Rainfall

Pre Monsoon 2023: District Wise Rainfall in India

In the just concluded three month pre monsoon season (March 1 to May 31, 2023) India received 146.6 mm rainfall, 12% above the normal rainfall of 130.6 mm as per the India Meteorological Department (IMD). In 2020[i] , 2021[ii] and 2022[iii] India received 158.5 mm, 155.2 mm and 130.6 or 20% above normal, 18% above normal and 1% below rainfall respectively. So this year, India has received much higher pre monsoon season rainfall in 2023 compared to that in 2022, but lower than that in 2021 and 2020.

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DRP News Bulletin

DRP NB 080523: Pune citizens Oppose River Front Development Project

(Feature Image: On April 29, thousands of Pune citizens join Chipko Andolan against the planned cutting of over 7,000 trees for the Mula Mutha Riverfront Development (RFD) project. Image Credit: Rahul Deshmukh, Source: Pune Mirror.)

It is heartening to see thousands of Pune citizens out on the streets over the last two weeks protesting against felling of thousands of trees for the destructive Mula Mutha River Front Development Project. The project will destroy the best biodiversity habitat along the rivers in Pune, fell thousands of trees, encroach on riverbeds and floodplains, destroy bird migration corridor, and create fresh flood hazards for the city, which will further worsen in changing climate.

We hope this protests continue and intensify till the Pune Municipal Corporation and the Maharashtra government wakes up and scraps the project and instead, uses the scarce available resources for protecting and rejuvenating the water bodies and biodiversity in Pune in collaboration with the people of Pune.

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DRP News Bulletin

DRP NB 240423: The world is moving away from Big Dams: Are we?

(Feature Image: Construction works going on at Polavaram Dam site. Source: The Hans Media, May 2021)

This well substantiated report from Yale School of Environment this week shows that the end of the big dam era is approaching. The well argued report from Jacques Leslie uses the reports from UN University, International Renewable Energy Agency, Oxford University, Inclusive Development International, China, among others to show how the pace of construction of dams and hydropower projects and also pace of financing such projects have hugely reduced in recent years and decades.

Even the International Hydropower Association, sensing the change, is now advocating pump storage hydro rather than conventional hydro and that too off stream version, to complement the power from solar and wind. Emerging economics with rising cost of hydropower projects and rising cost of power from such projects compared to solar, wind (onshore and offshore) are a major reason for the massively slowing pace of new hydropower projects.

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DRP News Bulletin

DRP NB 170423:Forecast of Indian SW Monsoon & definition of normal monsoon

The India Meteorological Department (IMD) has on April 11, 2023 forecast that rainfall at national level in four months of June-Sept 2023 Southwest Monsoon will be 96% of Long Period Average (LPA). IMD considers Indian Monsoon rainfall as normal based on just one parameter of total rainfall in these four months at national level is between 96% and 104% of LPA, with model error of +/- 5%. This raises large number of questions as media has rightly raised post the IMD announcement.

Firstly, in a strange turn of events, on April 12, an update jointly by US weather agencies under the National Oceanic & Atmospheric Administration (NOAA), contradicted a number of assumptions of IMD the previous day, including the period when El Nino will become active and probability of it being a strong event, both of which have a strong bearing on the Indian Monsoon in an adverse way. So the first question that arises is, did the IMD not have the benefit of the observations on April 11 based on which NOAA made the forecast very next day? Or was it an attempt at providing an unjustified feel good monsoon forecast? This question arises as in the past too questions have been raised about such attempts by IMD. This question also becomes important as only a day or two before IMD’s forecast, private forecaster had predicted that monsoon rainfall is likely to be deficient and not normal.

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DRP News Bulletin

DRP NB 160123: Top Court appeals for EIAs for Urban Development: Welcome, but…

The Supreme Court of India, while disposing of a petition related Chandigarh, in its order on January 10, 2023 has said: “Before we part with this judgement, we observe that it is high time that the legislature, executive, and the policymakers at the centre and state levels take note of the damages to the environment on account of haphazard development and take a call to take necessary measures to ensure that the development does not damage the environment… We therefore appeal to the Legislature, the Executive and the Policy Makers at the Centre as well as at the State levels to make necessary provisions for carrying out Environmental Impact Assessment studies before permitting urban development.”

