69 Matching Annotations
  1. Last 7 days
  2. Nov 2024
  3. Oct 2024
    1. 2023 haben Böden und Landpflanzen fast kein CO2 absorbiert. Dieser Kollaps der Landsenken vor allem durch Dürren und Waldbrände wurde in diesem Ausmaß kaum vorausgesehen, und es ist nicht klar, ob auf ihn eine Regeneration folgt. Er stellt Klimamodelle ebenso in Frage wie die meisten nationalen Pläne zum Erreichen von CO2-Neutralität, weil sie auf natürlichen Senken an Land beruhen. Es gibt Anzeichen dafür, dass die steigenden Temperaturen inzwischen auch die CO2-Aufnahmefähigkeit der Meere schwächen. Überblicksartikel mit Links zu Studien https://www.theguardian.com/environment/2024/oct/14/nature-carbon-sink-collapse-global-heating-models-emissions-targets-evidence-aoe

  4. Sep 2024
    1. Daten sprechen dafür, dass die Eisfläche um die Antarktis in diesem antarktischen Sommer noch mehr schrumpft als 2023. Am 7. September war die von Eis bedeckte Fläche kleiner als vor einem Jahr. Forschende sehen darin ein Anzeichen dafür, dass das ganze antarktische System in einen anderen Zustand übergegangen ist, weil sich die erhöhten Lufttemperaturen jetzt auch auf den Ozean auswirken. Zu den Folgen gehören Veränderungen der Strömungen und ein schnelleres Abschmelzen der antarktischen Gletscher. https://www.theguardian.com/world/article/2024/sep/10/two-incredible-extreme-events-antarctic-sea-ice-on-cusp-of-record-winter-low-for-second-year-running

  5. Aug 2024
    1. for - climate change impacts - marine life - citizen-science - potential project - climate departure - ocean heating impacts - marine life - marine migration - migrating species face collapse - migration to escape warming oceans - population collapse

      main research findings - Study involved 146 species of temperate or subpolar fish and 2,572 time series - Extremely fast moving species (17km/year) showed large declines in population while - fish that did not shift showed negligible decline - Those on the northernmost edge experienced the largest declines - There is speculation that the fastest moving ones are the also the one's with the least evolutionary adaptations for new environments

  6. May 2024
  7. Apr 2024
  8. Feb 2024
  9. Jan 2024
    1. Zusammenfassender Artikel über Studien zu Klimafolgen in der Antarktis und zu dafür relevanten Ereignissen. 2023 sind Entwicklungen sichtbar geworden, die erst für wesentlich später in diesem Jahrhundert erwartet worden waren. Der enorme und möglicherweise dauerhafte Verlust an Merreis ist dafür genauso relevant wie die zunehmende Instabilität des westantarktischen und möglicherweise inzwischen auch des ostantarktischen Eisschilds. https://www.theguardian.com/world/2023/dec/31/red-alert-in-antarctica-the-year-rapid-dramatic-change-hit-climate-scientists-like-a-punch-in-the-guts

  10. Dec 2023
      • annotate
      • for: James Hansen - interview - Paul Beckwith, Global warming in the pipeline

      • Summary

        • Paul discusses James Hansen's most recent, and controversial paper:
        • with guest James Hansen
        • the paper claims that IPCC protective are far too conservative
        • Micheal Mann fort I've, disagrees with it:
          • a
  11. Nov 2023
    1. Jedes Zehntel Grad weiterer Temperaturerhöhung drängt 140 Millionen Menschen - vor allem in ärmeren Regionen - aus der sogenannten Klimatische, in der Menschen gut leben können. Forschende haben genau berechnet, wie viele Menschen bei verschiedenen Klimaszenarien in so heißen Gebieten leben würden, dass sie mit hoher Wahrscheinlichkeit zur Emigration gezwungen werden. Bei dem derzeit wahrscheinlichen 2,7 Grad-Szenario für 2100 wären das bis 2030 ca 2 Milliarden Menschen, bei einem 1,5 Gra-Pfad 400 Millionen. Auch in den nicht ganz so heißen Gebieten wird die Zahl der Extremwetterereignisse weiter zunehmen. https://www.theguardian.com/environment/2023/may/22/global-heating-human-climate-niche

  12. Sep 2023
  13. Aug 2023
    1. Auf Z. Hausfather gestützt, wird festgestellt, dass sich die Temperaturerhöhung des Nordatlantik nicht durch die Ursachen wie weniger Saharastaub und Schiffs-Aerosole allein erklären lässt, sondern sie auf den anthropogenen Klimawandel zurückzuführen ist. Infografiken:<br /> - Temperaturanomalie Ozeanoberflächen, - Durchschnittstemperatur der Ozeanoberfläche, - Prognosen Temperaturentwicklung der Ozeane vs. beobachteten Werten - Energieaufnahme der Ozeane.

