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14 results for “light extinction”
North Temperate Lakes LTER: Light Extinction 1981 - current
A light (PAR) extinction coefficient is calculated for the water column for the eleven primary lakes (Allequash, Big Muskellunge, Crystal, Sparkling, Trout, Crystal Bog, Trout Bog, Mendota, Monona, Wingra, and Fish) and two additional lakes near Madison, Wisconsin (Waubesa and Kegonsa). Data exists only for the Trout Lake-area lakes through 2018. Beginning in 2019, the Madison-area lakes were added. The fraction of surface light is computed at 0.25-m to 1-m depth intervals depending on the lake. The light (PAR) extinction coefficient is calculated by regressing ln(fraction of light(z)) on depth z. Sampling Frequency: fortnightly during ice-free season - every 6 weeks during ice-covered season Number of sites: 13. The raw light data can be found in two other datasets: https://portal.edirepository.org/nis/mapbrowse?scope=knb-lter-ntl&identifier=29 & https://portal.edirepository.org/nis/mapbrowse?scope=knb-lter-ntl&identifier=401
Mutual extinction and transparency of multiple incident light waves
<p>The basic publication is:<br> A. Lagendijk, A.P. Mosk, and W.L. Vos<br> Europhys. Lett., 130, 34002 (2020)<br> "Mutual extinction and transparency of<br> multiple incident light waves"<br> <br> We have uploaded to the Zenodo database all data enabling everyone to reuse our data, and<br> to reproduce all the figures of our paper</p> <p>The upload contains the file "readme.txt" explaining the content of the upload</p>
Figure 4 in Nikolaj Livanow's historical collection sheds new light on potential local extinctions and host association in Hirudinea
Figure 4. Historical sample of Acanthobdella peledina Grube, 1851 (lot EEZM 387 "Onega Lake. N. Livanow, 1902"). These specimens are the only preserved part of Livanow's general sample that was used for preparation of the classical monograph on this species (Livanow 1906). (a) Anterior part of the incomplete specimen and trace of its lost posterior part by albumin-gelatin gel. (b-d) Three complete specimens. Scale bar = 2.5 mm. Photo: T. A. Eliseeva and A. V. Bespyatykh.
Figure 3 in Nikolaj Livanow's historical collection sheds new light on potential local extinctions and host association in Hirudinea
Figure 3. Extract from the Systematic Catalogue of Collections and Preparations of Invertebrates of the Zootomy Cabinet Museum of the Imperial Kazan University (Meyer 1915). (a) Title page. (b) Selected entries [In Russian] for the specimens under discussion with our English translations and remarks (red letters). Photos: T. A. Eliseeva and A. V. Bespyatykh.
Figure 2 in Nikolaj Livanow's historical collection sheds new light on potential local extinctions and host association in Hirudinea
Figure 2. Collection vials with selected samples from the historical Hirudinea collection (EEZM): (a) Acanthobdella peledina Grube, 1851 (lot EEZM 387 "Onega Lake. N. Livanow, 1902"); (b) Hirudo medicinalis Linnaeus, 1758 (lot EEZM 406-407 "Kazan. E. Meyer, 1891"); and (c) Glossiphonia grubei (Lukin & Epshtein, 1959) (lot EEZM 397 "Lake Baikal (Maloe More [Strait]). V. Garjaew, 1899"). Photos: T. A. Eliseeva and A. V. Bespyatykh.
Figure 1 in Nikolaj Livanow's historical collection sheds new light on potential local extinctions and host association in Hirudinea
Figure 1. Cabinet with the historical Hirudinea collection in the EEZM – Edward Eversman Zoology Museum and Herbarium, Kazan (Volga Region) Federal University (formerly Zootomy Cabinet Museum of the Imperial Kazan University), prepared by Nikolaj A. Livanow and Eduard A. Meyer. The red numbers indicate exposition vials with samples of Acanthobdella peledina Grube, 1851 (1), Hirudo medicinalis Linnaeus, 1758 (2), and Glossiphonia grubei (Lukin & Epshtein, 1959) (3). Photo: T. A. Eliseeva and A. V. Bespyatykh.
