Day and Night Microphysics

Indian Meteorological Department (IMD) has been issuing alerts with maps from various weather monitoring satellites.

Day and Night Microphysics RGB Imager

It is image created by combination of Red, Green and Blue colours.
Aim – To study various atmospheric characteristics.
Radiometer – A device that measures the properties of radiation by studying the radiation’s interaction with matter.
Atmospheric sounders – A devices that measure temperature, humidity and study water vapour as a function of their heights from the ground.
Factors determining RGB imager – Solar reflectance and brightness temperature.
Applications - It helps in analysis of different cloud types, initial stages of convection, maturing stages of a thunderstorm, identification of snow area, and the detection of fires.
It also helps in tracking the formation, evolution and depletion of cyclones and other weather events.

Solar reflectance is a ratio of the amount of solar energy reflected by a surface and the amount of solar energy incident on it.

Brightness temperature is the relationship between the temperature of an object and the corresponding brightness of its surface.

Daytime Microphysics (DtMicro) RGB – It is the data formed by combining information about the cloud brightness, cloud particle phase and size, and cloud top temperature.
Aim – To distinguish ice from water phase and to monitor the development of convection, fog and low clouds.

Solar Reflectance Recorded by INSAT 3D
Wavelength	Colour beam	Relates to
0.5 µm (visible radiation)	Red colour	Cloud thickness and amount of cloud water and ice
1.6 µm (shortwave IR radiation)	Green colour	Cloud particle size and phase
10.8 µm (thermal IR radiation)	Blue colour	Temperature

Observations – Water cloud is more reflective than ice cloud and have a stronger red beam, smaller water or ice particles have a higher reflectivity, resulting in a stronger green beam and warm surface corresponds to strong blue beam component.
Night microphysics – It is designed for monitoring the evolution of night time fog and stratus clouds.

Colour band	Determining factors
Red	Difference between 2 Thermal IR
Green	Difference between Thermal IR and a middle IR
Blue	Strength of 1 Thermal IR signal

Observations – A strong red beam for thick clouds, strong green beam for water clouds with small droplets and a strong blue beam for warm surfaces.

The Kalpana 1 and INSATs 3A, 3D, and 3DR satellites have bolstered India’s weather monitoring and warning services.

Source:

Join Our Telegram

Minimum Support Price (MSP)

Prehistoric Rock Paintings in Tamil Nadu

Geopolitical Significance of Ports

20 Dec, 24
SHARE

Geopolitical Significance of Ports (IR) Act as geopolitical assets: Ports enhance the projection of strategic reach, which helps strengthen the country’s control over important sea and energy supply routes. E.g. Indian Navy’s staging base at Agalega Islands will enable marine patrols

SPACE VEHICLE - PSLV & GSLV - Space ORBITS

20 Dec, 24
SHARE

SPACE VEHICLE - PSLV & GSLV - Space ORBITS (S&T) GS PAPER-3 India has one of the world's most effective and active space programmes, with a diverse set of missions and accomplishments in the space sector. The Indian Space Research Organisation (ISRO) is India's primary space agency located in Bangalore. It has made sign

Pradhan Mantri Suryodaya Yojana

06 Feb, 24
SHARE

Recently, Prime Minister announced Pradhan Mantri Suryodaya Yojana under which 1 crore households will get rooftop solar power systems. India’s Status of Current Solar Capacity India currently stands at 4th place globally in solar power capacity. As per Ministry of New an

Foreign Contribution Regulation Act (FCRA)- NGO

06 Feb, 24
SHARE

The Foreign Contribution Regulation Act, 2010 (FCRA) registration of two prominent non-governmental organisations (NGOs) — Centre for Policy Research (CPR) and World Vision India (WVI) have been cancelled this month. What is FCRA? Key provisions of FCRA, 2010 Key aspects Description

Voice clone-AI

06 Feb, 24
SHARE

Voice clone fraud has been on the rise in India. AI voice cloning – It is the process of creating a synthetic replica of a person’s voice through machine learning and speech synthesis technology.It is called as voice deepfakesor audio deepfakes. Objective – To achieve a high level of na