Wetlands are not just natural wonders; they are essential to the health and prosperity of our cities.

By integrating wetland management into our planning we can pave the way for a more sustainable urban future.

➡️ citieswithnature.org/the-val…… #WetlandsWednesday

Via @RamsarConv

UN Biodiversity

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Which tool can you apply in your city? The IUCN Urban Toolbox is a catalogue of tools that can help to conserve #urbanbiodiversity. Consult the Decision Key and discover how to support the #naturepositive development of your city!

Learn more: bit.ly/3swYXPu

IUCN

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Wed Nov 15 1030 UTC: A Gale Warning is in effect for the Atlantic High Seas and the Gulf of Mexico. More info: hurricanes.gov/text/MIAHSFAT…

NHC_TAFB

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Watch the press conference with @WMOUNHQ Petteri Taalas at 1000 GMT live on @UNWebTV media.un.org/en/asset/k1a/k1…

WMO issues its annual #GreenhouseGas Bulletin on atmospheric levels of heat-trapping gases which are driving #climatechange.
15 November at 1000 GMT.
Stay tuned. - World Meteorological Organization

World Meteorological Organization

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Wed Nov 15 1030 UTC: A Gale Warning is in effect for portions of the eastern North Pacific. More info: hurricanes.gov/text/MIAHSFEP…

NHC_TAFB

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RT @GreenpeaceEU: Days after a huge climate march in Amsterdam, the Dutch government drops plan to cap the number of flights at Schiphol airport, one of EU's busiest

EU Commissioner & aviation zealot @AdinaValean reportedly threatened The Hague for its plan to reduce noise pollution and emissions

We zijn teleurgesteld dat minister Harbers de krimp van #Schiphol opschort. Er staat zoveel op het spel. Omwonenden worden in de steek gelaten en het klimaat wordt verder opgestookt. 🧵1/6
#peoplevspolluters
Foto: © Marten van Dijl / Greenpeace - Greenpeace Nederland

Greenpeace International

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Heatwaves. Wildfires. Floods. Storms.

Around the world, climate change is fueling more extreme weather events.

We want real progress at #COP28, the 🇪🇺 &🌍 coming together to #ActNow.

Join our #EUatCOP28 side events and be part of the discussion.

➡️cop28eusideevents.eu/e/home

EU Climate Action

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RT @UNEP: Human rights cannot be enjoyed without a safe, clean, and healthy environment. Sustainable environmental governance, in turn, cannot exist without the establishment of and respect for human rights.

More on why environmental rights and governance matter:

ipbes

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Plastic pollution is not just a waste management issue.

As countries meet at #INC3 to negotiate a global #PlasticsTreaty, find out how plastic pollution contributes to the climate crisis: ow.ly/AgSE50Q7jJG

UNDP Climate

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RT @LIFEprogramme: #ClimateChange is fueling more frequent and extreme weather events🌍

This is why the #EU is leading #ClimateAction at home and abroad!

And pushing for real progress at #COP28💪

Join #EUatCOP28 👉cop28eusideevents.eu/e/home

EU Climate Action

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11/15 - Low pressure over the north-central Gulf of Mexico is producing scattered showers and isolated t'storms. Strong to #gale-force easterly winds and #seas to 13 ft are occurring in the N and NE Gulf waters. More info at hurricanes.gov/marine #marinewx #GOESEast

NHC_TAFB

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Climate change mitigation benefits of protected areas are vast as intact ecosystems can sequester approx. 6️⃣0️⃣% of global anthropogenic emissions each year.

Conserve, protect and restore! 🌎

Learn more ➡️ eu1.hubs.ly/H063Brt0

UNEP-WCMC

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Potsdam researchers amongst top 1% most cited worldwide: For the sixth year in a row, numerous researchers from #PIK are among the top 1 percent of the renowned @Clarivate ranking “Highly Cited Researchers” worldwide. Congratulations! 👏💐 pik-potsdam.de/en/news/lates…

Potsdam Institute for Climate Impact Research PIK

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Greenhouse Gas levels in the atmosphere have reached record levels. Again.
This will continue to trap heat and drive #climatechange for many years, with more extreme weather, sea level rise and many other impacts on our planet. #COP28 #StateofClimate bit.ly/3QHCEyJ

World Meteorological Organization

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🚯 The true cost of plastic isn't its cheap price tag – it's the toll it takes on our planet & communities in vulnerable situations.

