Annual Planetary Temperature Continues to Rise

More than 500 scientists from 61 countries have again measured the annual planetary temperature. The diagnosis is not good.

Wildfire strikes Bandipur national park, one of India’s prime tiger reserves. Image: By NaveenNkadalaveni, via Wikimedia Commons

August 17, 2020 by Tim Radford, Climate News Network (CC BY-ND 4.0)

LONDON, 17 August, 2020 – Despite global promises to act on climate change, the Earth continues to warm. The annual planetary temperature confirms that the last 10 years were on average 0.2°C warmer than the first 10 years of this century. And each decade since 1980 has been warmer than the decade that preceded it.

The year 2019 was also one of the three warmest years since formal temperature records began in the 19th century. The only warmer years – in some datasets but not all – were 2016 and 2015. And all the years since 2013 have been warmer than all other years in the last 170.

The link with fossil fuel combustion remains unequivocal: carbon dioxide levels in the atmosphere increased by 2.5 parts per million (ppm) in 2019 alone. These now stand at 409 ppm. The global average for most of human history has hovered around 285 ppm.

Two more greenhouse gases – nitrous oxide and methane, both of them more short-lived – also increased measurably.

This millennium has been warmer than any comparable period since the Industrial Revolution.”

Robert Dunn, of the UK Met Office

The study, in the Bulletin of the American Meteorological Society, is a sobering chronicle of the impact of climate change in the decade 2010-2019 and the year 2019 itself. It is the 30th such report, it is signed by 528 experts from 61 countries, and it is a catalogue of unwelcome records achieved and uncomfortable extremes surpassed.

July 2019 was the hottest month on record. Record high temperatures were measured in more than a dozen nations across Africa, Europe, Asia and the Caribbean. In North America, Alaska scored its hottest year on record.

The Arctic as a whole was warmer than in any year except 2016. Australia achieved a new nationally average daily temperature high of 41.9°C on 18 December, breaking the previous 2013 record by 1.6°C. But even Belgium and the Netherlands saw temperatures higher than 40°C.

For the 32nd consecutive year, the world’s alpine glaciers continued to get smaller and retreat further uphill. For the first time on record in inland Alaska, when measured at 26 sites, the active layer of permafrost failed to freeze completely. In September, sea ice around the Arctic reached a minimum that tied for the second lowest in the 41 years of satellite records.

Catalogue of Extremes

Global sea levels set a new high for the eighth consecutive year and are now 87.6mm higher than the 1993 average, when satellite records began. At a depth of 700 metres, ocean temperatures reached new records, and the sea surface temperatures on average were the highest since 2016.

Drought conditions led to catastrophic wildfires in Australia, in Indonesia, Siberia and in the southern Amazon forests of Bolivia, Brazil and Peru. And around the equator, meteorologists catalogued 96 named tropical storms: the average for 1981 to 2010 was 82. In the North Atlantic, just one storm, Hurricane Dorian, killed 70 people and caused $3.4bn (£2.6bn) in damage in the Bahamas.

“This millennium has been warmer than any comparable period since the Industrial Revolution. A number of extreme events, such as wildfires, heatwaves and droughts, have at least part of their root linked to the rise in global temperature,” said Robert Dunn, of the UK Met Office, one of the contributors.

“And of course the rise in global temperature is linked to another climate indicator, the ongoing rise in emissions in greenhouse gases, notably carbon dioxide, nitrous oxide and methane.” Climate News Network

More Than 260 Major, Mostly Illegal Amazon Fires Detected Since Late May

The Amazon Fire Season is Building Momentum

Article originally appeared in Mongabay.com, by Liz Kimbrough on August 13, 2020 (CC BY-ND 4.0)

  • The Amazon fire season is building momentum, with 227 fires covering nearly 128,000 hectares, reported between May 28 and August 10. By today, that number rose to 266 fires.
  • More than 220 of the May 28 to June 10 fires occurred in Brazil, with just six in Bolivia, and one in Peru. 95% of the Brazilian fires were illegal and in violation of the nation’s 120-day ban on fires. Brazilian President Jair Bolsonaro has called the 2020 reports of deforestation and fires a “lie.”
  • Most Amazon blazes are set, with land grabbers, ranchers and farmers using fire as a deforestation tool, and as a means of converting rainforest to pasture and croplands.
  • Fourteen of the Brazilian fires were within protected areas. The most heavily impacted of these were Jamanxim and Altamira national forests in Pará state — areas long notorious for criminal land grabbing.
This natural-color image of smoke and fires in several states within Brazil including Amazonas, Mato Grosso, and Rondônia was collected by NOAA/NASA's Suomi NPP using the VIIRS (Visible Infrared Imaging Radiometer Suite) instrument on August 20, 2019. Although it is not unusual to see fires in Brazil at this time of year due to high temperatures and low humidity it seems this year the number of fires may be record setting. According to Brazil’s space research center INPE almost 73,000 fires have been recorded so far this year. INPE is seeing an 83% increase over the same period in 2018. NASA's Earth Observing System Data and Information System (EOSDIS) Worldview application provides the capability to interactively browse over 700 global, full-resolution satellite imagery layers and then download the underlying data. Many of the available imagery layers are updated within three hours of observation, essentially showing the entire Earth as it looks "right now.” Suomi NPP is managed by NASA and NOAA. Image Courtesy: NASA Worldview, Earth Observing System Data and Information System (EOSDIS).
Natural-color image of smoke from wildfires burning in the Amazon basin on August 20, 2019, taken by the Suomi NPP using the VIIRS (Visible Infrared Imaging Radiometer Suite)

