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Posted
  • Location: Colchester, Essex, UK (33m ASL)
  • Location: Colchester, Essex, UK (33m ASL)

    We are likely to see a push by govts towards blue hydrogen, but is it any better? Not according to this article, in fact could be worse. 

    file-20210812-27-1u7gvf1.jpg?ixlib=rb-1.
    THECONVERSATION.COM

    Hydrogen fuel derived from natural gas may be worse for the climate than the fossil fuel even with carbon capture and storage.

     

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    Posted
  • Location: Beccles, Suffolk.
  • Weather Preferences: Thunder, snow, heat, sunshine...
  • Location: Beccles, Suffolk.

    I do love the closing sentence: 'What is certain is that blue hydrogen may not be as green as it once appeared.' 😁

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    Posted
  • Location: Colchester, Essex, UK (33m ASL)
  • Location: Colchester, Essex, UK (33m ASL)

    Following on from my last post, the BBC today reporting on the govt saying how the hydrogen industry could create thousands of jobs, that it's zero-emission fuel. 

    Using hydrogen is zero-emission, it creates water, but producing hygrogen isn't, a process which could create worse greenhouse gas emissions than just using natural gas. 

    No doubt blue hydrogen will be claimed to be the saviour by govts, many are investing heavily already, but its an illusion unless they can solve the emissions caused in its production. 

    Second link is to a new scientific publication on the various forms of production of hydrogen. 

    _113172969_untitled.png
    WWW.BBC.CO.UK

    Kick-starting a hydrogen industry could attract billions in investment, the UK government says.

     

     
    ONLINELIBRARY.WILEY.COM

    If above link does not work, here is the text form.. 

    https://onlinelibrary.wiley.com/doi/10.1002/ese3.956

     

    Edited by SnowBear
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    Posted
  • Location: N.E. Scotland South Side Moray Firth 100m asl
  • Location: N.E. Scotland South Side Moray Firth 100m asl
    On 09/08/2021 at 23:00, Northernlights said:

    Don"t fully understand the complexities of burning jet fuel but a lot of energy must be used up  to escape earths gravitation even using lift from the wings. At the last normal  count there were 283000 aircraft in the sky at any one time(2019) What I find difficult to understand is that they blame cattle for release of a lot of greenhouse gas.Well in my neck of the woods the number of cattle has rapidly decreased since the 1960s and we are now about 40% of those numbers with only two of neighbouring 9 farms still holding cattle. I am sure the the number of aircraft has not decreased by 60% since the 1960s. Fail to see how cattle are a major problem with their numbers decreasing all the time .

    Its often quoted that the methane produced by cattle is a much more potent greenhouse gas but read the other day that is broken down in ten years in the atmosphere whereas CO2 never breaks down and just accumulates.Perhaps a chemist on here can correct me if I am wrong.

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    Posted
  • Location: Colchester, Essex, UK (33m ASL)
  • Location: Colchester, Essex, UK (33m ASL)
    file-20210817-18-ul5ri9.jpg?ixlib=rb-1.1
    THECONVERSATION.COM

    The UK government claims hydrogen could meet one-third of the country’s energy demand by 2050.

     

     

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    Posted
  • Location: Camborne
  • Location: Camborne

    Changing El Niño–Southern Oscillation in a warming climate

    Abstract

    Originating in the equatorial Pacific, the El Niño–Southern Oscillation (ENSO) has highly consequential global impacts, motivating the need to understand its responses to anthropogenic warming. In this Review, we synthesize advances in observed and projected changes of multiple aspects of ENSO, including the processes behind such changes. As in previous syntheses, there is an inter-model consensus of an increase in future ENSO rainfall variability. Now, however, it is apparent that models that best capture key ENSO dynamics also tend to project an increase in future ENSO sea surface temperature variability and, thereby, ENSO magnitude under greenhouse warming, as well as an eastward shift and intensification of ENSO-related atmospheric teleconnections — the Pacific–North American and Pacific–South American patterns. Such projected changes are consistent with palaeoclimate evidence of stronger ENSO variability since the 1950s compared with past centuries. The increase in ENSO variability, though underpinned by increased equatorial Pacific upper-ocean stratification, is strongly influenced by internal variability, raising issues about its quantifiability and detectability. Yet, ongoing coordinated community efforts and computational advances are enabling long-simulation, large-ensemble experiments and high-resolution modelling, offering encouraging prospects for alleviating model biases, incorporating fundamental dynamical processes and reducing uncertainties in projections.

    https://www.nature.com/articles/s43017-021-00199-z

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    Posted
  • Location: Camborne
  • Location: Camborne

    Heavy rainfall which led to severe flooding in Western Europe made more likely by climate change

    From the 12th to the 15th of July, heavy rainfall associated with cut-off low-pressure system “Bernd” led to severe flooding particularly in the German states North Rhine-Westphalia and Rhineland-Palatinate, as well as in Luxembourg, and along the river Meuse and some of its tributaries in Belgium and the Netherlands. 

    https://www.worldweatherattribution.org/heavy-rainfall-which-led-to-severe-flooding-in-western-europe-made-more-likely-by-climate-change/

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    Posted
  • Location: just south of Doncaster, Sth Yorks
  • Location: just south of Doncaster, Sth Yorks

    A pretty sobering assessment of the 2020 weather world-wide

    paris-skyline.jpg
    WWW.METOFFICE.GOV.UK

    The latest edition in an annual series of global climate reports shows that Europe experienced its warmest year in 2020 by a considerable amount.

