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Onward and spillward

By: VM
28 January 2025 at 15:57
Onward and spillward

‘The Lunacy Of Rebuilding In Disaster-Prone Areas’, Noema, April 25, 2024:

In the months after Hurricane Katrina, New Orleans proposed a flood control program unlike any other in U.S. history. Developed by the Bring New Orleans Back Commission, a diverse group of stakeholders appointed by the mayor, the resulting plan called for large parts of the city to be converted from longstanding residential zones to floodable parks. Released to the public in the form of a map, large green circles were positioned over neighborhoods where owners would be forced into buyouts. These were some of the most historic districts in a very historic city … and almost exclusively in majority Black and marginalized neighborhoods.

Christened in the press as the “Green Dot” map, the proposal ranks among the most profoundly unsuccessful plans ever issued by a municipal body and would never be put to a vote in the city council. … The Green Dot map’s remarkably brief tenure can be attributed in part to its proponents’ failure to adhere to the most basic rule of community planning: Never designate the where before building support for the what.

“Building support”. What a quaint idea. Everyone should be doing it the way India’s doing it: don’t ask anyone. That way “building support” is redundant and “where” starts to really mean “anywhere”.

‘Expert committee clears plan to rebuild washed-out Teesta dam in Sikkim’, The Hindu, January 28, 2025:

Fourteen months after a devastating glacier lake outburst flood in Sikkim washed away the Teesta-3 dam – the state’s biggest hydropower project – and killing at least 100, an expert committee of the environment ministry has recommended that the dam be reconstructed.

Instead of the older structure that was part rock and part concrete, the new dam will be entirely concrete – reportedly to increase its strength – and its spillway will be capable of managing a peak flow of 19,946 cubic metres a second (cumecs), thrice the capacity of the former dam, which was 7000 cumecs.

Sounds reasonable, right?

The new design incorporates a “worst-case scenario” – meaning the maximum possible rain in the upstream glacier lake, modelled by the India Meteorological Department, in the South Lhonak region over the next 100 years influencing further downstream modifications.

Now all we have to do is wait for the flood that will show up the IMD’s model — a fate models have often had to contend with this century, especially when dealing with rainfall.

‘The value of attributing extreme events to climate change’, The Hindu, May 24, 2024:

It is worth understanding how these ‘rapid extreme event attributions’ are performed. The most important concept is the change in probability: in this case, climate scientists contrasted the conditions in which the heatwaves occurred against a counterfactual world in which climate change did not happen. The conditions that prevail in the counterfactual world depend on the availability of data from our world. When there isn’t enough data, the researchers run models for the planet’s climate without increasing greenhouse gas emissions and other anthropogenic forcing. Where there is sufficient data, they use trends in the data to compare conditions today with a period from the past in which human effects on the planet were relatively minimal.

[But] the data are hardly ever sufficient, especially for rainfall, and almost never for extreme rainfall events. Climate models are also notoriously bad at properly capturing normal rainfall and worse at extreme ones.

Thus, the environment ministry keeps the gates open to a new dam with a 59,838-cumec spillway in future.

Tamil Nadu’s lukewarm heatwave policy

By: VM
21 November 2024 at 05:56

From ‘Tamil Nadu heatwave policy is only a start’, The Hindu, November 21, 2024:

Estimates of a heatwave’s deadliness are typically based on the extent to which the ambient temperature deviates from the historical average at a specific location and the number of lives lost during and because of the heatwave. This is a tricky, even devious, combination as illustrated by the accompanying rider: “to the reasonable exclusion of other causes of hyperthermia”.

A heatwave injures and/or kills by first pushing more vulnerable people over the edge; the less vulnerable are further down the line. The new policy is presumably designed to help the State catch those whose risk exposure the State has not been able to mitigate in time. However, the goal should be to altogether reduce the number of people requiring such catching. The policy lacks the instruments to guide the State toward this outcome.

The cost of forgetting Ballia

By: VM
1 June 2024 at 17:37

In the day or so before June 1, 14 people died in Bihar of heat stroke. Ten of these people were election personnel deployed to oversee voting and associated activities in Bihar and Uttar Pradesh, and of them, five died in Bhojpur alone. On Friday, at least 17 people in Uttar Pradesh, 14 in Bihar, and four in Jharkhand had died of heat-related morbidity. And of the 17 in Uttar Pradesh, 13 deaths were reported from Mirzapur alone. This is a toll rendered all the more terrible by two other issues.

First, after the first phase of the polls, the Election Commission of India (ECI) recorded lower voter turnout than expected (from previous Lok Sabha polls) and blamed the heat. Srinivasan Ramani, my colleague at The Hindu, subsequently found “little correlation” between the maximum temperature recorded and turnouts in various constituencies, and in fact an anti-correlation in some places. By this time the ECI had said it would institute a raft of measures to incentivise voters to turn up. These were certainly welcome irrespective of there being a relationship between turnout and heat. However, did it put in place similar ‘special’ measures for electoral officials?

