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Global Climate Change Digest
A Guide to Information on Greenhouse Gases and Ozone Depletion
Published July 1988 through June 1999

FROM VOLUME 8, NUMBER 4, APRIL 1995

PROFESSIONAL PUBLICATIONS...
BIOGEOCHEMICAL CYCLES: METHANE

Item #d95apr53

"Variations in Atmospheric Methane Concentration During the Holocene Epoch," T. Blunier (Phys. Inst., Univ. Bern, Sidlerstr. 5, CH-3012 Bern, Switz.), J. Chappellaz et al., Nature, 374(6517), 46-49, Mar. 2, 1995.

Presents a continuous, high-resolution record for 8,000 to 1,000 yr BP from a Greenland ice core. Unlike most climate proxies from ice cores, methane concentrations show significant variation during the Holocene. The observation that the lowest methane concentrations occurred in the mid-Holocene, when many tropical lakes dried up, supports the hydrological cycle at low latitudes as the dominant control on past levels of atmospheric methane.

Item #d95apr54

"Methane in the Baltic and North Seas and a Reassessment of the Marine Emissions of Methane," H.W. Bange (Biogeochem. Dept., M. Planck Inst. Chem., POB 3060, D-6500 Mainz, Ger.), U.H. Bartell et al., Global Biogeochem. Cycles, 8(4), 465-480, Dec. 1994.

Evaluates the time-dependent variation of oceanic flux to the atmosphere using a simple, coupled, three-layer model. Results indicate that, even with increasing tropospheric methane concentration, the ocean will remain a source of atmospheric methane. Although shelf areas and estuaries represent only a small part of the world's ocean, they contribute about 75% to global oceanic emissions.

Item #d95apr55

"Methane Hydrate Stability in Seawater," G.R. Dickens (Dept. Geol. Sci., Univ. Michigan, Ann Arbor MI 48109), M. S. Quinby-Hunt, Geophys. Res. Lett., 21(19), 2115-2118, Sep. 15, 1994. Experimental data provide a minimum constraint for depth ranges over which methane hydrate is stable in the ocean environment.

Item #d95apr56

"Nitrous Oxide and Methane Emissions from Aero Engines," (see Global Climate Change Digest, p. 11, Nov.-Dec.).

Item #d95apr57

"Northern Hemisphere Concentrations of Methane and Nitrous Oxide Since 1800: Results from the Mt. Logan and 20D Ice Cores," (see Global Climate Change Digest, July 1994).

Specialized Papers

Item #d95apr58

Two items from Global Biogeochem. Cycles, 9(1), Mar. 1995:

"Factors Controlling Atmospheric Methane Consumption by Temperate Forest Soils," M.S. Castro (Ctr. Environ. & Estaurine Stud., Univ. Maryland, Frostburg MD 21532), P.A. Steudler et al., 1-10.

"Influence of Organic Matter Incorporation on the Methane Emission from a Wetland Rice Field," H.A.C.D. van der Gon (Dept. Soil Sci. & Geol., Agric. Univ. Wageningen, POB 37, 6700 AA Wageningen, Neth.), H.U. Neue, 11-22.

Item #d95apr59

"Ground-Based Remote Sensing of Methane Height Profiles with a Tunable Diode Laser Heterodyne Spectrometer," M. Koide (Dept. Astrophys. & Geophys., Tohoku Univ., Sendai 980-77, Japan), M. Taguchi et al., Geophys. Res. Lett., 22(4), 401-404, Feb. 15, 1995.

Item #d95apr60

"Carbon Isotopic Analysis of Atmospheric Methane by Isotope-Ratio-Monitoring Gas Chromatography-Mass Spectrometry," D.A. Merritt (Biogeochem. Lab., Indiana Univ., Bloomington IN 47405), J.M. Hayes, D.J. Des Marais, J. Geophys. Res., 100(D1), 1317-1326, Jan. 20, 1995.

Item #d95apr61

Two items from Global Biogeochem. Cycles, 8(4), Dec. 1994:

"Climate Controls on Temporal Variability of Methane Flux from a Poor Fen in Southeastern New Hampshire: Measurement and Modeling," S. Frolking (Inst. Study Earth, Oceans & Space, Univ. New Hampshire, Durham NH 03824), P. Crill, 385-397.

"Field and Laboratory Studies of Methane Oxidation in an Anoxic Marine Sediment: Evidence for a Methanogen-Sulfate Reducer Consortium," T.M. Hoehler (Curriculum Marine Sci., Univ. N. Carolina, CB 3300, Chapel Hill NC 27599), M.J. Alperin et al., 451-463.

Item #d95apr62

"Dissolved Methane Distributions, Sources and Sinks in the Western Bransfield Strait, Antarctica," B.D. Tilbrook (Div. Oceanog., Commonwealth Sci. & Indus. Res. Org., Hobart, Tasmania 7001, Australia), D.M. Karl, J. Geophys. Res., 99(C8), 16,383-16,393, Aug. 15, 1994.

Item #d95apr63

"Effects of Reductions in Stratospheric Ozone on Tropospheric Chemistry Through Changes in Photolysis Rates," (see Global Climate Change Digest, Sep. 1994).

Item #d95apr64

Two items from Biogeochem., 27(1), 1994:

"Fluxes of Nitrous Oxide and Methane from Nitrogen-Amended Soils in a Colorado Alpine Ecosystem," J.C. Neff (Dept. Biol. Sci., Stanford Univ., Stanford CA 94305), W.D. Bowman et al., 23-33.

"A Three-Year Study of Controls on Methane Emissions from Two Michigan Peatlands," R.D. Shannon (Sch. Public & Environ. Affairs, Indiana Univ., Bloomington IN 47405), J.R. White, 35-60.