      https://www.nytimes.com/interactive/2023/08/03/climate/ocean-temperatures-heat-earth.html

  14. Jul 2023
    1. In einem - leider kostenpflichtigen, aber über Blende zugänglichen - Interview äußert sich die britische Klimaforscherin Helen Hewitt zu den Rekordtemperaturen, die in den letzten Monaten in den Weltmeeren gemessen worden, und zum Rückgang des antarktischen Meereises. Sie weist darauf hin, dass noch unverstanden ist, wie es genau zu den großen Anomalien gekommen ist. Die obersten zwei Meter der Ozeane nehmen 90% der zusätzlichen Energie auf, die durch die von Menschen imitierten Treibhausgase im Erdsystem bleibt.

      https://www.sueddeutsche.de/projekte/artikel/wissen/klimakrise-daten-ozeane-e370703/?reduced=true

  15. Jun 2023
    1. It was partly through their attempts to understand what caused and ended previous ice ages that climate scientists came to understand the dominant role that carbon dioxide plays in Earth’s climate system, and the role it is playing in current global warming.

      claim

  16. May 2023
  17. Apr 2023
    1. Die Oberflächentemperaturen der Ozeane haben im April einen neuen allzeitrekord erreicht noch nie in der aufgezeichneten Geschichte haben sich die Temperaturen so schnell und so stark erhöht wie im Augenblick. Es gibt deutliche Anzeichen für ein starkes El Niño-Phänomen in diesem Jahr und Vermutungen, dass deshalb die 1,5 Grad-Grenze schon im kommenden Jahr überschritten werden wird. https://www.bbc.com/news/science-environment-65339934

  18. Feb 2023
    1. In its 2013 fifth assessment report, the IPCC stated in its summary for policymakers that it is “extremely likely that more than half of the observed increase in global average surface temperature” from 1951 to 2010 was caused by human activity. By “extremely likely”, it meant that there was between a 95% and 100% probability that more than half of modern warming was due to humans.

      This website is creating the argument using reports by the IPCC stating that its extremely likely that 95% to 100% that more than half modern global warming was caused by humans. This is infact false information or "misinformation" because there are many scientific studies that prove that global warming is a natural process and is not caused by humans

  19. Jan 2023
  20. Jul 2022
    1. So the first transition, they say, was about 10,500 years ago with the beginning of agriculture. Some have said farming was our biggest mistake: it supported more of us, but at the cost of more disease, poor nutrition, grinding labour, and hierarchical societies that turned into warring empires. But we gained more energy from domesticating animals, and more information by the invention of writing. “Serendipitously,” the authors write, “farming created environmental conditions across our home planet that were unusually stable. This gave time for large-scale civilizations to develop.” That is, humans launched global warming not in the 1800s but with the first agriculture. By burning off forests to make farmland, we began to pump carbon dioxide into the atmosphere — coincidentally, just as the earth was moving on schedule back into another glacial period. Over the next few thousand years farming spread across Asia, Africa, Europe, and much of the Americas, keeping the planet just a little too warm for a return of the glaciers.

      First transition The authors make an extraordinary claim that the Holocene not only coincided with the beginnings of agriculture, but that humans, in large scale burning of forests to create agricultural fields released sufficient quantities of CO2 emissions from the burning to prevent the coming of the next ice age!

      Do a literature review to see if there is evidence for such an extraordinary claim.

  21. Jun 2022
    1. dire warning

      Really? What's the dire warning? Whatever creatures dominated at the time of the warm period flourished and expanded their ranges. Even now, humanity flourishes most in warmer places (http://www.luminocity3d.org/WorldPopDen/#3/12.00/10.00).

      Contrary to the climate alarmist suggestion that warming should be stopped, the study shows that a warmer Earth has been the norm - and when it was, life of all kinds flourished.

      That's the opposite of a "dire warning" to any sensible person.

      But if people wake up to the scientific reality, why would anyone want to pay scientists to come up with ways to keep us trapped in the ice age we've been in for most of human history?

  22. Sep 2021
    1. Since about 70% of water delivered from the Colorado River goes to growing crops, not to people in cities, the next step will likely be to demand large-scale reductions for farmers and ranchers across millions of acres of land, forcing wrenching choices about which crops to grow and for whom — an omen that many of America’s food-generating regions might ultimately have to shift someplace else as the climate warms.

      Deep Concept: The US Government, in the 1960's/70's provided a crystal ball glimpse into the future by defining climate change (man-made global warming) as a national security concern. Various reports warned of "exponential" growth (population) and related man-made factors (technology etc.) that would contribute to climate change and specifically discussed the possibility of irreconcilable damage to "finite" natural resources.

