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  • October « 2009 « RealClimate
    the intent and in fact my metaphor wouldn t have made sense in that context at all Instead it was a criticism of people who are expending effort arguing about whether 350 is precisely the right number for a long term target or whether it should be somewhat higher or lower Since we aren t currently headed anywhere near 350 ppmv in fact we are at 388 ppmv CO2 and increasing by about 2 ppmv yr we need to urgently think of ways the situation can turn around Tapping into the creativity and enthusiasm shown by the 350 org campaigners will certainly be part of that process We discussed some of the thinking behind this Target CO 2 when Jim Hansen and colleagues paper first came out where I think we made it clear that picking a specific CO 2 target to avoid dangerous climate change is an inexact science at best The comments by Robert Brulle and Ray Pierrehumbert at DotEarth and James Hrynyshyn also highlight some of that complexity And I think the suggestions by Paulina for how a tweaked article might have been clearer are very apropos However as the final line in my NYT quote should make clear personally I think the scientific case not increasing CO 2 any further is very strong Since the planet has not caught up with current levels of concentrations emissions and thus will continue to change picking an ultimate target that is less than today s level is therefore wise Of course how we get there is much trickier than knowing where it is we should be going but having a map of the destination is useful As we discussed in the trillionth ton posting a couple of months back how we get there also makes a difference In my original email to Andy Revkin I had actually appended a line If you ask a scientist how much more CO2 do you think we should add to the atmosphere the answer is going to be none All the rest is economics and technology and sociology and psychology and politics etc but the point is that working out how we get there from here is the real challenge and the more people who are aware and involved in developing those solutions the better Comments pop up 214 Climate Cover Up A Brief Review Filed under Climate Science Reviews mike 20 October 2009 We often allude to the industry funded attacks against climate change science and the dubious cast of characters involved here at RealClimate In recent years for example we ve commented on disinformation efforts by industry front groups such as the Competitive Enterprise Institute the Cato Institute the Fraser Institute and a personal favorite The Heartland Institute and by industry friendly institutions such as the Wall Street Journal editorial board and other media outlets that assist in the manufacture and distribution of climate change disinformation More Comments pop up 455 Why Levitt and Dubner like geo engineering and why they

    Original URL path: http://www.realclimate.org/index.php/archives/2009/10/ (2016-02-13)
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  • September « 2009 « RealClimate
    is because we aren t the target audience and so tend to rate popularizations by different criteria than lay people Often we just don t get it Into this void has stepped Randy Olsen with his new book Don t be such a scientist For those who don t know Randy he s a rather extraordinary individual one of the few individuals who has run the gamut from hard core scientist to Hollywood film maker He s walked the walk and can talk the talk and when he does talk we should be listening More Comments pop up 602 Climate Services Filed under Climate Science RC Forum Reporting on climate rasmus 9 September 2009 I recently attended the World Climate Conference 3 WCC 3 hosted by the World Meteorological Organization WMO in Geneva Most of the talk was of providing climate services CS and coordinating these globally But what are climate services and how much of what was envisaged is scientifically doable More Comments pop up 201 Site Google Custom Search Recent Comments What is the best description of the greenhouse effect Jim Eager What is the best description of the greenhouse effect Patrick Eriksson What is the best description of the greenhouse effect Kevin McKinney Anti scientists Carbomontanus What is the best description of the greenhouse effect Spencer Marvel et al 2015 Part III Response to Nic Lewis SteveS What is the best description of the greenhouse effect Chris Colose Blizzard Jonas and the slowdown of the Gulf Stream System doiknow What is the best description of the greenhouse effect James Powell Unforced Variations Feb 2016 Jim Galasyn With Inline Responses Marvel et al 2015 Part III Response to Nic Lewis SteveS Marvel et al 2015 Part III Response to Nic Lewis steve s Marvel et al 2015 Part III Response to Nic Lewis Andrew Kerber Blizzard Jonas and the slowdown of the Gulf Stream System Hank Roberts Blizzard Jonas and the slowdown of the Gulf Stream System doiknow Marvel et al 2015 Part III