Path: ...!eternal-september.org!feeder2.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Robert Carnegie Newsgroups: rec.arts.sf.written Subject: Re: AGW. LNG Worse Than Coal. Date: Thu, 7 Nov 2024 13:28:45 +0000 Organization: A noiseless patient Spider Lines: 58 Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Injection-Date: Thu, 07 Nov 2024 14:28:47 +0100 (CET) Injection-Info: dont-email.me; posting-host="6ac19c9499ef251453a147d60989d65c"; logging-data="2819086"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+UXIJOCD47S4Kuk5aJkerXHcjbId78NO8=" User-Agent: Mozilla Thunderbird Cancel-Lock: sha1:nb6UmH8LDDqWKXoYzQFdNiFlmzo= In-Reply-To: Content-Language: en-GB Bytes: 3411 On 05/11/2024 01:13, Cryptoengineer wrote: > On 11/4/2024 4:34 PM, Robert Carnegie wrote: >> On 30/10/2024 01:37, Cryptoengineer wrote: >>> I'd like to see some numbers on this. >>> >>> Yes, burning methane generates less CO2 per BTU than >>> methane. >>> >>> But: >>> >>> A significant amount of methane escapes the system in leaks >>> and gets into the atmosphere without being burnt. In the US, >>> about 1.4%. Other countries do much worse, and a recent satellite >>> has started mapping the problem: >>> >>> https://www.msn.com/en-us/money/other/nasa-s-methane-satellite-just- >>> mapped-its-first-plumes/ar-AA1spd3X?ocid=BingNewsSerp >>> >>> Coal that 'leaks' out of the system just sits on the ground. >>> >>> AND >>> >>> Methane, molecule for molecule, is a far more potent greenhouse >>> gas than CO2. 120x as potent, in fact. >>> >>> This is mitigated by the fact that methane only  lasts about 10 >>> years in the atmosphere, while CO2 lasts far longer. >>> >>> https://www.epa.gov/ghgemissions/understanding-global-warming-potentials >>> >>> So, I'd like to see some actual numbers to support of debunk this >>> claim, not a simple declaration. >> >> I understand that methane in the sky is slowly >> converted to CO2. > > Yes, and far faster then CO2 gets recycled. But it's also a far > more portent as a greenhouse gas, pound for pound, as C02. Numbers > matter, and figuring out the relative contribution of each to > warming \caused is a non-trivial calculation. I wanted to make the point that the increase of methane in the atmosphere means that CO2 in the atmosphere increases as well. Another thing - I heard an argument, which may be completely wrong, or even right but irrelevant, that a certain level of CO2 blocks heat radiation from,the surface by about 100% at relevant infrared wavelengths. That seems to imply that more CO2 stops getting worse then - however, it may be enough to remove humans ultimately as owners of the Earth, and also of course it makes getting CO2 down to a tolerable value that much harder. I'm bringing it up because... does CH4 affect other wavelengths of heat radiation which are passed through by CO2? So that it makes a possible "couldn't be worse" CO2 situation, worse?