  23. May 2021
  24. Apr 2021
    1. "Weltweit steigt mit dem Klimawandel das Risiko von extremen Regenfällen und Überschwemmungen", fasst Will Steffen von der australischen Nationaluniversität zusammen. Der Professor ist einer der führenden Klimatologen Australiens. "Die globale Durchschnittstemperatur ist bereits um etwa 1,1 Grad Celsius gestiegen. Für jeden Temperaturanstieg von einem Grad kann die Atmosphäre etwa sieben Prozent mehr Wasser aufnehmen", so Steffen
  25. Mar 2021
    1. Manmade CO2 Does Not Cause Measurable Warming

      Actually, CO2 does cause measurable warming. The warming effect is not huge, and not worrisome, but it is not zero, and it is large enough to be measurable.

      There really is no question about the fact that the Earth's average temperature has warmed slightly, as CO2 levels have risen, over the last six decades. The magnitude of that change is debatable: different "global" composite temperature indices vary in their measured trend by approximately a factor of two. But none of them show zero trend.

      https://sealevel.info/GISS_vs_UAH_and_HadCRUT_1958-2018_woodfortrees_annot2.png

      The "climate sensitivity" of the Earth's temperatures to changes in CO2 level can be estimated by careful comparison of measured temperatures to measured CO2 levels. Here's an example on my web site, showing how that can be done:

      https://sealevel.info/sensitivity.html

      Climate change is a highly politicized issue, so, as is the case for any politicized issue, if you want to understand it you need to seek out balanced information. If you want to learn about the SCIENCE of climate change, instead of political spin, here's a list of resources which can help:

      https://tinyurl.com/learnmore4

      It has:

      ● accurate introductory climatology information

      ● in-depth science from BOTH skeptics & alarmists

      ● links to balanced debates between experts on BOTH sides

      ● information about climate impacts

      ● links to the best blogs on BOTH sides of the issue

  26. Feb 2021
  27. Jan 2021
    1. Scientists at Lawrence Livermore National Laboratory in collaboration with colleagues from Nanjing University and Texas A&M University have re-evaluated how much future global warming is in the pipeline if atmospheric greenhouse gas concentrations were to remain fixed at present-day levels, a quantity known as committed warming. Their new analysis accounts for the fact that surface warming to date has been large in certain regions but small in others, which has temporarily allowed Earth to shed heat more efficiently. Ignoring this “pattern effect”, as has been done in previous studies, gives the false impression that Earth’s energy budget is nearly balanced and implies that committed warming is only about 1.3°C (2.3°F) above pre-industrial levels. The team’s updated estimate is substantially larger, with a most likely value of 2.3°C (4.1°F). 
    1. Our planet’s energy balance is sensitive to spatial inhomogeneities in sea surface temperature and sea ice changes, but this is typically ignored in climate projections. Here, we show the energy budget during recent decades can be closed by combining changes in effective radiative forcing, linear radiative damping and this pattern effect. The pattern effect is of comparable magnitude but opposite sign to Earth’s net energy imbalance in the 2000s, indicating its importance when predicting the future climate on the basis of observations. After the pattern effect is accounted for, the best-estimate value of committed global warming at present-day forcing rises from 1.31 K (0.99–2.33 K, 5th–95th percentile) to over 2 K, and committed warming in 2100 with constant long-lived forcing increases from 1.32 K (0.94–2.03 K) to over 1.5 K, although the magnitude is sensitive to sea surface temperature dataset. Further constraints on the pattern effect are needed to reduce climate projection uncertainty.
    1. Bericht über eine Fernsehsendung mit Michael Mann, bei der es insbesondere darum geht, dass ein rascher stop der CO2 Emissionen schon in wenigen Jahren dazu führen kann, dass sich die globale Erhitzung nicht länger fortsetzt.

    1. The widespread idea that decades, or even centuries, of additional warming are already baked into the system, as suggested by previous IPCC reports, were based on an “unfortunate misunderstanding of experiments done with climate models that never assumed zero emissions.” 
    1. The severity of damaging human-induced climate change depends not only on the magnitude of the change but also on the potential for irreversibility.
    1. The Zero Emissions Commitment (ZEC) is the change in global mean temperature expected to occur following the cessation of net CO2 emissions and as such is a critical parameter for calculating the remaining carbon budget. The Zero Emissions Commitment Model Intercomparison Project (ZECMIP) was established to gain a better understanding of the potential magnitude and sign of ZEC, in addition to the processes that underlie this metric. A total of 18 Earth system models of both full and intermediate complexity participated in ZECMIP. All models conducted an experiment where atmospheric CO2 concentration increases exponent
  28. Sep 2020
  29. Aug 2020
  30. Jul 2020
  31. Jan 2020
    1. Or global warming. I can’t see or touch it. What I can see and touch are these raindrops, this snow, that sunburn patch on the back of my neck. I can touch the weather. But I can’t touch climate. So someone can declare: “See! It snowed in Boise, Idaho, this week. That means there’s no global warming!” We can’t directly see global warming, because it’s not only really widespread and really really long-lasting (100,000 years); it’s also super high-dimensional. It’s not just 3-D. It’s an incredibly complex entity that you have to map in what they call a high-dimensional- phase space: a space that plots all the states of a system. In so doing, we are only following the strictures of modern science, laid down by David Hume and underwritten by Immanuel Kant. Science can’t directly point to causes and effects: That would be metaphysical, equivalent to religious dogma. It can only see correlations in data. This is because, argues Kant, there is a gap between what a thing is and how it appears (its “phenomena”) that can’t be reduced, no matter how hard we try. We can’t locate this gap anywhere on or inside a thing. It’s a transcendental gap. Hyperobjects force us to confront this truth of modern science and philosophy.