Response to Nic Lewis MartinM Anti scientists Don McKenzie Marvel et al 2015 Part III Response to Nic Lewis Matt Skaggs Anti scientists mikeworst New On line Classes and Models Marcus Pages Acronym index Data Sources Categories Climate Science Aerosols Arctic and Antarctic Carbon cycle Climate impacts Climate modelling El Nino Geoengineering Greenhouse gases Hurricanes Instrumental Record IPCC Oceans Paleoclimate Sun earth connections Communicating Climate Reporting on climate skeptics Extras Attic Comment Policy Contributor Bio s FAQ Glossary In the News Reviews Supplemental data Tutorials hydrological cycle Open thread RC Forum Scientific practice statistics The Bore Hole Books Contributors Highlights Dummies Guide to the latest Hockey Stick controversy El Nino Global Warming and Anomalous U S Winter Warmth Hurricanes and Global Warming Myth vs Fact Regarding the Hockey Stick On attribution On mismatches between models and observations On Sensitivity Part I Tropical Glacier Retreat Water Vapour feedback or forcing Welcome to RealClimate Other Opinions A Few Things Ill Considered Accuweather Climate Blog And Then

    Original URL path: http://www.realclimate.org/index.php/archives/2009/09/ (2016-02-13)
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  • August « 2009 « RealClimate
    up 285 Resolving technical issues in science Filed under Arctic and Antarctic Climate Science Communicating Climate Reporting on climate skeptics group 14 August 2009 One of the strengths of science is its capacity to resolve controversies by generally accepted procedures and standards Many scientific questions especially more technical ones are not matters of opinion but have a correct answer Scientists document their procedures and findings in the peer reviewed literature in such a way that they can be double checked and challenged by others The proper way to challenge results is of course also through the peer reviewed literature so that the challenge follows the same standards of documentation as did the original finding More Comments pop up 217 A biased economic analysis of geoengineering Filed under Aerosols Climate Science Geoengineering Greenhouse gases group 11 August 2009 Guest commentary by Alan Robock Rutgers University Bjorn Lomborg s Climate Consensus Center just released an un refereed report on geoengineering An Analysis of Climate Engineering as a Response to Global Warming by J Eric Bickel and Lee Lane The consensus in the title of Lomborg s center is based on a meeting of 50 economists last year The problem with allowing economists to decide the proper response of society to global warming is that they base their analysis only on their own quantifications of the costs and benefits of different strategies In this report discussed below they simply omit the costs of many of the potential negative aspects of producing a stratospheric cloud to block out sunlight or cloud brightening and come to the conclusion that these strategies have a 25 5000 to 1 benefit cost ratio That the second author works for the American Enterprise Institute a lobbying group that has been a leading global warming denier is not surprising except that now they are in favor of a solution to a problem they have claimed for years does not exist More Comments pop up 329 PETM Weirdness Filed under Climate Science Greenhouse gases Paleoclimate Reporting on climate gavin 10 August 2009 The Paleocene Eocene Thermal Maximum PETM was a very weird period around 55 million years ago However the press coverage and discussion of a recent paper on the subject was weirder still More Comments pop up 203 Older Entries Site Google Custom Search Recent Comments What is the best description of the greenhouse effect Jim Eager What is the best description of the greenhouse effect Patrick Eriksson What is the best description of the greenhouse effect Kevin McKinney Anti scientists Carbomontanus What is the best description of the greenhouse effect Spencer Marvel et al 2015 Part III Response to Nic Lewis SteveS What is the best description of the greenhouse effect Chris Colose Blizzard Jonas and the slowdown of the Gulf Stream System doiknow What is the best description of the greenhouse effect James Powell Unforced Variations Feb 2016 Jim Galasyn With Inline Responses Marvel et al 2015 Part III Response to Nic Lewis SteveS Marvel et al 2015

    Original URL path: http://www.realclimate.org/index.php/archives/2009/08/ (2016-02-13)
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  • July « 2009 « RealClimate