     

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    Posted
  • Location: Back in Edmonton Alberta(via Chelmsford, Exeter & Calgary)
  • Location: Back in Edmonton Alberta(via Chelmsford, Exeter & Calgary)
    On 24/08/2021 at 06:44, knocker said:

    Heavy rainfall which led to severe flooding in Western Europe made more likely by climate change

    From the 12th to the 15th of July, heavy rainfall associated with cut-off low-pressure system “Bernd” led to severe flooding particularly in the German states North Rhine-Westphalia and Rhineland-Palatinate, as well as in Luxembourg, and along the river Meuse and some of its tributaries in Belgium and the Netherlands. 

    https://www.worldweatherattribution.org/heavy-rainfall-which-led-to-severe-flooding-in-western-europe-made-more-likely-by-climate-change/

    honest question ..how come every extreme weather event is more likely due to climate change? surely through balance some events will become more likely and other less likely..is like the recent 'everywhere is warming 2x times faster than everywhere else' scenario

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    Posted
  • Location: Camborne
  • Location: Camborne
    13 hours ago, knocker said:

    For a summary of the highlights, check out this article: - great graphics!

    https://www.climate.gov/news-features/understanding-climate/reporting-state-climate-2020

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    Posted
  • Location: Camborne
  • Location: Camborne

    STATE OF THE CLIMATE IN 2020 - The Arctic

    "In 2020, the Arctic annual mean surface air temperature anomaly for terrestrial areas poleward of 60°N was 2.1°C above the 1981–2010 average. This marked the highest-observed anomaly for the terrestrial Arctic since at least 1900..."

    https://journals.ametsoc.org/view/journals/bams/102/8/BAMS-D-21-0086.1.xml

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    Posted
  • Location: Camborne
  • Location: Camborne

    Warm Arctic, Cold Siberia Pattern: Role of Full Arctic Amplification Versus Sea Ice Loss Alone

    Abstract

    The effect of future Arctic amplification (AA) on the extratropical atmospheric circulation remains unclear in modeling studies. Using a collection of coordinated atmospheric and coupled global climate model perturbation experiments, we find an emergent relationship between the high-latitude 1,000–500 hPa thickness response and an enhancement of the Siberian High in winter. This wave number-1-like sea level pressure anomaly pattern is linked to an equatorward shift of the eddy-driven jet and a dynamical cooling response in eastern Asia. Additional simulations, where AA is imposed directly into the model domain by nudging, demonstrate how the sea ice forcing is insufficient by itself to capture the vertical extent of the warming and by extension the amplitude of the response in the Siberian High. This study demonstrates the importance of the vertical extent of the tropospheric warming over the polar cap in revealing the “warm Arctic, cold Siberia” anomaly pattern in future projections.

    Plain Language Summary

    Surface air temperature averaged within the Arctic Circle is rising more than twice as fast as the rate of the globally averaged temperature. This is known as “Arctic amplification” and is the result of numerous feedbacks in the Earth system. This warming is not restricted to the surface, as the temperature is also increasing at least to the middle troposphere in the Arctic. The effects of this warming on weather patterns in the midlatitudes remain uncertain in observations and model simulations. In this study, we conduct a series of climate model experiments to better understand how the vertical extent of warming in the Arctic atmosphere connects to a strengthening of the Siberian High in boreal winter. This high-pressure response leads to colder air temperatures in eastern Asia through advection. We find that climate models prescribed with only Arctic sea ice loss do not fully capture the vertical extent of warming in the atmosphere, and thus underestimate the linkage between projected Arctic amplification and Eurasian climate.

    https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020GL088583

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    Posted
  • Location: Bramley, Hampshire, 70m asl
  • Location: Bramley, Hampshire, 70m asl

    "Talented" Kiwi scientists once again at the forefront of climate change mitigation ideas!

    But is it as potty as it sounds?

    PRI_199558708.jpg
    WWW.NEWSCIENTIST.COM

    Sixteen young cows learned quickly how to urinate in a latrine, allowing their urine to be processed without producing greenhouse gases emissions

     

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    • UK Storm and Severe Convective Forecast

      UK Severe Convective & Storm Forecast - Issued 2021-09-19 10:28:59 Valid: 19/09/2021 1200 - 20/09/2021 0600 THUNDERSTORM WATCH - SUN 19TH SEPT 2021 Click here for the full forecast

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