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Researchers identify missing element in monsoon forecast model

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IndiaMonsoon

[vc_row][vc_column][vc_column_text]By Sunderarajan Padmanabhan

A group of researchers has identified a missing element that is critical in forecast of rainfall over central parts of India during summer monsoon.

In recent years, a new category of monsoon models – Coupled General Circulation Models (CGCMs) – are being increasingly used for prediction. They model oceans, atmosphere, land and sea-ice through a set of complex mathematical equations, taking into account a multitude of factors that influence the monsoon. These factors involve a variety of time scales and dynamic mechanisms from monsoon depressions to inter-annual factors like Indian Ocean Dipole and El Nino-Southern Oscillations.

One such model, Climate Forecast System, was adopted from the US National Centre for Environmental Prediction and further developed and deployed under the Indian Monsoon Mission to enhance the quality of monsoon prediction. It can simulate large scale features like sea surface temperatures, winds and rainfall and has good ability for retrospective forecasts amongst other models of similar class.

However, the model has “dry bias” with regard to rainfall over Central India, northern Bay of Bengal, and along the Western Ghats. Over these key zones of intense monsoon rainfall, the model underestimates rainfall intensity and variations. The anomaly is particularly severe over Central India. It underestimates rainfallby about 50 per cent.

Researchers from Pune-based Indian Institute of Tropical Meteorology (IITM) have now found that the problem can be tackled by including simulation of a narrow warm sea surface temperature front or gradient found in the northwest coastal region of Bay of Bengal. Simulations from a regional model indicated that the inclusion of such a front reduces the dry bias over Central India by half to about 25 per cent. This could help in getting a better picture of the rainfall and consequently help in better management of reservoirs in central India.

Speaking to India Science Wire, researchers explained that there is a gradient in the sea surface temperature in the north-west coastal region of Bay of Bengal mainly because of the rivers that flow into the Bay as also wind flow in the area. The river water has lower salt content and is less dense; it lies on top of the sea water near the coast. Normally winds help mix the river water with sea water. In this area, however, the winds are weak. Consequently, the river water layer remains stable. This, in turn, results in the formation of a temperature gradient from the coast into the sea. Studies have shown that the sea surface temperatures vary by as much as 0.5 degrees Celsius from the coastline to 100 km into the sea.

The research team included Dr. Suryachandra A.Rao, Medha Deshpande, Vishnu Thilakan, Malay Ganai, Saji N.Hameed, Dhrubajyoti Samanta and Dachao Jin. The research results have been published in journal Scientific Reports. (India Science Wire)[/vc_column_text][/vc_column][/vc_row]

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President Droupadi Murmu launches India’s first homegrown CAR T-cell therapy for cancer treatment

The gene-based therapy, which is developed by the IIT Bombay and Tata Memorial Centre, is being rolled out in India at about one-tenth of its price outside the country.

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President Droupadi Murmu on Thursday launched India’s first indigenously-developed CAR T-cell therapy, a gene-based therapy, for cancer treatment, hailing it as a breakthrough that provides new hope for humankind in the battle against the diseases.

Speaking at the launch event at the Indian Institute of Technology (IIT) Bombay, Murmu said the indigenous development of the CAR T-cell therapy was an example of the Make in India initiative.  

The gene-based therapy, which is developed by the IIT Bombay and Tata Memorial Centre, is being rolled out in India at about one-tenth of its price outside the country, as per the senior official.

In CAR T-cell therapy, a patient’s T-cells, which is a type of immune system cell or stem cell, are modified in the laboratory and inserted back into the patient to attack and destroy cancer cells after editing the stem cell.

The NexCAR19 CAR T-cell therapy, the country’s first Made in India CAR T-cell therapy, is expected to bring down the cost of treatment significantly.

During her speech, Murmu said that this therapy is considered a phenomenal advance in medical sciences. The development of this therapy is also an example of the Make in India initiative and speaks volumes about Indian scientists and physicians, she added.

The launch of India’s first gene therapy is a significant breakthrough in the battle against cancer. As this line of treatment, named CAR T-cell therapy, is accessible and affordable, it provides a new hope for the whole of humankind, President Murmu further added.

The Tata Memorial Centre director Sudeep Gupta said the CAR T-cell therapy was enormously expensive and out of the reach of an overwhelming majority of people.

Asserting that, he said NexCar19 needs to be custom manufactured for every patient under the most stringent conditions, but it has been rolled out at approximately one-tenth of the price at which it is available outside India.

The treatment costs approximately Rs 4 crore abroad against Rs 30 lakh in India, said IIT Bombay director Prof Subhasis Chaudhuri.

He further said that the low-cost CAR T-cell therapy was a huge achievement for the country and cancer patients, and places India firmly on the global map of cell and gene therapy.

Comparing the achievement of Chandrayaan-3 with CAR T-cell therapy, Chaudhuri asserted that CAR-T cell therapy heralds India’s entry into the cell and genetic engineering group.

The Tata Memorial Centre director Gupta said the treatment will help some 20,000 Indians every year, and its rollout is a milestone in the field of cancer care and genetic engineering.