A total of 227 fires covering 127,866 hectares (315,963 acres) — an area nearly twice as large as New York City — were reported between May 28 and August 10. The number of fires is increasing as the region enters the peak fire season, according to an analysis of satellite data by the Monitoring of the Andean Amazon Project (MAAP).

As of today, August 13, that number has risen to 266 fires.

More than 220 of those observed between May 28 and August 10 occurred in Brazil, with just six in Bolivia and one in Peru. Over 95% of the Brazilian blazes were illegal, violating the nation’s 120 day fire ban enacted by President Jair Bolsonaro on July 15. The illegal blazes are occurring despite the advance deployment of the Brazilian Army to the Amazon in May to prevent fires being set.

Major fires in Brazil in 2020

Fire data from MAAP’s Amazon Fire Monitoring App is up to date through August 11, 2020

Only two of the reported blazes were confirmed forest fires, covering 1,447 hectares (388 acres) in Brazil. The rest took place on lands cleared of forest in the past two years, underscoring the significance of deforestation as a catalyst for fire in the Amazon.

“We argue that the central issue is actually deforestation and [that] the fires are actually a smoking indicator of this forest loss,” the report states.

The Amazon fires that garnered international attention in 2019 were not acts of nature, but generally followed a pattern of deforestation, with the blazes set by farmers, landowners and land grabbers as a means to convert cleared forests into pasture and croplands.

Last year, MAAP analyzed archived satellite imagery from Planet Explorer, and discovered that many of 2019’s fires burned areas deforested earlier that same year. Based on that finding, MAAP predicted 2020 fire locations would follow suit, occurring in areas that saw major deforestation earlier this year. Currently, four of the seven areas MAAP predicted would burn in 2020 have, according to Matt Finer, senior research specialist and director of MAAP.

This week, President Bolsonaro denied both this year’s fires and 2020 deforestation in remarks during the second Presidential Summit of the Letícia Pact for the Amazon. “There is no fire outbreak, not a quarter of a hectare was deforested,” Bolsonaro said. “It is a lie, this story that the Amazon burns with fire.”

The latest data released by INPE, the country’s National Institute for Space Research, found that 9,205 square kilometers — an area about eleven-and-a-half times as big as New York City — were deforested in the Brazilian Amazon over the past 12 months, an increase of 34.5% over the comparative period in the previous year. The official annual estimate of deforestation between August 1, 2019 and July 31, 2020 is expected to top 11,000 square kilometers when it is released this fall.

INPE: Accumulated Amazon Deforestation August 1 to July 31 (sq km), Source: Mongabay.com

MAAP monitors fires in the Amazon in near real time, using the Real-time Amazon Fire Monitoring app to pinpoint areas with elevated aerosol emissions, caused by large amounts of biomass burning. A “major fire” is defined as one with an aerosol index of  >1 (appearing cyan-green to red on the app). Once an alert is detected, MAAP analyzes high resolution satellite imagery to confirm the fire. MAAP also compares satellite imagery from year to year to determine if the fire broke out following a recent deforestation event. This measure is different than the widely reported “hotspots” from satellites, which already number in the tens of thousands this dry season.

“We go two steps further than the commonly reported (and often misleading in my opinion) heat-based alerts, to much more precisely track major fires,” Finer said.

Both NASA and INPE, Brazil’s national space research institute, use satellites with infrared “heat-sensing” technology to detect hotspots. These may have a limited capacity to detect smaller fires and sub-canopy fires, which can be substantial in tropical forests.

An IBAMA environmental agency agent views illegally felled trees inside Jamanxim National Forest in 2014. Amazon illegal deforestation typically takes place in several steps: valuable trees are logged and sold, then the rest are cut, left to dry, and burned in preparation for turning the land into cattle pasture and croplands. Image courtesy of IBAMA.
An IBAMA environmental agency agent views illegally felled trees inside Jamanxim National Forest in 2014. Amazon illegal deforestation typically takes place in several steps: valuable trees are logged and sold, then the rest are cut, left to dry, and burned in preparation for turning the land into cattle pasture and croplands. Image courtesy of IBAMA.

In Brazil, 14 of the reported 2020 fires arose within protected areas. The most heavily impacted are the Jamanxim and Altamira National Forests in Pará state — conserved areas notorious for criminal land grabbing and illegal deforestation.

