Global map showing the highest marine heatwave (MHW) category experienced at each pixel in 2021 (reference period 1982–2011). Light grey indicates that no MHW occurred in a pixel over the entire year. (b) Stacked bar plot showing the percentage of the surface of the ocean experiencing an MHW on any given day of the year. (c) Stacked bar plot showing the cumulative percentage of the surface of the ocean that experienced an MHW over the year. Note: These values are based on when in the year a pixel first experienced its highest MHW category, so no pixel is counted twice. Horizontal lines in this figure show the final percentages for each category of MHW. (d) Stacked bar plot showing the cumulative number of MHW days averaged over the surface of the ocean. Note: This average is calculated by dividing the cumulative sum of MHW days per pixel weighted by the surface area of those pixels. Data: National Oceanic and Atmospheric Administration Optimum Interpolation Sea Surface Temperature (NOAA OISST). Graphic: Robert Schlegel

WMO: Four key climate change indicators broke records in 2021 – Past seven years have been the warmest seven years on record – “A dismal litany of humanity’s failure to tackle climate disruption”

GENEVA, 18 May 2022 (WMO) – Four key climate change indicators – greenhouse gas concentrations, sea level rise, ocean heat and ocean acidification – set new records in 2021. This is yet another clear sign that human activities are causing planetary scale changes on land, in the ocean, and in the atmosphere, with harmful and […]

Global daily atmospheric CO2, 2012-2022. The figure shows daily averaged CO2 from four GML Atmospheric Baseline observatories; Barrow, Alaska (in blue), Mauna Loa, Hawaii (in red), American Samoa (in green), and South Pole, Antarctica (in yellow). The thick black lines represent the average of the smoothed seasonal curves and the smoothed, de-seasonalized curves for each of the records. These lines are a very good estimate of the global average levels of CO2. Data for 2022 are through 7 May 2022. Graphic: NOAA

Earth’s atmospheric CO2 hits highest recorded level in human history – Unprecedented level comes as greenhouse gas emissions continue around the world

By Ethan Freedman 6 May 2022 NEW YORK (The Independent) – Monthly average carbon dioxide (CO2) levels have reached above 420 parts per million (ppm) for the first time on record. The new data, from Hawaii’s Mauna Loa Observatory, were released by the National Oceanic and Atmospheric Administration (NOAA). Atmospheric CO2, driven higher in large part […]

Monthly mean atmospheric methane abundance, 1983-2021. The globally-averaged, monthly mean atmospheric methane abundance is determined from marine surface sites. Values for 2021 are preliminary. Graphic: NOAA Global Monitoring Laboratory

Increase in atmospheric methane set another record during 2021 – Carbon dioxide levels also record a big jump – “The evidence is consistent, alarming, and undeniable”

7 April 2022 (NOAA) – For the second year in a row, NOAA scientists observed a record annual increase in atmospheric levels of methane, a powerful, heat-trapping greenhouse gas that’s the second biggest contributor to human-caused global warming after carbon dioxide. NOAA’s preliminary analysis showed the annual increase in atmospheric methane during 2021 was 17 […]

Global net anthropogenic greenhouse gas emissions projected to 2050. Projected global GHG emissions from Nationally Determined Contribution (NDCs) announced prior to COP26 would make it likely that warming will exceed 1.5°C and also make it harder after 2030 to limit warming to below 2°C. Graphic: IPCC

Amid backsliding on climate, the renewables effort now must be tripled – “A litany of broken climate promises”

By António Guterres 4 April 2022 (The Washington Post) – A report released Monday by the Intergovernmental Panel on Climate Change is a litany of broken climate promises. Together with the IPCC’s previous two reports on physical science and adaptation in the past year, it reveals the yawning gap between climate pledges and reality. And the reality is that we are […]

Smoke rises after Russian shelling near Kyiv, Ukraine, on 17 March 2022. Photo: Gleb Garanich / REUTERS

Russia’s war on Ukraine threatens climate goals, warns UN chief – “This is madness. Addiction to fossil fuels is mutually assured destruction.”

