Výsledky vyhledávání

Uncertainty of total solar irradiance: an assessment of the last twenty years of space radiometry

Autor: C Fröhlich, M Anklin

Publikováno v: Metrologia. 37:387-391

A complete set of total solar irradiance measurements from space is available dating from November 1978, yielding a time series of more than twenty years. From measurements made by different space radiometers (HF on NIMBUS-7, ACRIM I on SMM, ACRIM II

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5110005d0c3485b2d8e58bf79b41899c
https://doi.org/10.1088/0026-1394/37/5/9

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Assessment of degradation of VIRGO radiometers on board SOHO

Autor: Wolfgang Finsterle, Claus Fröhlich, M. Anklin, S Dewitte, D. Crommelynck

Publikováno v: Metrologia. 35:685-688

The determination of the total solar irradiance (TSI) from the SOHO/VIRGO experiment is made by first correcting the time series for all a priori known influences, and then correcting the data for instrumental degradation, using the back-up instrumen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c712d1e4eb08ec1eaa7a1b240ea37b70
https://doi.org/10.1088/0026-1394/35/4/78

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Determination and comparisons of aperture areas using geometric and radiometric techniques

Autor: N J Harrison, M Anklin, Nigel Fox, J E Martin, B Shipp

Publikováno v: Metrologia. 35:461-464

One of the major uncertainties associated with radiance and irradiance measurements stems from the aperture system and a knowledge of the aperture area. High-quality apertures, with a roundness of 0.1 µm, can now be manufactured by diamond-turning t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::913cad9c7f8945d44c5861304ab5e89a
https://doi.org/10.1088/0026-1394/35/4/43

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CO2record between 40 and 8 kyr B.P. from the Greenland Ice Core Project ice core

Autor: J. M. Barnola, Jakob Schwander, M. Anklin, Bernhard Stauffer, A. Fuchs, D. Raynaud, J. Tschumi

Publikováno v: Anklin, M.; Schwander, J.; Stauffer, B.; Tschumi, J.; Fuchs, A.; Barnola, J.M.; Raynaud, D. (1997). CO2 record between 40 and 8 kyr B.P. from the Greenland Ice Core Project ice core. Journal of Geophysical Research: Oceans, 102(C12), pp. 26539-26545. American Geophysical Union 10.1029/97JC00182

CO2 ice-core records show an increase in the atmospheric concentration of 80–100 parts per million by volume (ppmv) from the last glacial maximum (LGM) to the early Holocene. We present CO2 measurements performed on an ice core from central Greenla

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::89c567969b6a2c1f272513402f1b024f
https://doi.org/10.1029/97jc00182

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3.1.1 Vier Rohre messen besser als zwei – die Einführung des weltweit ersten kommerziell erhältlichen 4-Rohr-Coriolis-Massedurchflussmessgeräts

Autor: Ch. Huber, M. Nuber, M. Braun, M: Anklin

Publikováno v: Tagungsband.

The introduction of the Coriolis mass flow measuring principle was a milestone in instrumentation. It not only allowed for the most accurate direct mass flow measurement in situ, but also introduced the possibility to measure density at the same time

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b5c37c4193055f67b1384100dc70c983
https://doi.org/10.5162/sensoren2012/3.1.1

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North Atlantic oscillation dynamics recorded in Greenland Ice Cores

Autor: Thomas F. Stocker, Christof Appenzeller, M. Anklin

Carefully selected ice core data from Greenland can be used to reconstruct an annual proxy North Atlantic oscillation (NAO) index. This index for the past 350 years indicates that the NAO is an intermittent climate oscillation with temporally active

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::71fd137d31ee1ca0e1b813e12d947706

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CO2 evolution during the last millennium as recorded by Antarctic and Greenland ice

Autor: Bernhard Stauffer, Dominique Raynaud, M. Anklin, J. M. Barnola, Jakob Schwander, J. Porcheron

Publikováno v: Tellus B: Chemical and Physical Meteorology. 47:264

In order to study in detail the pre-industrial CO 2 level (back to about 900 AD) and its temporal variations, several ice cores from Greenland and Antarctica were analysed in two laboratories, and compared with previous records. The agreement between

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f22f188937be272f8b2d9626b29d2dac
https://doi.org/10.3402/tellusb.v47i1-2.16046

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Processes affecting the CO2 concentrations measured in Greenland ice

Autor: Jean-Marc Barnola, Bernhard Stauffer, M. Anklin, Dominique Raynaud, Jakob Schwander

Publikováno v: Tellus B: Chemical and Physical Meteorology. 47:461

Detailed CO 2 measurements on ice cores from Greenland and Antarctica show different mean CO 2 concentrations for samples at the same gas age. The deviation between Antarctic and Greenland CO 2 records raises up to 20 ppmv during the last millennium.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::26892d7bc65118cc44f3d7492a8638f5
https://doi.org/10.3402/tellusb.v47i4.16061

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Pattern of annual snow accumulation along a west Greenland flow line: no significant change observed during recent decades

Autor: Klaus Geis, M. Anklin, Dietmar Wagenbach, Bernhard Stauffer

Publikováno v: Tellus B; Vol 46, No 4 (1994)

At 10 positions on a traverse along a West Greenland flow line, shallow drillings and pit studies were performed in summer 1990. Continuous in situ hydrogen peroxide analyses on these samples allowed the seasonal firn stratigraphy to be established a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::02c204113ea914edb46014121820ff9f
https://doi.org/10.3402/tellusb.v46i4.15804

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