    of a development for the Americans We posted recently on two new papers about what it would take to limit global average warming finding that it would require fairly strong change in trajectory About 2 C as a target we wrote even a moderate warming of 2 C stands a strong chance of provoking drought and storm responses that could challenge civilized society leading potentially to the conflict and suffering that go with failed states and mass migrations Global warming of 2 C would leave the Earth warmer than it has been in millions of years a disruption of climate conditions that have been stable for longer than the history of human agriculture Given the drought that already afflicts Australia the crumbling of the sea ice in the Arctic and the increasing storm damage after only 0 8 C of warming so far a target of 2 C seems almost cavalier Nevertheless we view today s development as a constructive step Comments pop up 411 Unscientific America A Review Filed under Climate Science Communicating Climate Reviews mike 8 July 2009 Author Chris Mooney of Storm World fame and fellow Intersection blogger scientist and writer Sheril Kirshenbaum have written an extraordinary if rather sobering book entitled Unscientific America What I found most refreshing about the book is that it not only isolates the history behind and source of the problem in question the pervasiveness and dangerousness of scientific illiteracy in modern society but it offers viable solutions This book is a must read for anybody who cares about science and the growing disconnect between the scientific and popular cultures the problem of the so called Two Cultures first discussed by C P Snow Unscientific America explores how we ve come to the point we re now at examining the historical factors behind the diminishing prominence of science and scientists in the popular culture of the U S since its heyday in the years following WW II The authors uncover more than enough blame to go around They find fault with the media both in how it portrays science and scientists e g the icon of the mad scientist and in the decreasing news coverage devoted to issues involving science and technology They find fault in the way policy makers often abuse science cherry picking those particular scientific findings which suit their agenda and in the behavior of corporate special interests who in areas such as our own area of climate change have often deliberately manufactured false controversy and confusion to dissuade the public from demanding action be taken At this point the scientists among you might begin to feel absolved of any responsibility for the problem Don t Mooney and Kirshenbaum won t allow us to escape blame and with good reason As they point out we eat our own when it comes to colleagues engaged in public outreach and science popularization Case in point Carl Sagan a hero to many of us who value science outreach One of the darker

    Original URL path: http://www.realclimate.org/index.php/archives/2009/07/ (2016-02-13)
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  • June « 2009 « RealClimate
    attached to the stimulus proposal Indeed the enthusiastic recycling of talking points long thought to have been dead and buried has been given a huge boost by the publication of a new book by Ian Plimer who seems to have been collecting them for years Given the number of simply made up facts in that tome one soon realises that the concept of an objective reality against which one should measure claims and judge arguments is not something that is universally shared This is troubling and although there is certainly a role for some to point out the incoherence of such arguments which in that case Tim Lambert and Ian Enting are doing very well it isn t something that requires much in the way of physical understanding or scientific background As an aside this is a good video description of the now classic Dunning and Kruger papers on how the people who are most wrong are the least able to perceive it The Onion had a great piece last week that encapsulates the trajectory of these discussions very well This will of course be familiar to anyone who has followed a comment thread too far into the weeds and is one of the main reasons why people with actual constructive things to add to a discourse get discouraged from wading into wikipedia blogs or the media One has to hope that there is the possibility of progress before one engages However there is still cause to engage not out of the hope that the people who make idiotic statements can be educated but because bystanders deserve to know where better information can be found Still it can sometimes be hard to find the enthusiasm A case in point is a 100 comment thread criticising my recent book in which it was clear that not a single critic had read a word of it you can find the thread easily enough if you need to it s too stupid to link to Not only had no one read it none of the commenters even seemed to think they needed to most found it easier to imagine what was contained within and criticise that instead It is vaguely amusing in a somewhat uncomfortable way Communicating with people who won t open the book read the blog post or watch the program because they already know what must be in it is tough and probably not worth one s time But communication in general is worthwhile and finding ways to get even a few people to turn the page and allow themselves to be engaged by what is actually a fantastic human and scientific story is something worth a lot of our time Along those lines Randy Olson a scientist turned filmmaker and author has a new book coming out called Don t Be Such a Scientist Talking Substance in an Age of Style which could potentially be a useful addition to that discussion There is a nice post over at Chris