By Fiona Harvey 21 March 2022 (The Guardian) – The war in Ukraine risks putting global targets on the climate out of reach, the UN secretary general has warned, if countries respond to Russia’s aggression by increasing their use of fossil fuels. António Guterres said the aim of limiting global temperatures to 1.5C above pre-industrial levels, […]

Projected U.S. energy-related carbon dioxide (CO2) emissions by fuel source in the AEO2022 reference case (left) and U.S. Energy-related CO2 emissions by AEO2022 economic growth cases (right). Energy‐related CO2 emissions dip through 2035 before climbing in later projection years. Graphic: EIA

U.S. energy projections to 2050: Fossil fuels still most-consumed energy sources through 2050 – Energy consumption increases as population and economic growth outweigh efficiency gains – Energy‐related CO2 emissions dip through 2035 but climb later

3 March 2022 (EIA) – Key takeaways from the Reference case and side cases: Petroleum and natural gas remain the most-consumed sources of energy in the United States through 2050, but renewable energy is the fastest growing Motor gasoline remains the most prevalent transportation fuel despite electric vehicles gaining market share Energy-related carbon dioxide (CO2) […]

A man stands on the roof of a house in Colonia El Carmen as a red glare emanates from flares dotted around the Cactus gas processing center, run by state oil company Pemex, in Reforma municipality in Chiapas, Mexico. Photo: Edgard Garrido / REUTERS

Gas flaring soars in Mexico, derailing its climate change pledges as it seeks to boost oil output – “It’s like hell”

By Stefanie Eschenbacher 23 February 2022 (Reuters) – It never gets completely dark in Colonia El Carmen, home to Mexico’s largest natural gas processing center, in the poor southern state of Chiapas. After sunset, a red glare emanates from flares dotted around the Cactus gas processing center, run by state oil company Petroleos Mexicanos (Pemex). […]

Global greenhouse gas emissions, 1990-2020. The reduction in emissions in 2020 due to the COVID-19 pandemic and global recession was 10 times greater than the impact on emissions from the 2008 global financial crisis. Graphic: Rhodium Group

Global greenhouse gas reduction in 2020 from pandemic and global recession “was 10 times greater than the impact on emissions from the 2008 global financial crisis”

By Alfredo Rivera, Shweta Movalia, Hannah Pitt, and Kate Larsen 23 December 2021 (Rhodium Group) – Understanding annual trends in greenhouse gas (GHG) emissions is a critical input for decision-makers in their efforts to reach net-zero emissions, whether is at the national, state, city, or corporate levels. Tracking emissions of the 190+ Parties to the […]

Number of flights performed by the global airline industry, 2004-2022. The value for 2022 is a forecast. Figures prior to 2016 were taken from previous reports. 2021 figure was estimated. Graphic: Statista

Near-empty flights crisscross Europe to secure landing slots – “The EU surely is in a climate emergency mode”

By Raf Casert 6 January 2022 BRUSSELS (AP) – Europe’s sky is filling up with near-empty polluting planes that serve little other purpose than safeguarding airlines’ valuable time slots at some of the world’s most important airports. The highly contagious omicron variant of COVID-19 has put many off flying, and because of it, getting people and goods […]

Globally averaged atmospheric CO2 mole fraction (left) and growth rate (right), 1984-2020. In 2020, the concentration of carbon dioxide (CO2), the most important greenhouse gas, reached 413.2 parts per million in 2020 and is 149 percent of the pre-industrial level. Graphic: WMO

WMO Greenhouse Gas Bulletin 2021: Another year, another record – “CO2 in the atmosphere breached the milestone of 400 parts per million in 2015. And just five years later, it exceeded 413 ppm.”

GENEVA, 25 October 2021 (WMO) – The abundance of heat-trapping greenhouse gases in the atmosphere once again reached a new record last year, with the annual rate of increase above the 2011-2020 average. That trend has continued in 2021, according to the World Meteorological Organization (WMO) Greenhouse Gas Bulletin. Concentration of carbon dioxide (CO2), the most […]

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