JoNova

A science presenter, writer, speaker & former TV host; author of The Skeptic's Handbook (over 200,000 copies distributed & available in 15 languages).


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Recent comments & news

These are the latest 30 comments posted on this site on any thread:

  • Satellites show a warmer Earth is releasing extra energy to space (65)
    • Kevin Moore: Why do they put the blue sided sarking the wrong way round in the tropics?
    • Martin Clark: The problem with all this positive feedback, tropical hotspot, warmist stuff is that if ANY of it was correct, those of us who actually LIVE in the tropics (as opposed to living in more temperate climates) would already be experiencing it. It took years for architects, designers...
    • Lars P.: bobl, the sun was cooler in the past but the earth had more water. I am convinced that the oceans play a more important role then the atmosphere in setting up earth temperature. with much less landmass to lose warmth it explains the relative stable temperature of the earth with the...
    • Eddy Aruda: if net feedbacks were negative, you wouldn’t ever be able to warm the planet, and you wouldn’t have this post — there would be no satellite observations confirming that there are greater emissions to space, because the planet would not be able to warm to further at all. Let’s...
    • Axel: NASA Science News for March 22, 2012 A flurry of solar activity in early March dumped enough heat in Earth’s upper atmosphere to power every residence in New York City for two years. All this heat has since dissipated in just a few weeks. No positive feedback there then....
    • NicG.: Hi Dirk. I agree with you on the ‘killing’ ; part. As far as I am aware nobody has accused the ‘Regulating Class’ of intelligence, but even they must realise that we can’t continue to fund their lifestyles, through taxation, if we’re dead. Cheers. NicG.
    • Andrew McRae: Sphaerica I think you have misinterpreted what the word “feedback̶ 1; means in “net negative feedback”. It’s NOT saying the delta_T (change in equilibrium temperature) is negative, since that would imply (as you say) that T2 = T1 + delta_T(dQ) which if...
    • BobC: I seem to remember Ross James refering to his sources of information as “the many papers which come across my desk”. Too bad he didn’t jot down the reference information of any of them, and just relies on his memory. Ross, your rambling reminiscences are not exactly...
    • BobC: Sphaerica (Bob) April 7, 2012 at 12:32 am · Reply … One of the major and obvious negative feedbacks in the system depends on the Stefan=Boltzmann law, which says that energy emissions will increase with the fourth power of the temperature. In words, what this means that as you make...
    • BobC: MattB April 6, 2012 at 11:09 pm · Reply If more radiation is escaping to space, how can it be warming? If you have an electric stove, turn a coil on ‘high’ and hold your hand over it as it heats up. Notice that the hotter it gets, the more heat it radiates? This is negative...
    • Sonny: Hmmm this seems to reveal a fundamental lack of understanding on your part Matt B. If the suns output (for example) was to double the earths temperature would increase Even though we would be radiating more heat back into space as a result of the surface heating. Here’s an...
    • Sphaerica (Bob): If feedbacks are negative, as the Earth warms more energy will radiate away. This statement is false, and a bit confused. One of the major and obvious negative feedbacks in the system depends on the Stefan=Boltzmann law, which says that energy emissions will increase with the...
    • Eddy Aruda: Good question, Matt. The planet warmed from the 1970′s until approximately 1997. Since then, the amount of “warming” ; is so trivial as to fit nicely within the error bars. You may have noticed, assuming you read the post, that the chart covered those years when it...
    • Len: Maybe the Water Corporation have something on it. A distant cousin who is employed by the Water Corporation mentioned the lower rainfall in the recent past. I think the point being made is that there has been lower raifall about 100 years ago.
    • Eddy Aruda: I would characterize the relationship as virtually nonexistent!
    • rukidding: Thanks Len Can’t see anything on Earl Happ and Perth rainfall in the first couple of Google pages.You don’t happen to have any more specific information to Google.
    • Joe V.: Remember where most of that comes from ?
    • rukidding: So if CO2 led temperature all those years ago. What stopped runaway global warming.?
    • MattB: If more radiation is escaping to space, how can it be warming?
    • Len: A letter to the column Letters to the Editor in this week’s Farm Weekly mentioned the information. I have just rang the originator of the letter. He tells me he obtain the information from a Department of Water file HG 14. It is about the Gnangarra mound. Something about Cumulative...
    • Joe V.: I don’t think we’re suggesting it’s heat from the core that’s the source of increased energy release to space. The crust is rather a good insulator.
    • DirkH: “Obama is allegedly involved too but I suspect he is a ‘Manchurian Candidate’. Unlearn all conventional politics. These people want to kill you off.” Agreed on the Manchurian candidate. Disagree on the killing part. These days what they want is sell you more of their oil and...
    • Colin Henderson: Would you characterize the relationship between CO2 and the geological temperature record as negative ;)
    • Joe V.: Then we’re not about to spend trillions on the strength of it and of course pressures got something to do with it as well Planet Under Pressure
    • Joe V.: It’s inferred, from the observed behaviour of seismic waves and imagining it’s mostly iron. Now that might not seem a lot better than modelling, I grant you.
    • Dave: . Mallee scrub – what a shocking name for a gum tree, the real name sounds better – eucalyptus polybractea:- Watch out as this, as it is the new aviation fuel source being sort after by Virgin and QANTAS and being researched by some UNI from the UK? There’ll be huge...
  • Climate Coup — The Politics (251)
    • gai: This is a good video with a very simple illustration of how the regulating class works in the USA. http://www.youtube.c om/watch?v=su4PwZCWU dg&feature=relmf u
  • Regulators wet dreams of controling you (53)
    • Joe V.: That was a typical example of ‘carbon footprint’ being used as a proxy for something else. ie. we don’t want you because you complained about one of our doctors. A EUphemism , if you like. in much the same way that ‘elf ‘n. safety is so often invoked to...
    • Roy Hogue: We have surely elevated ourselves well above our level of competence. Dr. Lawrence Peter was right.
    • Roy Hogue: Good if you are one (radio amateur), otherwise not so good. The Internet and talk radio are where the fight will be. What do you suppose is behind the UN’s desire to control the Internet?

Recent Trackbacks:

SITE NEWS:

16 Jan 2010: I’ve added the “Social Events” link to the Navigation List on the top right to go back to the post on meetings and events. Perth event next Wednesday night. Sydney every Thursday evening. Names from France, Germany and others coming in.

August 2010: I’ve added an email support AT joannenova.com.au, that goes to all the volunteer moderators. Please use it if your comment disappears into the spam filter, or if you see an offensive comment. Thanks…

24 Nov 2010: I’ve added an option to “subscribe to comments” for people who want to get email comments coming in, but haven’t made a comment.

About this page

Comments are not everyone’s cup-of-tea, but if that’s what works for you, then this page is a gift. It’s also a way for me to say thanks to all the informative useful comments that come in and to encourage this open-source form of education and mental-tennis.

Sometimes several threads are active simultaneously on this site, and some of the latest comments are hidden under 300 others, or in a year old post, so it seemed worth dedicating a page just to the most recent comments. (The sidebar is so small.) This is where you’ll find an automatically updated list of the latest comments.

If you post a news item and write <b>NEWS</b> as the first word, it will help your item stand out and this page may end up serving as a quasi-24-hour-wiki-news page.

I don’t know if this type of “comments” page has been done on other sites. Let me know if you find one!

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