Literature DB >> 20522772

Fractal organic hazes provided an ultraviolet shield for early Earth.

E T Wolf1, O B Toon.   

Abstract

The Archean Earth (3.8 to 2.5 billion years ago) was probably enshrouded by a photochemical haze composed of fractal aggregate hydrocarbon aerosols. The fractal structure of the aerosols would have had a strong effect on the radiative properties of the haze. In this study, a fractal aggregate haze was found to be optically thick in the ultraviolet wavelengths while remaining relatively transparent in the mid-visible wavelengths. At an annual production rate of 10(14) grams per year and an average monomer radius of 50 nanometers, the haze would have provided a strong shield against ultraviolet light while causing only minimal antigreenhouse cooling.

Entities:  

Year:  2010        PMID： 20522772     DOI： 10.1126/science.1183260

Source DB:  PubMed          Journal:  Science        ISSN： 0036-8075            Impact factor:   47.728


  17 in total

1.  Organic Haze as a Biosignature in Anoxic Earth-like Atmospheres.

Authors:  Giada Arney; Shawn D Domagal-Goldman; Victoria S Meadows
Journal:  Astrobiology       Date:  2017-11-30       Impact factor: 4.335

2.  Albedos, Equilibrium Temperatures, and Surface Temperatures of Habitable Planets.

Authors:  Anthony D Del Genio; Nancy Y Kiang; Michael J Way; David S Amundsen; Linda E Sohl; Yuka Fujii; Mark Chandler; Igor Aleinov; Christopher M Colose; Scott D Guzewich; Maxwell Kelley
Journal:  Astrophys J       Date:  2019-10-14       Impact factor: 5.874

3.  On transient climate change at the Cretaceous-Paleogene boundary due to atmospheric soot injections.

Authors:  Charles G Bardeen; Rolando R Garcia; Owen B Toon; Andrew J Conley
Journal:  Proc Natl Acad Sci U S A       Date:  2017-08-21       Impact factor: 11.205

4.  The Pale Orange Dot: The Spectrum and Habitability of Hazy Archean Earth.

Authors:  Giada Arney; Shawn D Domagal-Goldman; Victoria S Meadows; Eric T Wolf; Edward Schwieterman; Benjamin Charnay; Mark Claire; Eric Hébrard; Melissa G Trainer
Journal:  Astrobiology       Date:  2016-10-28       Impact factor: 4.335

5.  The Habitability of Proxima Centauri b: Environmental States and Observational Discriminants.

Authors:  Victoria S Meadows; Giada N Arney; Edward W Schwieterman; Jacob Lustig-Yaeger; Andrew P Lincowski; Tyler Robinson; Shawn D Domagal-Goldman; Russell Deitrick; Rory K Barnes; David P Fleming; Rodrigo Luger; Peter E Driscoll; Thomas R Quinn; David Crisp
Journal:  Astrobiology       Date:  2018-02-12       Impact factor: 4.335

6.  Physiological fractals: visual and statistical evidence across timescales and experimental states.

Authors:  Jeffrey J Kim; Stacey Parker; Trent Henderson; James N Kirby
Journal:  J R Soc Interface       Date:  2020-06-24       Impact factor: 4.118

7.  Availability of O(2) and H(2)O(2) on pre-photosynthetic Earth.

Authors:  Jacob Haqq-Misra; James F Kasting; Sukyoung Lee
Journal:  Astrobiology       Date:  2011-05-05       Impact factor: 4.335

8.  Sunlight-initiated chemistry of aqueous pyruvic acid: building complexity in the origin of life.

Authors:  Elizabeth C Griffith; Richard K Shoemaker; Veronica Vaida
Journal:  Orig Life Evol Biosph       Date:  2013-12-22       Impact factor: 1.950

Review 9.  Plausible Emergence and Self Assembly of a Primitive Phospholipid from Reduced Phosphorus on the Primordial Earth.

Authors:  Michael O Gaylor; Pere Miro; Bess Vlaisavljevich; Ashen Anuradha Suduweli Kondage; Laura M Barge; Arthur Omran; Patrick Videau; Vaille A Swenson; Lucas J Leinen; Nathaniel W Fitch; Krista L Cole; Chris Stone; Samuel M Drummond; Kayli Rageth; Lillian R Dewitt; Sarah González Henao; Vytis Karanauskus
Journal:  Orig Life Evol Biosph       Date:  2021-07-19       Impact factor: 1.950

10.  Atmospheric production of glycolaldehyde under hazy prebiotic conditions.

Authors:  Chester E Harman; James F Kasting; Eric T Wolf
Journal:  Orig Life Evol Biosph       Date:  2013-05-22       Impact factor: 1.950
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