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Areas selected for smart city development are ‘heat islands’: Study

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Areas selected for smart city development are ‘heat islands’: Study

[vc_row][vc_column][vc_column_text]~By Dinesh C Sharma

Study covered 89 of 100 areas selected for smart city projects, says temperature could be 1 to 6 degrees higher than surrounding areas in these heat islands

New Delhi: The phenomenon of urban heat islands, in which concrete and built areas in cities experience higher temperatures than surrounding rural areas, may get accentuated with rapid urbanisation. This is the conclusion of a new study of urban areas selected for development of smart cities.

The study, which covered 89 of 100 areas selected for development of smart cities, has found that agriculture and irrigation are two dominant drivers of urban heat islands or UHI in India. In addition, significant presence of atmospheric aerosols – mainly pollutants – over urban areas can influence UHI.

Moisture from irrigation canals and agriculture fields plays a key role in keeping rural areas surrounding cities much cooler than urban areas, resulting in cities becoming heat islands. In a heat island, temperature could be 1 to 6 degrees higher than surrounding areas. Remote sensing data and climate modelling were used to evaluate UHI all over the country.

When the surrounding non-urban areas have no agriculture during summer, cities are actually relatively cooler during daytime. However, if the non-urban areas are under irrigated agriculture, cities are warmer than surroundings. This means UHI effect during day time is mainly driven by agriculture and irrigation. However, in the night-time, cities are significantly warmer than surroundings in both winter and summer seasons. Night-time urban heat is mainly driven by the amount of heat stored in buildings and other impervious surfaces.

Urban areas located in highly irrigated regions – Indo-Gangetic Plain and north-west India (Haryana and Punjab) – show UHI intensity of 3 to 5 degrees. During summer season (April and May), when air temperature is at the peak, land surface temperature becomes is higher than that of the post-monsoon season in absence of agricultural operations. Moreover, amount of moisture and vegetation in non-urban areas are also limited as crops are largely harvested by the end of March and soil moisture is depleted due to high atmospheric water demands, the study said.

“While urban areas have experienced increased number of heat waves and temperature extremes in recent past, urban heat island effect driven by rapid urbanization can further worsen extreme hot conditions in cities,” pointed out Dr Vimal Mishra, a scientist at the Water and Climate Lab of Indian Institute of Technology, Gandhinagar, which did the study. The results of the study appeared in the journal Scientific Reports.

The development of smart cities will result in rapid growth in urban infrastructure and population, leading to increases in UHI intensity. “Our results can provide policy insights for development of smart cities,” Mishra said. “Considering night-time heating which could be significant during heat waves, measures such as passive cooling should be used. Building materials that absorb less heat and are sustainable can reduce the amount of heating caused by stored heat.” The presence of water bodies and vegetation in cities can also help reduce additional night-time heating in urban heat islands.

The study team included Rahul Kumar and Vimal Mishra (IIT Gandhinagar); Jonathan Buzan and Matthew Huber (Purdue University, USA); Rohini Kumar (UFZ-Helmholtz Centre for Environmental Research, Leipzig, Germany ); and Drew Shindel (Duke University, USA).

(The article is from a syndicated feed provided by the India Science Wire)[/vc_column_text][/vc_column][/vc_row]

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Amit Shah counters delimitation concerns, says southern states to gain Lok Sabha seats

Amit Shah assures Parliament that southern states will gain Lok Sabha seats after delimitation, countering opposition criticism during the women’s reservation debate.

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Amit Shah

Union Home Minister Amit Shah on Thursday addressed concerns over the proposed delimitation exercise, asserting in the Lok Sabha that southern states will not lose representation but instead see an increase in their number of seats.

His remarks came during a heated debate linked to the implementation of women’s reservation, where opposition parties have raised fears that population-based delimitation could reduce the political weight of southern states.

Shah rejected these claims, calling them misleading, and said the proposed framework ensures fairness while expanding the overall strength of the Lok Sabha.

Seat count to rise with expansion of Lok Sabha

The government has indicated that the total number of Lok Sabha seats could increase significantly as part of the delimitation process. In this expanded House, the combined representation of southern states is expected to rise from 129 seats at present to around 195 seats.

Shah emphasised that no state will lose seats in absolute terms, and the exercise is designed to reflect population changes while maintaining balance across regions.

