Agro-meteorology 2 Flashcards
A process where precipitation is encouraged by injecting artificial condensation nuclei through aircrafts or other suitable mechanisms to induce rain from rain bearing clouds
Seeding of Cloud
Types of Cloud Seeding?
Dry Seeding - silver iodide method
Warm Seeding - Common Salt and Water Drop Technique
Minute crystals of a chemical produced in the form of smoke act as efficient ice-forming nuclei at temperatures below -5 degrees to induce rain
Dry Seeding of Silver iodide
What is long period average?
Average rainfall between 1971-2020
87cm
What is considered normal rainfall wrt LPA?
90%-110% of LPA
What is considered excess rainfall wrt LPA?
More than 110% of LPA
When can we say that rainfall is deficient?
Less than 90% of LPA
An event is considered a cloud burst when a station receives ___cm of rainfall in ___
10cm in 1 hour
Locust Warning Organisation (LWO) India
Faridabad
Instrument that measures wind speed/velocity?
Anemometer
Instrument that measures:
a> Sunshine duration
b> Relative Humidity
c> Relative Density of liquid
a> Cambel Stokes Recorder
b> Hygrometer/Psychrometer
c> Hydrometer
The temp at which a body of air must be cooled to become saturated with water vapour
Dew Point
Stratophere extends to an altitude of about ____km
50-55 km
Stratophere is also known as?
Ozonosphere
Temp in stratosphere ____ with increase in altitude
decrease
____ are dark clouds as they carry a substantial quantity of water droplets. They come in union with other cloud forms that bring substantial precipitation.
Nimbus
Coldest region of the atmosphere is?
Mesophere
-95C at 80km
IMD is located in? It is under which ministry?
Delhi
Ministry of Earth Sciences
____% solar radiation reaches the earth’s surface after reflection, scattering and adsorption
50%
Which part of stratosphere contains max ozone?
Upper Stratosphere
Where was 1st recorded instance of cloud seeding in India?
Maharashtra
Occurred in 2003, in project called ‘Megha Sandesh’
The practice of actively monitoring, forecasting & taking proactive measures to mitigate potential negative impact of weather.
Weather Management
One of the aims of Mission Mausam
Implementation year of Mission Mausam?
2024-26
Allocation for Mission Mausam?
Rs. 2000 crore for 2 yrs
Mission Mausam aims to enhance India’s weather & climate forecasting?
2026
How many components does Mission Mausam have? what are they?
3 components:
1. Next generation radar and satellite systems
2. Developmnt of enhanced earth system models
3. GIS based DSS
Decision Support System
IMD aims for 0 error forecasting by? International IMD HQ?
2047
Geneva
Acc to IMD by 2047, Severe weather will be detected 100% at the village and household level through?
improved radars
satellites &
remote-sensing