    Original URL path: http://www.realclimate.org/index.php/archives/2009/06/ (2016-02-13)
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  • May « 2009 « RealClimate
    satellite missions The two papers come to completely opposite conclusions regarding the long term trend So which one if either is right then And does it really matter More Comments pop up 96 Monckton s deliberate manipulation Filed under Climate Science Instrumental Record IPCC gavin 2 May 2009 Our favorite contrarian the potty peer Christopher Monckton has been indulging in a little aristocratic artifice again Not one to be constrained by mere facts or observable reality he has launched a sally against Andy Revkin for reporting the shocking news that past industry disinformation campaigns were not sincere explorations of the true uncertainties in climate science More Comments pop up 513 Welcome to the fray Filed under Climate Science group 1 May 2009 As imitation is the sincerest form of flattery we ve naturally been delighted that a number of sites have sprung up over the past few years with missions complementary to our own focussing on the science of climate change Last year we were introduced to climate ethics whose mission it is to focus on the ethical dimensions of climate change Now there is RealClimateEconomics whose aim it is to focus on the economic considerations surrounding climate change Neither this site nor climateethics org has any formal relationship with RealClimate despite the similarity in name We do nonetheless welcome them to the fray We are pleased to add them to our blogroll which we hope has become a useful resource for those wishing to explore the broader discourse on climate change that lies beyond the science Comments pop up 54 Site Google Custom Search Recent Comments What is the best description of the greenhouse effect Jim Eager What is the best description of the greenhouse effect Patrick Eriksson What is the best description of the greenhouse effect Kevin McKinney Anti scientists Carbomontanus What is the best description of the greenhouse effect Spencer Marvel et al 2015 Part III Response to Nic Lewis SteveS What is the best description of the greenhouse effect Chris Colose Blizzard Jonas and the slowdown of the Gulf Stream System doiknow What is the best description of the greenhouse effect James Powell Unforced Variations Feb 2016 Jim Galasyn With Inline Responses Marvel et al 2015 Part III Response to Nic Lewis SteveS Marvel et al 2015 Part III Response to Nic Lewis steve s Marvel et al 2015 Part III Response to Nic Lewis Andrew Kerber Blizzard Jonas and the slowdown of the Gulf Stream System Hank Roberts Blizzard Jonas and the slowdown of the Gulf Stream System doiknow Marvel et al 2015 Part III Response to Nic Lewis MartinM Anti scientists Don McKenzie Marvel et al 2015 Part III Response to Nic Lewis Matt Skaggs Anti scientists mikeworst New On line Classes and Models Marcus Pages Acronym index Data Sources Categories Climate Science Aerosols Arctic and Antarctic Carbon cycle Climate impacts Climate modelling El Nino Geoengineering Greenhouse gases Hurricanes Instrumental Record IPCC Oceans Paleoclimate Sun earth connections Communicating Climate Reporting on climate skeptics Extras

    Original URL path: http://www.realclimate.org/index.php/archives/2009/05/ (2016-02-13)
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  • April « 2009 « RealClimate
    so I recommended him to read up on RC Comments pop up 301 Yet more aerosols Comment on Shindell and Faluvegi Filed under Aerosols Climate modelling Climate Science Greenhouse gases Instrumental Record group 21 April 2009 Guest post from Drew Shindell NASA GISS Our recent paper Climate response to regional radiative forcing during the twentieth century has generated some interesting discussion some of it very interesting indeed So this post is an attempt to give a better context to the methods and implications of the study More Comments pop up 114 Aerosol effects and climate Part II the role of nucleation and cosmic rays Filed under Aerosols Climate Science Sun earth connections group 15 April 2009 Guest post by Bart Verheggen Department of Air Quality and Climate Change Energy research Institute of the Netherlands ECN In Part I I discussed how aerosols nucleate and grow In this post I ll discuss how changes in nucleation and ionization might impact the net effects Cosmic rays Galactic cosmic rays GCR are energetic particles originating from space entering Earth s atmosphere They are an important source of ionization in the atmosphere besides terrestrial radioactivity from e g radon naturally emitted by the Earth s surface Over