Decision-makers: support a fair and ambitious treaty to solve this crisis now!

✊🏽 #StopPlasticPollution: BanIt.org #INC3

WWF

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What do we mean when we say change the system, not the climate?

We’ve teamed up with @weall_alliance to make this handy explainer. More info and examples of how people around the world are rewiring our economies at weall.org/systemschange #WellbeingEconomy #AlternativeFutures

Greenpeace International

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RT @pbesnl: Do you want to help @IPBES further elevate Indigenous & local knowledge (#ILK) in science-policy #ForNature? Are you a Dutch (based) expert? Then we're looking for you!🌱

➡️Interested? Make sure to apply by 19 November: ipbes.net/application/ILK-ta… #Biodiversity #Ecosystem #Services

ipbes

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Climate inaction is costing lives.

⚕️ New @LancetCountdown Report calls for urgent health-centred #ClimateAction.

🗺️ #COP28 is the first COP to feature a health focus & an opportunity to highlight pathways to a healthy, net-zero future.

🔗 bit.ly/3G0ySvh

⚡ NEW REPORT ⚡

The Lancet Countdown 2023 Report underscores the imperative for a health-centred response in a world facing irreversible harms.

Read the latest assessment of the links between health and climate change: thelancet.com/journals/lance… #LancetClimate23 - The Lancet Countdown on Health and Climate Change

UN Climate Change

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Greenhouse Gas concentrations hit record high. Again.
Geneva, 15 November (WMO) - The abundance of heat-trapping greenhouse gases in the atmosphere once again reached a new record last year and there is no end in sight to the rising trend, according to a new report from the World Meteorological Organization (WMO).

Global averaged concentrations of carbon dioxide (CO2), the most important greenhouse gas, in 2022 were a full 50% above the pre-industrial era for the first time. They continued to grow in 2023.

https://ane4bf-datap1.s3-eu-west-1.amazonaws.com/wmocms/s3fs-public/ckeditor/files/Screenshot_2023-11-13_112437.jpg?pCW7CG3gnBadwJC2zLrkYz2dVJ8XvNab The rate of growth in  CO2 concentrations was slightly lower than the previous year and the average for the decade, according to WMO’s Greenhouse Gas Bulletin. But it said this was most likely due to natural, short-term variations in the carbon cycle and that new emissions as a result of industrial activities continued to rise.

Methane concentrations also grew, and levels of nitrous oxide, the third main gas, saw the highest year-on-year increase on record from 2021 to 2022, according to the Greenhouse Bulletin, which is published to inform the United Nations Climate Change negotiations, or COP28, in Dubai.

“Despite decades of warnings from the scientific community, thousands of pages of reports and dozens of climate conferences, we are still heading in the wrong direction,” said WMO Secretary-General Prof. Petteri Taalas.

“The current level of greenhouse gas concentrations puts us on the pathway of an increase in temperatures well above the Paris Agreement targets by the end of this century. This will be accompanied by more extreme weather, including intense heat and rainfall, ice melt, sea-level rise and ocean heat and acidification. The socioeconomic and environmental costs will soar.. We must reduce the consumption of fossil fuels as a matter of urgency.,” said Prof. Taalas.

Just under half of CO2 emissions remain in the atmosphere. Just over one quarter are absorbed by the ocean and just under 30% by land ecosystems like forests – although there is considerable year-to-year variability in this. As long as emissions continue, CO2 will continue accumulating in the atmosphere leading to global temperature rise. Given the long life of CO2, the temperature level already observed will persist for several decades even if emissions are rapidly reduced to net zero.

The last time the Earth experienced a comparable concentration of CO2 was 3-5 million years ago, when the temperature was 2-3°C warmer and sea level was 10-20 meters higher than now.

“There is no magic wand to remove the excess carbon dioxide from the atmosphere. But we have the tools to strengthen our understanding of the drivers of climate change through WMO’s new Global Greenhouse Gas Watch. This will greatly improve sustained observations and monitoring to support more ambitious climate goals,” said Prof. Taalas.