      A short, and very cogent argument here.

    1. The strategy would focus on vigorous range management, soil and water conservation including tree-planting, limiting over-grazing and preventing deforestation. Improving water availability would also require additional construction of surface dams during rainy seasons and deep wells.

      solutions

    2. The primary causes of desertification in Somaliland include, among other things, deforestation, over-grazing and mismanagement of land and the environment as well as soil erosion, all of which have damaging effects on farmland and rangeland. Drought, considered as a cyclical phenomenon generally refers to rains failing for a long period of time which accelerates desertification and drastic reduction of water. Drought, is more compounded nowadays, by global climate change.

      a more complex explanation of desertification in Somalia

    1. Rehabilitation and restoration approaches can help restore ecosystem services that have been lost due to desertification.

      desertification - prevention and restoration

    1. (Through interpreter) Definitely there is a change. We used to count on the rainy season and the dry seasons. Now it's not normal. It has changed. We hear on the radios that in the West and in industrialized countries, there is a lot of pollution in the atmosphere.

      relationship between drought and global warming - Somali perspective

  32. Sep 2019
    1. Table 2.2:

      IPCC Special Report on Global Warming of 1.5 °C - Table 2.2: The assessed remaining carbon budget and its uncertainties

  33. Mar 2019
    1. According to the analysis, urban areas were found to be relatively cooler than the surrounding non-urban areas during heat waves. At 44.5°C, the non-urban areas were warmer than urban areas (43.7°C). However, during the night, all urban areas were hotter than the surrounding non-urban areas.

      Urban heat island effect

    1. Most strikers want their governments to aggressively cut their greenhouse gas emissions. Some youngsters are even demanding a lower voting age, so they can have a bigger say in political process. They want a safe future, powered by the wind and the sun, not dirty and dangerous coal and gas. For instance in Australia, students are urging politicians to move beyond fossil fuel projects, with the hashtag #StopAdani trending. The fear is that the coal mine project will damage water and the reefs.

      More power to you!

  34. Jan 2019
    1. . The power of glaciation and climate in shaping movement, lifestyle,and innovation cannot be underestimated

      really off topic but makes me think of global warming and how our present actions can have huge, tangible consequences

  35. Mar 2018
    1. As global temperatures rise, warmer oceans are expected to fuel stronger hurricanes, with disastrous consequences.

      Here is a sample annotation.

  36. Oct 2017
    1. ‘Truly it would seem as if “Man strews the earth with ruin.”4 But this conclusion is too flattering to human vanity. Man's most permanent memorial is a rubbish-heap, and even that is doomed to be obliterated’ (Sherlock, 1922, p. 343

      CO2 atmospheric concentration used as simple indicator for many years to track great acceleration / progression in Anthropocence, this now joined by long list of other indicators, escalating at an alarming rate, population, water use/ shortage, paper consumption, global warming, increase in number and ferocity of storms .......

    2. In 1873, the Italian geologist and priest Antonio Stoppani suggested that our technologies, infrastructures, and patterns of land use had created fundamental changes in Earth’s systems, propelling us into what he called an ‘anthropozoic era’

      Note : Read over Article again by Will Steffen, Paull J Crutzen & John R McNeill. [] (https://www.pik-potsdam.de/news/public-events/archiv/alter-net/former-ss/2007/05-09.2007/steffen/literature/ambi-36-08-06_614_621.pdf)

      Explore development of Anthropocence. How do we track progression of Anthropocene? CO2 Emissions??

  37. Aug 2015
    1. The right-wing base has a coherent position on climate change: It's a hoax, so we shouldn't do anything about it. The left-wing base has a coherent position: It's happening, so we should do something about it. The "centrist" position, shared by conservative Democrats and the few remaining moderate Republicans, is that it's happening but we shouldn't do anything about it. That's not centrist in any meaningful ideological sense; instead, like most areas of overlap between the parties, it is corporatist.

      The worst possible outcome.