In Reply to: Because he's seen a swiss report, AdamB [Profile/Gallery] , Wed, 4 Jul 2001 11:50:29

Here's an excerpt from Presidential advisor, NASA's Dr. James E. Hansen's take on the situation:

"Black carbon (soot) aerosols. This is a major pollutant that has received inadequate attention. Aerosols are tiny solid or liquid droplets in the air. Black (elemental) carbon aerosols are soot formed by incomplete combustion, which often can be seen emanating from diesel-powered trucks and buses. Coal and biomass burning are also major sources.

Black carbon aerosols cause a positive climate forcing that is very uncertain in magnitude, but we estimate that it is probably of the order of 0.5 to 1 Watt per square meter on global average. It causes warming in several ways: by absorbing sunlight, by warming the lower layer of the atmosphere and thus reducing cloud cover, by making clouds slightly "dirty", and by darkening snow and sea ice surfaces when it is deposited there.

Black carbon aerosols are a principal component of air pollution. In the words of Tony Hansen, microscopic soot aerosols are like tiny sponges that absorb other substances including toxic organic particles. A recent study in France, Austria and Switzerland puts the annual cost of particulate pollution in those countries at 40,000 lives, 500,000 asthma attacks, and medical costs amounting to 1.7% of their gross domestic products. Air pollution in developing countries, such as India and China, is even more severe."

I'm on the biomass burning part of black carbon aerosol spectrum, so I have an interest in this stuff. Seems to me diesels cannot be lumped. There are good, new, clean diesels and there are old, bad, dirty ones.

Global Warming in the 21st Century

• The Kyoto CO2 Rip-Off, Coolknight, Tue, 3 Jul 2001 09:54:13
  • Diesel has a great future, Pieter M. Kuipers, Wed, 4 Jul 2001 17:37:18
    • absolutely!, John A., Wed, 4 Jul 2001 18:46:44
  • dirty diesel engines you say?, Dean, Wed, 4 Jul 2001 11:40:12
    • US diesel fuel IS heating oil; one is just dyed for taxation., jp, Thu, 5 Jul 2001 12:02:38
      • That's #2 diesel., Dave Westlake, Thu, 5 Jul 2001 14:51:05
    • Because he's seen a swiss report, AdamB , Wed, 4 Jul 2001 11:50:29
      • Re: Because he's seen a swiss report, Dean, Thu, 5 Jul 2001 10:54:00
      • Swiss, Austrian, and French report, John A., Wed, 4 Jul 2001 12:33:04 <-- Viewing This Message
  • CO2 reduction YES, Hi fuel TAXES NO!, Coolknight, Wed, 4 Jul 2001 05:06:34
    • whatever it takes, John A., Wed, 4 Jul 2001 10:21:47
    • Corr. CO2 reduction YES, Higher fuel TAXES NO!, Coolknight, Wed, 4 Jul 2001 06:03:10
  • who ya gonna believe, CK?, John A,, Tue, 3 Jul 2001 23:40:45
  • a different perspective, Jo K, Tue, 3 Jul 2001 17:09:12
    • been following the polls? (nm), John A., Tue, 3 Jul 2001 23:44:57
      • You'll need to elaborate I'm afraid. nt, Jo K, Wed, 4 Jul 2001 01:15:18
        • Re: You'll need to elaborate I'm afraid. nt, John A., Wed, 4 Jul 2001 11:00:18
          • Ah, I see, Jo K, Wed, 4 Jul 2001 16:10:36
  • Re: The Kyoto CO2 Rip-Off, Eli5, Tue, 3 Jul 2001 15:35:51
    • you must not be reading them all... ;) n/m, chrisx, Tue, 3 Jul 2001 19:30:24
  • Re: The Kyoto CO2 Rip-Off, Sjer, Tue, 3 Jul 2001 14:08:20
    • Japan's end game, John A., Tue, 3 Jul 2001 23:48:00
    • Re: The Kyoto CO2 Rip-Off, julz, Tue, 3 Jul 2001 18:25:13
    • Re: How many european coutries have ratified the treaty?n/m, jack b, Tue, 3 Jul 2001 15:15:40
      • One. The treaty isn't due for ratification 'till 2002 (nm), John A,, Tue, 3 Jul 2001 23:52:59
      • I believe that the EU has ratified the treaty., tlrm, Tue, 3 Jul 2001 15:24:11
        • Re: I believe that the EU has ratified the treaty., Jo K, Tue, 3 Jul 2001 17:10:54
  • Global Warming a hoax, Dave, Tue, 3 Jul 2001 14:00:42
    • temp measurement devices (long), saabaru, Thu, 5 Jul 2001 11:30:54
      • this helps, thanks, John A., Thu, 5 Jul 2001 13:16:56
    • LOL Now that is a blatant disregard of the truth...., AdamB , Wed, 4 Jul 2001 05:26:39
      • blame Canada, John A., Wed, 4 Jul 2001 11:04:27
    • Re: Global Warming a hoax, David Hanley, Tue, 3 Jul 2001 17:14:06
      • ExxonMobil wants YOU to believe it's a hoax, John A,, Tue, 3 Jul 2001 23:51:36
  • Re: The Kyoto CO2 Rip-Off, julz, Tue, 3 Jul 2001 12:20:44
    • Woo Hoo WHAT fun, julz, Tue, 3 Jul 2001 19:02:45
    • sorry, the "science" behind global warming is very iffy..., MJM , Tue, 3 Jul 2001 13:51:12
      • 25 Years ago some were perdicting an ice age n/m, Ron H, Wed, 4 Jul 2001 09:02:00
      • evolution, David R, Wed, 4 Jul 2001 06:43:59
      • Re: sorry, the "science" behind global warming is very iffy..., David Hanley, Tue, 3 Jul 2001 17:21:48
        • Re: sorry, the "science" behind global warming is very iffy..., julz, Tue, 3 Jul 2001 18:30:09
      • There is a thing called the "protective principal":, tlrm, Tue, 3 Jul 2001 14:33:52
        • "protective principal": -excellent point, John A, Wed, 4 Jul 2001 00:00:12
        • Re: There is a thing called the "protective principal":, MJM , Tue, 3 Jul 2001 15:20:27
          • Nuclear power is a French thang, not EU level policy., tlrm, Tue, 3 Jul 2001 15:31:35
      • Re: sorry, the "science" behind global warming is very iffy..., chrisx, Tue, 3 Jul 2001 14:24:23
        • understanding an effect is _very_ different from understanding, MJM , Tue, 3 Jul 2001 15:24:04
          • sorry, I for one, do not believe you (nm), John A., Tue, 3 Jul 2001 23:55:09
          • sure...if you are pre-human it makes sense....zog LIKE fire. n/m, chrisx, Tue, 3 Jul 2001 19:29:14
            • that right. Zog do 'nother experiment showing square stick burn,, saabaru, Thu, 5 Jul 2001 13:04:17
              • Re: that right. Zog do 'nother experiment showing square stick burn,, MJM , Wed, 11 Jul 2001 08:46:30
              • right you are again, John A., Thu, 5 Jul 2001 13:28:08

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