Data archive for the peer-reviewed journal article "Detailed characterization of the CAPS single scattering albedo monitor (CAPS PMssa) as a field-deployable instrument for measuring aerosol light absorption with the extinction-minus-scattering method"
<p>Data archive accompanying the peer-reviewed journal article "Detailed characterization of the CAPS single scattering albedo monitor (CAPS PMssa) as a field-deployable instrument for measuring aerosol light absorption with the extinction-minus-scattering method". In 2020 this article was accepted for publication in the journal <em>Atmospheric Measurement Techniques</em>. Data are uploaded in the form of ascii text files, Igor Pro experiment files (.pxp), and Jupyter notebook files. In addition, a Jupyter notebook file is included containing an implementation of the error model used in the paper.</p>
Variations of the urban PM2.5 chemical components and corresponding light extinction for three heating seasons in the Guanzhong Plain, China
<p>The basic data of the thesis “Variations of the urban PM2.5 chemical components and corresponding light extinction for three heating seasons in the Guanzhong Plain, China”.</p>
Observation of mutual extinction and transparency in light scattering
<p>The basic publication is:<br> A. Rates, A. Lagendijk, O. Akdemir, A.P. Mosk, and W.L. Vos, "Observation of mutual extinction and transparency in light scattering", Phys. Rev. A <strong>104</strong>, 043515. DOI: 10.1103/PhysRevA.104.043515.<br> <br> We have uploaded to the Zenodo database all data enabling everyone to reuse our data, and to reproduce all the figures of our paper.</p> <p>The upload contains the file "Metadata.txt" explaining the content of the upload.</p>
Data from: Spatially explicit analysis sheds new light on the Pleistocene megafaunal extinction in North America
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FIGURE 6. Scale-shaped sclerites under polarized light showing concentric extinction patterns. A in A review of the genus Trichogorgia (Cnidaria, Octocorallia), including descriptions of new species
FIGURE 6. Scale-shaped sclerites under polarized light showing concentric extinction patterns. A: Stephanogorgia diomedea (USNM 75108); B: Trichogorgia lyra (USNM 52875); C: S. wainwrighti (USNM 1112682); D: T. muzikae sp. nov. (USNM 77155, holotype).
Measurement report: The importance of biomass burning in light extinction and direct radiative effect of urban aerosol during the COVID-19 lockdown in Xi'an, China
<p>To explore the impacts of anthropogenic emissions on aerosol optical properties and direct radiative effect (DRE), a series of real-time measurements was conducted in an urban area of China before and during the lockdown of Coronavirus Disease 2019. The generalized addictive model analysis shows that the light extinction coefficient (<em>b</em><sub>ext</sub>) decreased largely during the lockdown due to the sharp reductions in anthropogenic emissions. Organic aerosol was the largest contributor to <em>b</em><sub>ext</sub> based on the ridge regression analysis. A hybrid environmental receptor model combining with chemical and optical variables shows that <em>b</em><sub>ext</sub> from biomass burning increased in the lockdown due to the undiminished needs of residential cooking and heating in winter. Biomass burning contributed the largest positive effect to aerosol DRE in the atmosphere during the lockdown, highlighting the importance of controlling biomass burning for mitigating climate change in China in the future.</p>
Caucasian treasure: genomics sheds light on the evolution of half-extinct Sevan trout, Salmo ischchan, species flock
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Figure 5 in Nikolaj Livanow's historical collection sheds new light on potential local extinctions and host association in Hirudinea
Figure 5. Historical samples of Hirudo medicinalis Linnaeus, 1758 (lot EEZM 406-407 "Kazan. E. Meyer, 1891") and Glossiphonia grubei (Lukin & Epshtein, 1959) (lot EEZM 397 "Lake Baikal (Maloe More [Strait]). V. Garjaew, 1899"). (a) H. medicinalis (specimen No 1; dorsal view). (b) H. medicinalis (specimen No 2; ventral view). (c) G. grubei (dorsal view). Scale bar = 10 mm. Photo: A. V. Bespyatykh.
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