On March 16, the ECI forwarded an advisory that included guidelines by the National Disaster Management Authority to manage heat to the chief electoral officers of all states and Union territories. These guidelines had the following recommendations, among others: “avoid going out in the sun, especially between 12.00 noon and 3.00 pm”; “wear lightweight, light-coloured, loose, and porous cotton clothes. Use protective goggles, umbrella/hat, shoes or chappals while going out in sun”; and “avoid strenuous activities when Balliathe outside temperature is high”.

A question automatically arises: if poll officers are expected to avoid such activities, the polling process should have been set up such that those incidents requiring such activities wouldn’t arise in the first place. So were they? Because it’s just poka-yoke: if the process itself didn’t change, expecting poll officers to “avoid going out in the sun … between 12 pm and 3 pm” would have been almost laughable.

The second issue is worse. Heat wave deaths in India are often the product of little to no advance planning, even if the India Meteorological Department (IMD) has forecast excessive heat on certain dates. But to make matters worse, there was a deadly heat wave last year in the same region where many of these deaths have been reported now.

Recall that in the first half of June 2023, more than 30 people died of heat-related illnesses in Ballia village in Uttar Pradesh. After the chief medical superintendent of the local district hospital told mediapersons the people had indeed died of excessive heat, the state health department — led by deputy chief minister Brajesh Pathak — transferred him away, and his successors later denied heat had had anything to do with the deaths.

So even if the IMD hadn’t predicted a heat wave in this region for around May 30-31, the local and national governments and the ECI should have made preparations for heat exposure leading at least to morbidity. Did they? To the extent that people wouldn’t have had to be hospitalised or have died if they’d made effective preparations, they didn’t. Actively papering over the effects of extreme weather (and of adverse exposure) has to be the most self-destructive thing we’re capable of in the climate change era.

Featured image: Representative image of a tree whose leaves appear to have wilted in the heat. Credit: Zoltan Tasi/Unsplash.

The cost of forgetting Ballia

By: V.M.
1 June 2024 at 16:37

In the day or so before June 1, 14 people died in Bihar of heat stroke. Ten of these people were election personnel deployed to oversee voting and associated activities in Bihar and Uttar Pradesh, and of them, five died in Bhojpur alone. On Friday, at least 17 people in Uttar Pradesh, 14 in Bihar, and four in Jharkhand had died of heat-related morbidity. And of the 17 in Uttar Pradesh, 13 deaths were reported from Mirzapur alone. This is a toll rendered all the more terrible by two other issues.

First, after the first phase of the polls, the Election Commission of India (ECI) recorded lower voter turnout than expected (from previous Lok Sabha polls) and blamed the heat. Srinivasan Ramani, my colleague at The Hindu, subsequently found “little correlation” between the maximum temperature recorded and turnouts in various constituencies, and in fact an anti-correlation in some places. By this time the ECI had said it would institute a raft of measures to incentivise voters to turn up. These were certainly welcome irrespective of there being a relationship between turnout and heat. However, did it put in place similar ‘special’ measures for electoral officials?

On March 16, the ECI forwarded an advisory that included guidelines by the National Disaster Management Authority to manage heat to the chief electoral officers of all states and Union territories. These guidelines had the following recommendations, among others: “avoid going out in the sun, especially between 12.00 noon and 3.00 pm”; “wear lightweight, light-coloured, loose, and porous cotton clothes. Use protective goggles, umbrella/hat, shoes or chappals while going out in sun”; and “avoid strenuous activities when Balliathe outside temperature is high”.

A question automatically arises: if poll officers are expected to avoid such activities, the polling process should have been set up such that those incidents requiring such activities wouldn’t arise in the first place. So were they? Because it’s just poka-yoke: if the process itself didn’t change, expecting poll officers to “avoid going out in the sun … between 12 pm and 3 pm” would have been almost laughable.

The second issue is worse. Heat wave deaths in India are often the product of little to no advance planning, even if the India Meteorological Department (IMD) has forecast excessive heat on certain dates. But to make matters worse, there was a deadly heat wave last year in the same region where many of these deaths have been reported now.

Recall that in the first half of June 2023, more than 30 people died of heat-related illnesses in Ballia village in Uttar Pradesh. After the chief medical superintendent of the local district hospital told mediapersons the people had indeed died of excessive heat, the state health department — led by deputy chief minister Brajesh Pathak — transferred him away, and his successors later denied heat had had anything to do with the deaths.

So even if the IMD hadn’t predicted a heat wave in this region for around May 30-31, the local and national governments and the ECI should have made preparations for heat exposure leading at least to morbidity. Did they? To the extent that people wouldn’t have had to be hospitalised or have died if they’d made effective preparations, they didn’t. Actively papering over the effects of extreme weather (and of adverse exposure) has to be the most self-destructive thing we’re capable of in the climate change era.

Featured image: Representative image of a tree whose leaves appear to have wilted in the heat. Credit: Zoltan Tasi/Unsplash.

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