I’m going to do all this reading and research anyway… might as well share what I learn!
NEWS
+
VIEWS
February 15 2024

global process for handling life’s risks is breaking down, time to “buckle up” for hotter droughts in the western U.S., a foot of rain falls on Los Angeles in one day, U.S. world’s largest exporter of natural gas, solar farm replaces coal plant in Minnesota

2023 was the hottest year ever recorded, and The Washington Post notes that some leading scientists are concerned that a feared acceleration of global warming is underway. James Hansen notes: “The proximate cause of the acceleration is an increase of Earth’s energy imbalance, specifically a substantial darkening of the planet (decreased albedo) equivalent to a CO2 increase of more than 100 ppm, although it is difficult to apportion the albedo change between aerosol forcing and cloud feedbacks because of limited global measurements.”

Several agencies that compute global average temperature have reported that, in 2023, the Earth reached 1.5°C above preindustrial levels, and The New York Times reminds us this is a milestone to note. While the global climate goal of keeping average temperatures to 1.5°C or below is a multi-year average, not just a single year, clearly the Earth will be at this temperature level soon. “Based on the current pace of carbon emissions, it will only be a few more years before we have altered the atmosphere’s chemistry so much that even drastic cuts to emissions wouldn’t be enough to stop warming from eventually creeping above 1.5 degrees.”

As Earth’s average temperature approaches 1.5°C above preindustrial levels, Inside Climate News describes the results of social-science research concluding that “the increasing climate shocks could trigger more social unrest and authoritarian, nationalist backlashes.” The article notes that the large number of social crises currently underway are crowding out people’s attention to climate change. This is exacerbated by a new flood of disinformation that seeks to further confound efforts to reduce fossil-fuel use. Some of the resistance arises from those who think they are losing privileged access to resources, funding and subsidies. Climate scientist Peter Kalmus notes that stopping global heating is “a life-or-death task for humanity and the planet, just most people haven’t realized it yet…”

read more
January 31 2024

fires both a product and source of global warming, a large battery under construction in Utah, getting “grid services” from renewables, drought affects operation of Panama Canal, the unintended impacts of sea walls

The Guardian reports that the massive fires in Canada in 2023 tripled that country’s annual greenhouse-gas emissions. This is an example of a possible tipping point related to forests, where ecosystems that traditionally have been carbon sinks turn into sources of carbon (a New York Times article notes that recent satellite measurements confirm the importance of undisturbed lands as carbon sinks). As emissions from major fires further heat the planet, it becomes more likely that forests will continue to burn, resulting in more emissions. The loss of wetlands (including bogs) in the boreal forest, a result of hotter and drier conditions caused by climate change, has also made massive fires more likely.

While fire is a natural part of forest ecosystems, the scale of the fires we are seeing now is unprecedented, driven by climate change and historical forestry practices. The New York Times describes how megafires, such as those last year in Canada, are transforming the landscape. Some are referring to the age in which we now live as the Pyrocene, given the size and frequency of these megafires. The World Resources Institute concludes that, annually, fires now burn twice as much tree cover as they did 20 years ago.

Yale e360 notes that “the boreal forests and unglaciated polar lowlands are Earth’s most lake-rich biome, hosting nearly half of the planet’s lakes by surface area.” Like the forests, the lakes have been a carbon sink as sediments accumulate in their cold waters where there is little decomposition. However, as these regions warm, researchers are finding that decomposition is increasing. The author accompanies researchers to visit several lakes in Greenland where the scientists expected their measurements to reveal the lakes to be sinks, but the field measurements determined all the lakes to be sources during the record heat of 2023…

read more

IN BRIEF: PAST
CLIMATE NEWS

MORE MY TAKES
 

NEWS
+
VIEWS
I’m going to do all this reading and research anyway… might as well share what I learn!
February 15 2024

global process for handling life’s risks is breaking down, time to “buckle up” for hotter droughts in the western U.S., a foot of rain falls on Los Angeles in one day, U.S. world’s largest exporter of natural gas, solar farm replaces coal plant in Minnesota

2023 was the hottest year ever recorded, and The Washington Post notes that some leading scientists are concerned that a feared acceleration of global warming is underway. James Hansen notes: “The proximate cause of the acceleration is an increase of Earth’s energy imbalance, specifically a substantial darkening of the planet (decreased albedo) equivalent to a CO2 increase of more than 100 ppm, although it is difficult to apportion the albedo change between aerosol forcing and cloud feedbacks because of limited global measurements.”

Several agencies that compute global average temperature have reported that, in 2023, the Earth reached 1.5°C above preindustrial levels, and The New York Times reminds us this is a milestone to note. While the global climate goal of keeping average temperatures to 1.5°C or below is a multi-year average, not just a single year, clearly the Earth will be at this temperature level soon. “Based on the current pace of carbon emissions, it will only be a few more years before we have altered the atmosphere’s chemistry so much that even drastic cuts to emissions wouldn’t be enough to stop warming from eventually creeping above 1.5 degrees.”

As Earth’s average temperature approaches 1.5°C above preindustrial levels, Inside Climate News describes the results of social-science research concluding that “the increasing climate shocks could trigger more social unrest and authoritarian, nationalist backlashes.” The article notes that the large number of social crises currently underway are crowding out people’s attention to climate change. This is exacerbated by a new flood of disinformation that seeks to further confound efforts to reduce fossil-fuel use. Some of the resistance arises from those who think they are losing privileged access to resources, funding and subsidies. Climate scientist Peter Kalmus notes that stopping global heating is “a life-or-death task for humanity and the planet, just most people haven’t realized it yet…”

read more
January 31 2024

fires both a product and source of global warming, a large battery under construction in Utah, getting “grid services” from renewables, drought affects operation of Panama Canal, the unintended impacts of sea walls

The Guardian reports that the massive fires in Canada in 2023 tripled that country’s annual greenhouse-gas emissions. This is an example of a possible tipping point related to forests, where ecosystems that traditionally have been carbon sinks turn into sources of carbon (a New York Times article notes that recent satellite measurements confirm the importance of undisturbed lands as carbon sinks). As emissions from major fires further heat the planet, it becomes more likely that forests will continue to burn, resulting in more emissions. The loss of wetlands (including bogs) in the boreal forest, a result of hotter and drier conditions caused by climate change, has also made massive fires more likely.

While fire is a natural part of forest ecosystems, the scale of the fires we are seeing now is unprecedented, driven by climate change and historical forestry practices. The New York Times describes how megafires, such as those last year in Canada, are transforming the landscape. Some are referring to the age in which we now live as the Pyrocene, given the size and frequency of these megafires. The World Resources Institute concludes that, annually, fires now burn twice as much tree cover as they did 20 years ago.

Yale e360 notes that “the boreal forests and unglaciated polar lowlands are Earth’s most lake-rich biome, hosting nearly half of the planet’s lakes by surface area.” Like the forests, the lakes have been a carbon sink as sediments accumulate in their cold waters where there is little decomposition. However, as these regions warm, researchers are finding that decomposition is increasing. The author accompanies researchers to visit several lakes in Greenland where the scientists expected their measurements to reveal the lakes to be sinks, but the field measurements determined all the lakes to be sources during the record heat of 2023…

read more

IN BRIEF: PAST
CLIMATE NEWS

MORE MY TAKES