State-wise projections shared in Parliament

During his address, Shah also provided indicative figures for individual southern states, suggesting notable increases in representation. According to the projections:

  • Tamil Nadu could see its seats rise substantially
  • Kerala, Telangana, and Andhra Pradesh are also expected to gain additional seats
  • Karnataka’s representation may increase as well

These figures were presented to counter the argument that delimitation would disproportionately favour northern states.

Political debate intensifies over linkage with women’s quota

The delimitation exercise has been closely linked to the rollout of women’s reservation, which proposes one-third seats for women in Parliament and state assemblies.

Opposition leaders have questioned this linkage, arguing that tying reservation to delimitation could delay its implementation and raise federal concerns. Some leaders have also warned that the move could impact national unity if apprehensions among states are not addressed.

The government, however, maintains that the reforms are necessary to ensure equitable representation and to align the electoral system with demographic realities.

Centre dismisses ‘false narrative’ on southern states

Shah reiterated that concerns about southern states losing influence are unfounded. He said the delimitation process will increase representation across regions and described the criticism as a “false narrative” aimed at creating confusion.

The issue is expected to remain a key flashpoint as Parliament continues discussions on the women’s reservation framework and related legislative changes.

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PM Modi assures no discrimination in women’s quota, delimitation debate intensifies in Parliament

PM Narendra Modi has assured that women’s reservation will be implemented without discrimination, amid a heated debate over delimitation in Parliament.

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PM modi

Prime Minister Narendra Modi has assured that there will be no discrimination in the implementation of women’s reservation, as Parliament witnessed a sharp debate over the proposed linkage between the quota and delimitation exercise.

During the ongoing special session, the government reiterated its commitment to ensuring fair representation while addressing concerns raised by opposition parties regarding the timing and structure of the legislation.

The proposed framework aims to reserve 33 percent of seats for women in the Lok Sabha and state assemblies. However, its implementation is tied to a fresh delimitation exercise, which is expected after the next census.

Opposition questions timing and intent

Opposition leaders have raised concerns that linking the women’s quota to delimitation could delay its implementation. They argue that the process of redrawing constituencies may push the actual rollout further into the future.

The issue has triggered a broader political confrontation, with multiple parties questioning whether the move could alter representation across states.

Some critics have also alleged that the delimitation exercise could disproportionately benefit certain regions based on population, a charge the government has rejected.

Government reiterates commitment to fair implementation

Responding to these concerns, the Centre has maintained that the reforms are necessary to ensure accurate and updated representation based on population data.

Leaders from the ruling side have repeatedly emphasized that the process will be carried out transparently and without bias. The assurance that there will be “no discrimination” is aimed at addressing fears among states and opposition parties.

The debate marks a key moment in Parliament, with both sides engaging in intense exchanges over one of the most significant electoral reforms in recent years.

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Give all tickets to Muslim women, Amit Shah says, attacking Akhilesh Yadav on sub-quota demand

A sharp exchange between Amit Shah and Akhilesh Yadav in Parliament over sub-quota for Muslim women highlights key divisions on women’s reservation implementation.

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A heated exchange broke out in Parliament during discussions on the women’s reservation framework, with Union Home Minister Amit Shah and Samajwadi Party chief Akhilesh Yadav locking horns over the demand for a sub-quota for Muslim women.

The debate unfolded as the government pushed forward key legislative measures to implement 33% reservation for women in the Lok Sabha and state assemblies.

Akhilesh Yadav argued that the proposed reservation must ensure representation for women from marginalised communities, including Other Backward Classes (OBCs) and Muslim women. He said that without such provisions, large sections could remain excluded from political participation.

He also questioned the timing of the bill, alleging that the Centre was avoiding a caste census. According to him, a census would lead to renewed demands for caste-based reservations, which the government is reluctant to address.

Government rejects religion-based quota

Responding to the demand, Amit Shah made it clear that reservation based on religion is not permitted under the Constitution.

He stated that any proposal to provide quota to Muslims on religious grounds would be unconstitutional, firmly rejecting the idea of a separate sub-quota for Muslim women within the broader reservation framework.

The government has maintained that the existing framework already includes provisions for Scheduled Castes (SC) and Scheduled Tribes (ST) women within the overall reservation structure.

Wider political divide over implementation

The issue of sub-categorisation within the women’s quota has emerged as a major flashpoint, even as most opposition parties broadly support the idea of women’s reservation.

Samajwadi Party leaders reiterated that their support for the bill depends on inclusion of OBC and minority women, while the government continues to defend its constitutional position.

The debate is part of a broader discussion during the special Parliament session, where multiple bills linked to delimitation and implementation of the women’s quota are being taken up.

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