He added the CAR T-cell was not only a scientific achievement of the highest order but also had immense practical application. NexCAR19 will save many, many lives and wipe many, many tears, he emphasised.

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ISRO launches weather satellite INSAT-3DS to monitor Earth’s surface, oceans  

The Naughty Boy has now become a mature, obedient and disciplined boy like PSLV, and GSLV as they have become a very robust vehicle for ISRO, said Tomy Joseph.

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The Indian Space Research Organisation (ISRO) on Saturday launched the INSAT-3DS mission from Satish Dhawan Space Centre in Sriharikota at 5:35 pm to monitor the Earth’s surface, observe the ocean and analyse the environment through various essential meteorological perspectives.

In its mission, the Geosynchronous Satellite Launch Vehicle (GSLV) aimed to deploy the INSAT-3DS meteorological satellite into the Geosynchronous Transfer Orbit (GTO). Subsequent orbit-raising maneuvers will ensure that the satellite is positioned in a Geo-stationary Orbit.

After being positioned in GSO, it will provide information on diverse atmospheric conditions via vertical profiles. INSAT-3DS will manage data collection and dissemination from Data Collection Platforms (DCPs). The satellite will help in search and rescue services.

Congratulating the team, ISRO Chairman S Somanath expressed his happiness over the successful accomplishment of the mission GSLV-F14 INSAT-3DS. He further said that the spacecraft has been injected into a very good orbit. The space agency has also noted that the vehicle has performed very well.

The INSAT-3DS Mission Director, Tomy Joseph sarcastically remarked, saying the Naughty Boy has now become a mature, obedient and disciplined boy like PSLV, and GSLV as they have become a very robust vehicle for ISRO.

The Geosynchronous Satellite Launch Vehicle (GSLV) is a launch vehicle with a length of 51.7 meters and a liftoff mass of 420 tonnes. It consists of three stages, the first stage (GS1) is made up of a solid propellant motor with 139-ton propellant and four earth-storable propellant stages (L40) strapons. Each strapon carries 40 tons of liquid propellant.

The second stage (GS2) is also an earth-storable propellant stage that carries 40-ton propellant, and the third stage (GS3) is a cryogenic stage with a 15-ton propellant loading of liquid oxygen (LOX) and liquid hydrogen (LH2).

To protect the satellite during the atmospheric regime, it is covered by an Ogive payload fairing. The GSLV is versatile and can be used to launch various spacecraft capable of performing communications, navigation, earth resource surveys, and other proprietary missions.

The launch of INSAT-3DS was a follow-on mission of Third Generation Meteorological Satellite from Geostationary Orbit. According to ISRO, the GSLV-F14/INSAT-3DS mission has been fully funded by the Ministry of Earth Sciences (MoES) and designed for enhanced meteorological observations and monitoring of land and ocean surfaces for weather forecasting and disaster warning.

The satellite will augment the Meteorological services along with the presently operational INSAT-3D and INSAT-3DR satellites.

Notably, the services will be used by various departments of the MoES such as the India Meteorology Department (IMD), National Centre for Medium-Range Weather Forecasting (NCMRWF), Indian Institute of Tropical Meteorology (IITM), National Institute of Ocean Technology (NIOT), Indian National Center for Ocean Information Services (INCOIS) and various other agencies.

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PM Modi says day not far when an Indian will land on moon in indigenously built spacecraft

PM Modi said a strong roadmap has been drawn till 2040 for the space sector. He made the announcement after flagging off the first Namo Bharat train on the 17 km stretch of the Delhi-Meerut Regional Rapid Transit system.

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PM Modi says day not far when an Indian will land on moon in indigenously built spacecraft

Prime minister Narendra Modi on Friday said the government has drawn up a roadmap for the development of space sector and the day is not far when an Indian will travel to the moon in an indigenously built spacecraft. PM Modi said India’s Gaganyaan will soon take Indian astronauts to space and the India wants to establish its own space station.

PM Modi said a strong roadmap has been drawn till 2040 for the space sector. He made the announcement after flagging off the first Namo Bharat train on the 17 km stretch of the Delhi-Meerut Regional Rapid Transit system.

PM Modi recalled the success of India’s moon mission Chandrayaan3  which had recently placed the country’s tricolour on the lunar surface. He said India of the 21st century is writing new chapters of progress and development for the landing on the moon has left the world awestruck.

PM Modi added with impeccable hosting of the G20 summit, today’s India has become the centre of attraction and curiosity for the world. He said today’s India wins more than 100 medals in the Asian Games.

PM Modi added today’s India launches 5G on its own strength and takes it to all corners of India. He further added todays India does the highest number of digital transactions. He said the Namo trains that were flagged off today were all made in India.

PM Modi set goals for the Indian Space Research Organisation (ISRO) by asking engineers and scientists to work towards setting up an Indian space staion by 2035 and sending an Indian astronaut to the lunar surface by 2040. PM Modi also asked the scientists to undertake interplanetary missions like the Venus orbiter and also attempt a landing on Mars. PM Modi further added the government has handed over festival gifts by reducing the gas cylinder price by Rs 500 for Ujjwala Yojana beneficiaries.  

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