San Francisco, Sep 9: As cities around the world accelerate efforts to meet their commitments to the Paris climate agreement, a new research on Sunday showed that ambitious urban climate policies can vastly reduce carbon emissions globally.

The research has been conducted by C40 Cities, The Global Covenant of Mayors for Climate and Energy and the NewClimate Institute.

Titled "Climate Opportunity: More Jobs; Better Health; Liveable Cities", the research estimates that by 2030 a boost in urban climate action can prevent approximately 1.3 million premature deaths per year, generate 13.7 million jobs in cities and save 40 billion hours of commuters' time plus billions of dollars in reduced household expenses each year.

Funded by Bloomberg Philanthropies, the report examines a number of effective urban solutions to climate change, including energy efficiency retrofits in buildings, enhanced bus networks and district-scale renewable energy.

It shows that these climate actions are strong drivers of positive public health and economic outcomes across countries and regions.

Its findings show investments in residential energy efficiency retrofits will result in a net creation of 5.4 million jobs in cities worldwide.

These investments will also result in significant household savings, as well as emissions reductions.

Improved bus services and more extensive networks can prevent the premature deaths of nearly one million people per year from air pollution and traffic fatalities worldwide.

It says district-scale renewable energy for heating and cooling in buildings can prevent a further 300,000 premature deaths per year by 2030, as well as create approximately 8.3 million jobs and contribute to significant emissions reductions.

Overall, climate action policies can have proportionally greater outcomes for lower income groups in developing cities, where populations have the most to gain from the introduction of new technologies.

"Climate Opportunity shows what the mayors of the world's great cities have known for a long time: climate, public health, and a strong economy are deeply connected," C40 Cities Executive Director Mark Watts said in a statement.

"We need cities around the world to implement the bold climate policies detailed in this report, if we are to avoid catastrophic climate change."

Thomas Day, partner at NewClimate Institute who led the research, said: "Cities account for 73 per cent of global greenhouse gas emissions, making large-scale climate action in urban areas an urgent focus of efforts to meet the highest goals of the Paris Agreement."

The release of the research comes just ahead of next week's Global Climate Action Summit in San Francisco, a global gathering of policymakers, scientists, businesses and activists committed to the goals of the Paris Agreement.

In the lead-up to the summit, C40 Cities and the Global Covenant of Mayors invited mayors to enhance their commitments to bold climate action, as part of the "One Planet Charter."

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Moscow, Dec 26: Azerbaijan on Thursday observed a nationwide day of mourning for the victims of the plane crash that killed 38 people and left all 29 survivors injured as speculation mounted about a possible cause of the disaster, with some experts saying that the airliner was damaged by Russian air defence fire.

Azerbaijan Airlines' Embraer 190 was en route from Azerbaijan's capital of Baku to the Russian city of Grozny in the North Caucasus on Wednesday when it was diverted for reasons yet unclear and crashed while making an attempt to land in Aktau in Kazakhstan after flying east across the Caspian Sea.

The plane went down about 3 kilometers (around 2 miles) from Aktau. Cellphone footage circulating online appeared to show the aircraft making a steep descent before smashing into the ground in a fireball. Other footage showed part of its fuselage ripped away from the wings and the rest of the aircraft lying upside down in the grass.

As the official crash investigation started, theories abounded about a possible cause, with some experts alleging that holes seen in the plane's tail section possibly indicate that it could have come under fire from Russian air defense systems fending off a Ukrainian drone attack.

Ukrainian drones had previously attacked Grozny, the provincial capital of the Russian republic of Chechnya, and other regions in the country's North Caucasus. An official in Chechnya said another drone attack on the region was fended off on Wednesday, although federal authorities didn't report it.

On Thursday, national flags were lowered across Azerbaijan, traffic across the country stopped at noon, and signals sounded from ships and trains as the country observed a nationwide moment of silence.

Speaking at a news conference on Wednesday, Azerbaijani President Ilham Aliyev said that it was too soon to speculate on the reasons behind the crash, but said that the weather had forced the plane to change from its planned course.

“The information provided to me is that the plane changed its course between Baku and Grozny due to worsening weather conditions and headed to Aktau airport, where it crashed upon landing,” he said.

Russia's civil aviation authority, Rosaviatsia, said that preliminary information indicated that the pilots diverted to Aktau after a bird strike led to an emergency on board.

According to Kazakh officials, those aboard the plane included 42 Azerbaijani citizens, 16 Russian nationals, six Kazakhs and three Kyrgyzstan nationals. Russia's Emergencies Ministry on Thursday flew nine Russian survivors to Moscow for treatment.

Mark Zee of OPSGroup, which monitors the world's airspace and airports for risks, said that the analysis of the images of fragments of the crashed plane indicate that it was almost certainly hit by a surface-to-air missile, or SAM.

“Much more to investigate, but at high level we'd put the probability of it being a SAM attack on the aircraft at being well into the 90-99 per cent bracket,” he said.

Osprey Flight Solutions, an aviation security firm based in the United Kingdom, warned its clients that the “Azerbaijan Airlines flight was likely shot down by a Russian military air-defence system”.

Osprey provides analysis for carriers still flying into Russia after Western airlines halted their flights during the war.

Osprey CEO Andrew Nicholson said that the company had issued more than 200 alerts regarding drone attacks and air defense systems in Russia during the war.

“This incident is a stark reminder of why we do what we do,” Nicholson wrote online. “It is painful to know that despite our efforts, lives were lost in a way that could have been avoided.”

Caliber, an Azerbaijani news website, claimed that the airliner was fired upon by a Russian Pantsyr-S air defence system as it was approaching Grozny. It questioned why Russian authorities failed to close the airport despite the apparent drone raid in the area. Khamzat Kadyrov, head of Chechnya's Security Council, said that air defences downed drones attacking the region on Wednesday.

Caliber also asked why Russian authorities didn't allow the plane to make an emergency landing in Grozny or other Russian airports nearby after it was hit.

Asked about the claims that the plane had been fired upon by air defence assets, Kremlin spokesman Dmitry Peskov told reporters that “it would be wrong to make hypotheses before investigators make their verdict.”

Kazakhstan's parliamentary Speaker Maulen Ashimbayev also warned against rushing to conclusions based on pictures of the plane's fragments, describing the allegations of air defence fire as unfounded and “unethical”.

Other officials in Kazakhstan and Azerbaijan have similarly avoided comment on a possible cause of the crash, saying it will be up to investigators to determine it.