Algae Drive Enhanced Darkening of Bare Ice on the Greenland Ice Sheet

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F17%3A10370080" target="_blank" >RIV/00216208:11310/17:10370080 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1002/2017GL075958" target="_blank" >http://dx.doi.org/10.1002/2017GL075958</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/2017GL075958" target="_blank" >10.1002/2017GL075958</a>

Result language
angličtina
Original language name
Algae Drive Enhanced Darkening of Bare Ice on the Greenland Ice Sheet
Original language description
Surface ablation of the Greenland ice sheet is amplified by surface darkening caused by light-absorbing impurities such as mineral dust, black carbon, and pigmented microbial cells. We present the first quantitative assessment of the microbial contribution to the ice sheet surface darkening, based on field measurements of surface reflectance and concentrations of light-absorbing impurities, including pigmented algae, during the 2014 melt season in the southwestern part of the ice sheet. The impact of algae on bare ice darkening in the study area was greater than that of nonalgal impurities and yielded a net albedo reduction of 0.038 +/- 0.0035 for each algal population doubling. We argue that algal growth is a crucial control of bare ice darkening, and incorporating the algal darkening effect will improve mass balance and sea level projections of the Greenland ice sheet and ice masses elsewhere.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10618 - Ecology

Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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