soil heat flux.
- Determination of vapor pressure and relative humidity.
- Determination of dew point temperature.
- Measurement of atmospheric pressure and analysis of atmospheric conditions.
- Measurement of wind speed and wind direction, preparation of windrose.
- Measurement, tabulation and analysis of rain.
- Measurement of open pan evaporation and evapotranspiration.
- Computation of PET and AET.
