Climate Change Science on Telegram by GRT: World Meteorological Organization / NASA / IPCC / ONU / OOH / UN United Nations etc.
271 subscribers
95.7K photos
21.4K videos
24 files
107K links
Download Telegram
This media is not supported in your browser
VIEW IN TELEGRAM
Heatwaves. Wildfires. Floods. Storms.

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

We want real progress at #COP28, the đŸ‡ȘđŸ‡ș &🌍 coming together to #ActNow.

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

âžĄïžcop28eusideevents.eu/e/home

EU Climate Action

Climate Change Science on Telegram by @ClimateChangeScience
A @grttme project - Other backups: @Hallotme
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

Climate Change Science on Telegram by @ClimateChangeScience
A @grttme project - Other backups: @Hallotme
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

Climate Change Science on Telegram by @ClimateChangeScience
A @grttme project - Other backups: @Hallotme
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 #COP28đŸ’Ș

Join #EUatCOP28 👉cop28eusideevents.eu/e/home

EU Climate Action

Climate Change Science on Telegram by @ClimateChangeScience
A @grttme project - Other backups: @Hallotme
This media is not supported in your browser
VIEW IN TELEGRAM
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

Climate Change Science on Telegram by @ClimateChangeScience
A @grttme project - Other backups: @Hallotme
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

Climate Change Science on Telegram by @ClimateChangeScience
A @grttme project - Other backups: @Hallotme
This media is not supported in your browser
VIEW IN TELEGRAM
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

Climate Change Science on Telegram by @ClimateChangeScience
A @grttme project - Other backups: @Hallotme
This media is not supported in your browser
VIEW IN TELEGRAM
🚯 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!

âœŠđŸœ #StopPlasticPollution: BanIt.org #INC3

WWF

Climate Change Science on Telegram by @ClimateChangeScience
A @grttme project - Other backups: @Hallotme
This media is not supported in your browser
VIEW IN TELEGRAM
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

Climate Change Science on Telegram by @ClimateChangeScience
A @grttme project - Other backups: @Hallotme
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!đŸŒ±

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

ipbes

Climate Change Science on Telegram by @ClimateChangeScience
A @grttme project - Other backups: @Hallotme
This media is not supported in your browser
VIEW IN TELEGRAM
Climate inaction is costing lives.

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

đŸ—ș #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

Climate Change Science on Telegram by @ClimateChangeScience
A @grttme project - Other backups: @Hallotme
Climate Change Science on Telegram by GRT: World Meteorological Organization / NASA / IPCC / ONU / OOH / UN United Nations etc.
Photo
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[...]
Climate Change Science on Telegram by GRT: World Meteorological Organization / NASA / IPCC / ONU / OOH / UN United Nations etc.
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

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[...]
Climate Change Science on Telegram by GRT: World Meteorological Organization / NASA / IPCC / ONU / OOH / UN United Nations etc.
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

o 2022 was higher than that observed any time before in our modern time record.

Notes for Editors

The WMO Global Atmosphere Watch Programme coordinates systematic observations and analysis of greenhouse gases and other atmospheric constituents. Greenhouse gas measurement data are archived and distributed by the World Data Centre for Greenhouse Gases (WDCGG) at the Japan Meteorological Agency.

A separate and complementary Emissions Gap Report by UN Environment will be released on 20 November. The Emissions Gap report assesses the latest scientific studies on current and estimated future greenhouse gas emissions; they compare these with the emission levels permissible for the world to progress on a least-cost pathway to achieve the goals of the Paris Agreement. This difference between “where we are likely to be and where we need to be” is known as the emissions gap.
The World Meteorological Organization is the United Nations System’s authoritative voice on Weather, Climate and Water

www.wmo.int
For further information contact:

Clare Nullis, WMO media officer, cnullis@wmo.int or media@wmo.int , Tel +41-79-7091397
Language
English

Featured Media

thumbnails_GHG.jpg

Type of news

Press Release

Publish Date

Wednesday, November 15, 2023 - 07:00

Tags

Greenhouse gases

Press Release Number

15112023

Headline
Record levels of heat-trapping gases mean further temperature increase

Carbon budget is shrinking fast

Climate change impacts include more extreme weather, sea level rise

Global Greenhouse Gas Watch will support climate action
Editorial Section

CPA

Contact

MDebray

Climate Change Science on Telegram by @ClimateChangeScience
A @grttme project - Other backups: @Hallotme
Climate Change Science on Telegram by GRT: World Meteorological Organization / NASA / IPCC / ONU / OOH / UN United Nations etc.
Photo
Les concentrations de gaz Ă  effet de serre battent des records. Une fois de plus.
GenĂšve, le 15 novembre 2023 (OMM) – Selon un nouveau rapport de l’Organisation mĂ©tĂ©orologique mondiale (OMM), les gaz Ă  effet de serre, qui piĂšgent la chaleur dans l’atmosphĂšre, ont atteint une fois de plus des niveaux record l’an dernier et la tendance Ă  la hausse n’est pas prĂšs de s’inverser.