the oceans and above 5 km altitude GCR are the dominant source Their intensity varies over the 11 year solar cycle with a maximum near solar minimum Carslaw et al give a nice overview of potential relations between cosmic rays clouds and climate Over the first half of the 20th century solar irradiance has slightly increased and cosmic rays have subsequently decreased RC has had many previous posts on the purported links between GCR and climate e g here here and here More Comments pop up 309 Aerosol formation and climate Part I Filed under Aerosols Climate Science group 13 April 2009 Guest post by Bart Verheggen Department of Air Quality and Climate Change Energy research Institute of the Netherlands ECN The impacts of aerosols on climate are significant but also very uncertain There are several reasons for this one of which is the uncertainty in how and how fast they are formed in the atmosphere by nucleation Here in part I I ll review some of the basic processes that are important in determining the climate effects of aerosols focusing in particular on their formation This is also relevant in order to better understand and hopefully quantify the hypothetical climate effects of galactic cosmic rays which I ll discuss in a follow up post More Comments pop up 81 Older Entries Site Google Custom Search Recent Comments What is the best description of the greenhouse effect Jim Eager What is the best description of the greenhouse effect Patrick Eriksson What is the best description of the greenhouse effect Kevin McKinney Anti scientists Carbomontanus What is the best description of the greenhouse effect Spencer Marvel et al 2015 Part III Response to Nic Lewis SteveS What is the best description of the greenhouse effect Chris Colose Blizzard

    Original URL path: http://www.realclimate.org/index.php/archives/2009/04/ (2016-02-13)
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  • March « 2009 « RealClimate
    gavin 14 March 2009 There is a new paper in Science this week on changes to atmospheric visibility In clear sky conditions no clouds this is related mainly to the amount of aerosols particulate matter in the air but is slightly dependent on the amount of water vapour as well which is corrected for in this study The authors report that the clear sky visibility has decreased almost everywhere particularly in Asia from 1973 to 2007 with the exception of Europe where visibility has increased consistent with the brightening trend reported recently Trends in North American stations seem relatively flat There is another story that didn t get as much press when it came out late last year but that is highly relevant to this issue whether any of the efforts that the Chinese authorities to reduce air pollution ahead of the Olympics last year had any impact To the extent that they did they might point the way to reducing aerosols and other pollutants across Asia but it might also reveal how hard it is to do so More Comments pop up 342 Advice for a young climate blogger Filed under Climate Science Communicating Climate group 9 March 2009 Congratulations You have taken the first step towards attempting to communicate your expertise and thoughts to the wider world which remains poorly served by its traditional sources of information when it comes to complex societally relevant issues like climate change Your aim to clarify the science or policy options or ethical considerations or simply to explain your views is a noble endeavor and we wish you luck and wide readership But do be aware that you are dipping your blog into sometimes treacherous waters Bad things can happen to good bloggers So in a spirit of blog camaraderie and in light of our own experiences and observations we offer some advice that may be of some help in navigating the political climate relatively unscathed More Comments pop up 434 Site Google Custom Search Recent Comments What is the best description of the greenhouse effect Jim Eager What is the best description of the greenhouse effect Patrick Eriksson What is the best description of the greenhouse effect Kevin McKinney Anti scientists Carbomontanus What is the best description of the greenhouse effect Spencer Marvel et al 2015 Part III Response to Nic Lewis SteveS What is the best description of the greenhouse effect Chris Colose Blizzard Jonas and the slowdown of the Gulf Stream System doiknow What is the best description of the greenhouse effect James Powell Unforced Variations Feb 2016 Jim Galasyn With Inline Responses Marvel et al 2015 Part III Response to Nic Lewis SteveS Marvel et al 2015 Part III Response to Nic Lewis steve s Marvel et al 2015 Part III Response to Nic Lewis Andrew Kerber Blizzard Jonas and the slowdown of the Gulf Stream System Hank Roberts Blizzard Jonas and the slowdown of the Gulf Stream System doiknow Marvel et al 2015 Part III Response to

    Original URL path: http://www.realclimate.org/index.php/archives/2009/03/ (2016-02-13)
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