Global Greenhouse Gas Watch

The WMO Bulletin devotes its cover story to the Global Greenhouse Gas Watch, which was approved by the World Meteorological Congress in May. This ambitious initiative envisages sustained greenhouse gas monitoring in order to be able to account for both human activities related and natural sources and sinks. It will provide vital information and support for the Paris Agreement goal of limiting global warming to well below 2°C and aiming for 1.5°C above pre-industrial levels.

Although the scientific community has a broad understanding of climate change and its implications, there are still some uncertainties about the carbon cycle – and the fluxes in the ocean, the land biosphere and the permafrost areas.

“These uncertainties, however, must not deter action. Instead, they highlight the need for flexible, adaptive strategies and th[...]

e importance of risk management in the path to net-zero and the realization of the Paris Agreement's goals. Provision of accurate, timely, and actionable data on greenhouse gas fluxes becomes more critical,” says the Greenhouse Gas Bulletin.

It cites the need for greater information about:

* Feedback Mechanisms: The Earth's climate system has multiple feedback loops, for example, increased carbon emissions from soils or decreased carbon uptake by oceans due to changing climate as illustrated for Europe for the droughts in 2018 and 2022.
* Tipping Points: The climate system may be close to so called "tipping points", where a certain level of change leads to self-accelerating and potentially irreversible cascade of changes. Examples would include the potential rapid die-back of the Amazon rainforest, slowing of the northern ocean circulation or the destabilization of large ice sheets;
* Natural Variability: The major three greenhouse gases have substantial variability driven by natural processes superimposed on anthropogenic signal (e.g., driven by El Niño). This variability can either amplify or dampen observed changes over short periods;
* Non-CO₂ Greenhouse Gases: Climate change is driven by multiple greenhouse gases, not just CO2.  These gases have different atmospheric lifetimes, greater Global Warming Potential (GWP) than CO2 and uncertain future emissions.

The new Global Greenhouse Gas Watch is intended to be operational by 2028.

Greenhouse Gas Concentrations in 2022

The (NOAA) Annual Greenhouse Gas Index (AGGI) shows that from 1990 to 2022, the warming effect on our climate – called radiative forcing - by long-lived greenhouse gases- increased by 49%, with CO2 accounting for about 78% of this increase.

Table 1. Global annual surface mean abundances (2022) and trends of key greenhouse gases from the GAW in-situ observational network for GHG. Units are dry-air mole fractions, and uncertainties are 68% confidence limits.
CO2

CH4

N2O

2022 global mean abundance

417.9±0.2 ppm

1923±2 ppb

335.8±0.1 ppb

2022 abundance relative to 1750a

150%

264%

124%

2021–22 absolute increase

2.2 ppm

16 ppb

1.4 ppb

2021–22 relative increase

0.53%

0.84%

0.42%

Mean annual absolute increase over the past 10 years

2.46 ppm yr-1

10.2 ppb yr-1

1.05 ppb yr-1
Carbon dioxide is the single most important greenhouse gas in the atmosphere, accounting for approximately 64% of the warming effect on the climate, mainly because of fossil fuel combustion and cement production.

The 2.2 parts per million (ppm) increase in the annual average from 2021 to 2022 was slightly smaller than 2020 to 2021 and for the past decade (2.46 ppm yr). The most likely reason is increased absorption of atmospheric CO2 by terrestrial ecosystems and the ocean after several years with a La Niña event. The development of an El Niño event in 2023 may therefore have consequences for greenhouse gas concentrations.

Methane is a powerful greenhouse gas which remains in the atmosphere for about a decade.

Methane accounts for about 16% of the warming effect of long-lived greenhouse gases.

Approximately 40% of methane is emitted into the atmosphere by natural sources (for example, wetlands and termites), and about 60% comes from anthropogenic sources (for example, ruminants, rice agriculture, fossil fuel exploitation, landfills and biomass burning).

The increase from 2021 to 2022 was slightly lower than the record rate observed from 2020 to 2021 but considerably higher than the average annual growth rate over the last decade.

Nitrous Oxide is both a powerful greenhouse gas and ozone depleting chemical. It accounts for about 7% of the radiative forcing by long-lived greenhouse gases.

N2O is emitted into the atmosphere from both natural sources (approximately 60%) and anthropogenic sources (approximately 40%), including oceans, soils, biomass burning, fertilizer use, and various industrial processes.

For N2O, the increase from 2021 t[...]