This is most welcome. And urgently required. That India’s urban development is happening at the cost of life sustaining environment resources including rivers, water bodies, forests, wetlands among others is well known. That the government sees all requirements of environmental scrutiny as road blocks is also well known. The consequences of this are clear for all concerned, not only in case of Bangalore as cited by the Supreme Court Bench, but also in case of Ahmedabad, Bhopal, Chennai, Delhi, Ernakulam, Faridabad, Gurugram, Hyderabad, Indore, Joshimath, Kolkata, Lucknow, Mumbai and so on. So is there a good chance that the apex court suggestion will be followed either in letter or in spirit? Unlikely. So what is clearly required is that the apex court emphatically directs the centre and states in this regard and follows it up with ensuring its implementation.

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Cloud Burst

J&K & Ladakh Cloud Bursts 2022: Missing Monitoring & Mitigation

(Feature Image: Cloudburst triggers flashfloods; 13 structures washed away, 20 damaged in Doda. Photo PTI/The Telegraph, 20.07.2022)

Tracking cloud burst incidents occurring before and during South West Monsoon season 2022 in North West Himalayan region, this report covers the Union Territories of Jammu & Kashmir (J&K) and Ladakh. Kindly see the links for SANDRP’s reports covering the Uttarakhand (31 cloud burst incidents) and Himachal Pradesh (39 cloud burst incidents) in 2022. Our previous reports for J&K and Ladakh region can be seen here 2021, 2020, 2019.

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Monsoon · Rainfall

High Rainfall days in India’s districts in SW Monsoon 2022

An analysis of the daily district wise rainfall data from India Meteorological Department (IMD) for India’s South West Monsoon 2022 shows that there were 2079 instances when a district rainfall of a day was above 50 mm. Such high rainfall instances included 1712 instances when rainfall was 50-100 mm, 288 instances when it was 100-150 mm, 53 times it was 150-200 mm and 26 times above 200 mm. Out of 694 districts of India, 527 districts or, about 76% of the districts experienced such high rainfall days during SW monsoon 2021.

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DRP News Bulletin

DRP NB 10×22: All Pervasiveness of Climate Change and Anthropocene Impacts

(Feature Image:- Odisha: 10 stranded in flash flood after sudden release of water from Gohira dam. Source: TNIE )

A large number of reports in this week’s news bulletin from SANDRP are tied by a common threat. The report in NYT about how the South Asian Monsoon is becoming more intense. How the droughts like the one in western US are becoming more likely.

In Bengal people killed in October rains while they were doing visarjan of Durga idols and in Odisha people stuck by sudden release of water from a dam. In these cases of W Bengal and Odisha, strangely, there was no warning and no one is even asking why. In both cases it is the destruction of the river in the that led to create the crisis, but again no questions are being asked.

The report of death by avalanches, the more frequent landslides in monsoons are also in the same league. The SW Monsoon is officially over as per India Meteorological Department, but even as we write, the extreme floods in Uttarakhand, Uttar Pradesh and Madhya Pradesh are breaching the Highest Flood Levels in several rivers.

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Monsoon · Rainfall

High Rainfall days in India’s districts in Sept 2022

An analysis of the daily district wise rainfall data from India Meteorological Department (IMD) for the month of September 2022, the last month of India’s South West Monsoon 2021 shows that there were 417 (489 in Sept 2021[i]) instances when district rainfall of a day was above 50 mm. Such high rainfall instances included 365 (374 in Sept 2021) instances when rainfall was 50-100 mm, 47 (84 in Sept 2021) instances when it was 100-150 mm, 3 (20 in Sept 2021) times it was 150-200 mm and twice (eleven in Sept 2021) times above 200 mm.

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Monsoon · Rainfall

SW Monsoon 2022: District wise rainfall in India

In the just concluded South West Monsoon 2022, India received 925 mm rainfall, about 106.5% of the Normal SW Monsoon rainfall of 868.6 mm or 6.5% more than the normal SW Monsoon rainfall as per India Meteorological department. This rainfall will now be categorised as normal rainfall though the distribution has been far from normal, both temporally and spatially. The monsoon withdrawal[i], however is yet to happen from most of India, except a small part in North West India including parts of Rajasthan and Haryana. IMD has predicted that the withdrawal of monsoon will not be completed till at least Oct 15 as due to a fresh cyclonic activity in Bay of Bengal, rainfall over MP and UP is likely to continue in first week fo Oct 2022.

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