Alkenones are long-chain unsaturated methyl and ethyl n-ketones produced by a few phytoplankton species of the class Prymnesiophyceae. Alkenones typically...

citric acid cycle, which is of great importance in bioenergy. An enone (or alkenone) is an organic compound containing both alkene and ketone functional groups...

last 16,000 years from records of planktonic stable oxygen isotopes and alkenone unsaturation ratios". Palaeogeography, Palaeoclimatology, Palaeoecology...

terminations) of older glacial periods. Temperature-sensitive lipids, long chain alkenones, found in lake and marine sediments, are well-regarded as a powerful paleothermometer...

temperature calibration of the alkenone unsaturation index (U K′ 37 ) in surface waters and comparison with surface sediments: ALKENONE UNSATURATION INDEX". Geochemistry...

compounds, known as alkenones, can be found in marine sediments long after other soft parts of the organisms have decomposed. Alkenones are most commonly...

into the icehouse climate. Multiple proxies, such as oxygen isotopes and alkenones, indicate that at the Eocene–Oligocene transition, the atmospheric carbon...

the middle of the Mesozoic Era. An analysis of CO2 reconstructions from alkenone records shows that CO2 in the atmosphere declined before and during Antarctic...

characteristic of certain climatic zones. Biomarker molecules such as the alkenones may yield information about their temperature of formation. Chemical signatures...

Several geochemical proxy tools include long-chain organic molecules (e.g. alkenones), stable and radioactive isotopes, and trace metals. Additionally, sediment...

bankruptcy in 2015. By 2015, cultivation of fatty acid methyl esters and alkenones from the algae, Isochrysis, was under research. By 2016, Thomas Brueck...

research, amongst other sedimentological studies, geochemical studies, with alkenones, Mg/Ca, and micropaleontological, with foraminifera, pollen and spores...

A paleothermometer is a methodology that provides an estimate of the ambient temperature at the time of formation of a natural material. Most paleothermometers...

the summer thermocline. and for its production of molecules known as alkenones that are commonly used by earth scientists as a means to estimate past...

for jet biofuels. By 2015, cultivation of fatty acid methyl esters and alkenones from the algae, Isochrysis, was under research as a possible jet biofuel...

articles on Historic and Prehistoric climate indicators of all types. To Add: Alkenone analysis TEX-86 analysis Nile river flood levels Trace mineral ratios in...

Andreas Mackensen; Kimitaka Kawamura; Richard D. Pancost (15 March 2010). "Alkenone and boron-based Pliocene pCO2 records". Earth and Planetary Science Letters...

Sonzogni C. Interhemispheric synchrony of the last deglaciation inferred from alkenone palaeothermometry. Nature 385, 707-710 (1997). Bard E, Arnold M, Maurice...

"Enhanced climate variability during the last millennium recorded in alkenone sea surface temperatures of the northwest Pacific margin". Global and Planetary...

considerations (especially δ18O); the Mg/Ca ratio of foram tests, and alkenones, are also useful. Often, many are used in conjunction to get a multi-proxy...

composition of alkenones often reflect the isotopic enrichment or depletion of the surrounding environment, and the δD values of alkenones in different...

University of Washington 2015 The Greenhouse Emiliania huxleyi Coccolithophore Alkenone production, Algal blooms 167.7 Mb 38,554 Joint Genome Institute 2013 The...

with palaeoglacier presented. As for ocean sediments, the variations of alkenone levels and faunal abundances were measured to model paleotemperatures in...

estimates off the West African coast through biochemical indicators known as alkenones (Sachs 2005) Warming of the subsurface ocean in the subpolar North Atlantic...

surface temperatures. This included studying whether the 14C ages of alkenones could be used to estimate paleotemperature, as lateral transport can cause...

diagenetically altered (e.g. planktonic foraminifera) or absent (e.g. alkenones). TEX86 has been extensively used to reconstruct Eocene (55-34Ma) SST...

providing simple syntheses of conjugated (E,E)-dienes and conjugated (E)-alkenones", Tetrahedron Lett., 32 (30): 3655–3658, doi:10.1016/s0040-4039(00)79758-9...

of the Horn of Africa. They took cores of marine sediment, testing for alkenones, and concluded that about 70,000 years ago this region experienced a change...

surface circulation in the East Equatorial South-Atlantic - Evidence from alkenone sea-surface temperatures". Paleoceanography. 10 (2): 197–219. Bibcode:1995PalOc...

radiocarbon-based assessment of the preservation characteristics of crenarchaeol and alkenones from continental margin sediments" (PDF). Organic Geochemistry. Advances...