Pour la premiÚre fois, en 2022, les concentrations moyennes mondiales de dioxyde de carbone (CO2), le gaz à effet de serre le plus important, ont dépassé de 50 % les valeurs préindustrielles. Elles ont continué à augmenter en 2023.

https://ane4bf-datap1.s3-eu-west-1.amazonaws.com/wmocms/s3fs-public/ckeditor/files/Screenshot_2023-11-13_112437.jpg?pCW7CG3gnBadwJC2zLrkYz2dVJ8XvNab

Le taux d’accroissement des concentrations de CO2 a Ă©tĂ© lĂ©gĂšrement infĂ©rieur Ă  celui de l’annĂ©e prĂ©cĂ©dente et Ă  la moyenne de la dĂ©cennie, d’aprĂšs le Bulletin de l’OMM sur les gaz Ă  effet de serre. Toutefois, l’étude prĂ©cise que cette situation est trĂšs probablement due Ă  des variations naturelles Ă  court terme du cycle du carbone et que les nouvelles Ă©missions rĂ©sultant des activitĂ©s industrielles ont continuĂ© d’augmenter.

Les concentrations de mĂ©thane (CH4) ont Ă©galement augmentĂ© et les niveaux de protoxyde d’azote (N2O), le troisiĂšme grand gaz Ă  effet de serre, ont connu entre 2021 et 2022 leur plus forte progression annuelle jamais observĂ©e, toujours selon le Bulletin sur les gaz Ă  effet de serre, lequel est destinĂ© Ă  Ă©tayer les nĂ©gociations de la COP 28, la ConfĂ©rence des Nations Unies sur le climat, qui se tiendra Ă  DoubaĂŻ.

«MalgrĂ© des dĂ©cennies d’avertissements de la part de la communautĂ© scientifique, la publication de milliers de pages de rapports et l’organisation de dizaines de confĂ©rences sur le climat, nous continuons Ă  aller dans la mauvaise direction», a dĂ©clarĂ© le SecrĂ©taire gĂ©nĂ©ral de l’OMM, M. Petteri Taalas.

«Le niveau actuel des concentrations de gaz Ă  effet de serre nous conduit vers une augmentation des tempĂ©ratures bien supĂ©rieure aux objectifs de l’Accord de Paris d’ici Ă  la fin du siĂšcle. Les conditions mĂ©tĂ©orologiques deviendront plus extrĂȘmes: chaleur intense et fortes prĂ©cipitations, fonte des glaces, Ă©lĂ©vation du niveau de la mer et rĂ©chauffement et acidification des ocĂ©ans. Nous assisterons Ă  une flambĂ©e des coĂ»ts socio-Ă©conomiques et environnementaux. Il est urgent de rĂ©duire la consommation de combustibles fossiles», a soulignĂ© M. Taalas.

Un peu moins de la moitiĂ© des Ă©missions de CO2 demeure dans l’atmosphĂšre. Un peu plus d’un quart d’entre elles est absorbĂ© par les ocĂ©ans et un peu moins de 30 % par les Ă©cosystĂšmes terrestres tels que les forĂȘts, bien que la variabilitĂ© interannuelle soit considĂ©rable dans ce domaine. Tant que les Ă©missions se poursuivront, le CO2 continuera Ă  s’accumuler dans l’atmosphĂšre et Ă  gĂ©nĂ©rer une hausse de la tempĂ©rature mondiale. Étant donnĂ© la durĂ©e de vie du CO2, le rĂ©chauffement dĂ©jĂ  observĂ© persistera pendant plusieurs dĂ©cennies, mĂȘme si les Ă©missions nettes sont rapidement rĂ©duites Ă  zĂ©ro.

La derniĂšre fois que la Terre a connu une teneur comparable en CO2, il y a 3 Ă  5 millions d’annĂ©es, la tempĂ©rature Ă©tait alors de 2 Ă  3 °C plus Ă©levĂ©e qu’aujourd’hui et le niveau de la mer excĂ©dait de 10 Ă  20 mĂštres le niveau actuel.

«Il n’y a pas de baguette magique pour faire disparaĂźtre l’excĂšs de dioxyde de carbone de l’atmosphĂšre. Toutefois, grĂące Ă  la Veille mondiale des gaz Ă  effet de serre, rĂ©cemment créée par l’OMM, nous disposons des outils nĂ©cessaires pour mieux comprendre les facteurs du changement climatique. Cette initiative permettra d’amĂ©liorer considĂ©rablement et durablement la surveillance et les observations, Ă  l’appui d’objectifs climatiques plus ambitieux», a expliquĂ© M. Taalas.