The Jamanxim National Forest was hard hit by deforestation in 2019, losing more than 3% of its forest cover in May 2019 alone. Those living in the area say Bolsonaro’s anti-environment rhetoric has emboldened land speculators and loggers to clear the protected lands and sell the property to ranchers at inflated rates. While sometimes prosecuted for these violations, most law breakers never pay their fines, and the government — under the Temer and Bolsonaro administrations — periodically has issued or urged amnesties to illegal deforesters and land grabbers.

Giant otters (Pteronura brasiliensis). While Amazon fires are known to destroy large swaths of habitat, detailed studies on annual wildlife losses due to fires are largely lacking. Image by Charles J. Sharp, Sharp Photography, sharpphotography.co.uk licensed under the Creative Commons Attribution-Share Alike 4.0 International license.

The Altamira National Forests, home to the giant otter (Pteronura brasiliensis), Amazonian manatee (Trichechus inunguis), and the jaguar (Panthera onca), saw an 85% rise in deforestation in 2019 over the prior year. Illegal tin mining, gold mining, logging, and cattle ranching have escalated deforestation in the protected area.

“We emphasize, however, that these fires [in Jamanxim and Altamira National Forests] were burning recently deforested areas, not [naturally occurring] forest fires,” says the MAAP report, “and so, again, the primary issue is deforestation.”

Citation: Finer M, Nicolau A, Villa L (2020) 200 Major Amazon Fires in 2020: Tracker Analysis. MAAP.

Liz Kimbrough is a staff writer for Mongabay. Find her on Twitter @lizkimbrough

Three Out of the Past Five Julys Were the Hottest on Record

By Johnny Wood, Senior Writer, Formative Content, World Economic Forum (Public License)

  • July temperatures in 2016, 2019, and 2020 were the hottest ever.
  • The last fully intact ice shelf in Canadian Arctic collapsed in July’s heatwave.
  • Climate change could double the area of central Europe affected by severe drought by the second half of the century.

The July just gone was the third-hottest ever recorded, according to the Copernicus Climate Change Service. This isn’t the result of a one-off heatwave or freak weather front, but part of an alarming trend that has seen three of the hottest July months ever recorded – peaking in 2016, followed by 2019 – occurring within the past five years.

Have you read?

  • A climate scientist explains what the melting Arctic means for the world
  • The shrinking Arctic ice protects us all. It’s time to act
  • 2020 is predicted to be the hottest year on record, according to NASA

June 2020 saw the joint-hottest average temperatures for this month, together with 2019. Both Junes had average global temperatures 0.5C above the 1981-2010 average.

For more temperate parts of the world, hotter summers are concerning. But what happens when summers get hotter in already very hot places?

Too hot to survive without air conditioning

This summer, Iraq’s capital Baghdad has endured some of the hottest days ever, with temperatures in excess of 50C, during a heatwave that has hit much of the Middle East. While the region is used to hot weather, countries including Israel and Lebanon have experienced unusual heat extremes, a sign of things to come as climate change continues to heat up the planet.

Humans could face a future that’s too hot to survive without air conditioning. Exposure to extreme heat can stress the body to the point where organs shut down, presenting potentially life threatening conditions for many people living in developing countries.

But hot weather is only part of the climate crisis story.

Warming temperatures make extreme weather events, such as floods, storms and droughts, both more likely and potentially more intense.

Warming temperatures could make extreme droughts as much as seven times more likely, according to new research. This means the area of cropland affected by extreme drought across central Europe could double in the second half of this century, to more than 40 million hectares (approximately 400,000 square kilometres), the Guardian reported.

Using precipitation and temperature data from records from as far back as 1766 to inform climate change computer models, researchers from the UFZ-Helmholtz Centre for Environmental Research in the German city of Leipzig forecast that moderate reductions in greenhouse gas emissions could reduce the drought-affected area of central Europe by 40%.

Sinking islands

In the icy wilds of remote northern Canada, the threat of droughts isn’t a consideration, but the region is no less affected by climate change.

At the periphery of Ellesmere Island sits the Milne Ice Shelf, the last fully intact ice shelf in the Canadian Arctic. July’s extreme heat caused two-fifths of this natural wonder to break up in just two days.

“This was the largest remaining intact ice shelf, and it’s disintegrated, basically,” Luke Copland, glaciologist at Canada’s University of Ottawa, told Reuters, explaining that summer temperatures in the Canadian Arctic this year climbed 5C above the 30-year average.

“You feel like you’re on a sinking island chasing these features, and these are large features. It’s not as if it’s a little tiny patch of ice you find in your garden.”

Infographic: Lowest Arctic Ice Cover for July in Recorded History | Statista
Infographic: Lowest Arctic Ice Cover for July in Recorded History | Statista

Extreme July temperatures have hit the entire Arctic region, which scientists say is warming more than twice as fast as the rest of the planet. The 2020 summer melt produced the lowest recorded ice cover for the month of July since records began in 1981.

While the impact of global warming is clear to see, it’s not too late to curb emissions and tackle the climate crisis, but urgent action is needed to accelerate the journey toward net-zero emissions.