Veille mondial des gaz Ă  effet de serre

Le Bulletin de l’OMM consacre son article [...]
Climate Change Science on Telegram by GRT: World Meteorological Organization / NASA / IPCC / ONU / OOH / UN United Nations etc.
Les concentrations de gaz Ă  effet de serre battent des records. Une fois de plus. GenĂšve, le 15 novembre 2023 (OMM) – Selon un nouveau rapport de l’Organisation mĂ©tĂ©orologique mondiale (OMM), les gaz Ă  effet de serre, qui piĂšgent la chaleur dans l’atmosphĂšre

de couverture Ă  la Veille mondiale des gaz Ă  effet de serre, dont la crĂ©ation a Ă©tĂ© approuvĂ©e par le CongrĂšs mĂ©tĂ©orologique mondial en mai dernier. Cette initiative ambitieuse prĂ©voit une surveillance continue des gaz Ă  effet de serre afin de pouvoir comptabiliser tant les sources et les puits naturels que ceux liĂ©s aux activitĂ©s humaines. Elle permettra d’obtenir des informations essentielles pour atteindre les objectifs de l’Accord de Paris, qui sont de contenir l’augmentation de la tempĂ©rature moyenne mondiale nettement en dessous de 2 °C par rapport aux niveaux prĂ©industriels tout en continuant d’Ɠuvrer pour la limiter Ă  1,5 °C.

La communautĂ© scientifique connaĂźt bien le changement climatique et ses implications, mais le cycle du carbone et les flux correspondants dans les ocĂ©ans, la biosphĂšre terrestre et les zones de pergĂ©lisol n’ont pas encore livrĂ© tous leurs secrets.

Selon le Bulletin sur les gaz Ă  effet de serre, ces incertitudes ne doivent cependant pas nous dissuader d’agir. Au contraire, elles mettent en valeur la nĂ©cessitĂ© de concevoir des stratĂ©gies flexibles pouvant ĂȘtre adaptĂ©es, ainsi que l’importance de la gestion des risques pour parvenir Ă  rĂ©duire Ă  zĂ©ro les Ă©missions nettes et atteindre les objectifs de l’Accord de Paris. Ainsi, il devient de plus en plus fondamental de disposer sans dĂ©lai de donnĂ©es prĂ©cises et exploitables sur les flux de gaz Ă  effet de serre.

Le Bulletin sur les gaz Ă  effet de serre mentionne la nĂ©cessitĂ© de disposer de davantage d’informations dans les domaines suivants:

* MĂ©canismes de rĂ©troaction: Le systĂšme climatique de la Terre comporte de multiples boucles de rĂ©troaction, par exemple l’augmentation des Ă©missions de carbone par les sols ou la diminution de l’absorption du carbone par les ocĂ©ans en raison du changement climatique, comme cela s’est produit en Europe lors des sĂ©cheresses de 2018 et 2022.
* Points de bascule: Le systĂšme climatique pourrait ĂȘtre proche de ce que l’on appelle des «points de bascule», Ă  savoir des situations oĂč un certain degrĂ© de changement entraĂźne une cascade de modifications auto-accĂ©lĂ©rĂ©es et potentiellement irrĂ©versibles. On peut citer comme exemples les possibilitĂ©s de dĂ©pĂ©rissement rapide des cimes de la forĂȘt amazonienne, de ralentissement de la circulation ocĂ©anique septentrionale ou encore de dĂ©stabilisation de grandes nappes glaciaires.
* Variabilité naturelle: Les trois principaux gaz à effet de serre présentent une variabilité importante due à des processus naturels qui se superposent au signal anthropique (comme le phénomÚne El Niño). Cette variabilité peut amplifier ou atténuer les changements observés sur de courtes périodes.
* Gaz Ă  effet de serre autres que le CO₂: Le changement climatique est dĂ» Ă  plusieurs gaz Ă  effet de serre, et pas seulement au CO2. Ces gaz prĂ©sentent des durĂ©es de vie diffĂ©rentes dans l’atmosphĂšre, un potentiel de rĂ©chauffement global supĂ©rieur Ă  celui du CO2 et des Ă©missions futures difficiles Ă  quantifier.

La Veille mondiale des gaz Ă  effet de serre devrait ĂȘtre opĂ©rationnelle d’ici Ă  2028.

Concentrations de gaz Ă  effet de serre en 2022

Selon l’indice annuel d’accumulation des gaz Ă  effet de serre dans l’atmosphĂšre (AGGI), publiĂ© par l’Administration amĂ©ricaine pour les ocĂ©ans et l’atmosphĂšre (NOAA), sous l’effet des gaz Ă  effet de serre persistants, le forçage radiatif de l’atmosphĂšre, qui induit un rĂ©chauffement du systĂšme climatique, s’est accru de 49 % entre 1990 et 2022, le CO2 contribuant pour quelque 78 % Ă  cette augmentation.

Tableau 1. Concentrations moyennes annuelles Ă  la surface du globe (en 2022) et Ă©volution des principaux gaz Ă  effet de serre, d’aprĂšs les donnĂ©es transmises par le rĂ©seau d’observation in situ relevant de la Veille de l’atmosphĂšre globale. Les valeurs sont exprimĂ©es en fractions molaires d’air sec et les incertitudes correspondent Ă  un intervalle de confiance de 68 %.
CO2

CH4

N2O

Concentration moyenne mondiale
en 2022

417,9 ± 0,2 ppm

1 923 ± 2 ppb

335,8 ± 0,1 ppb

Concentration en[...]