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  • 1
    Online Resource
    Online Resource
    The urban climate of the largest cities of the European Arctic
    Elsevier BV ; 2023
    In:  Urban Climate Vol. 48 ( 2023-03), p. 101423-
    Details
    In: Urban Climate, Elsevier BV, Vol. 48 ( 2023-03), p. 101423-
    Type of Medium: Online Resource
    ISSN: 2212-0955
    URL: Article
    DOI: 10.1016/j.uclim.2023.101423
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2023
    detail.hit.zdb_id: 2683732-8
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  • 2
    Online Resource
    Online Resource
    Trends in normalized difference vegetation index (NDVI) associated with urban development in northern West Siberia
    Copernicus GmbH ; 2016
    In:  Atmospheric Chemistry and Physics Vol. 16, No. 15 ( 2016-08-01), p. 9563-9577
    Details
    In: Atmospheric Chemistry and Physics, Copernicus GmbH, Vol. 16, No. 15 ( 2016-08-01), p. 9563-9577
    Abstract: Abstract. Exploration and exploitation of oil and gas reserves of northern West Siberia has promoted rapid industrialization and urban development in the region. This development leaves significant footprints on the sensitive northern environment, which is already stressed by the global warming. This study reports the region-wide changes in the vegetation cover as well as the corresponding changes in and around 28 selected urbanized areas. The study utilizes the normalized difference vegetation index (NDVI) from high-resolution (250 m) MODIS data acquired for summer months (June through August) over 15 years (2000–2014). The results reveal the increase of NDVI (or “greening”) over the northern (tundra and tundra-forest) part of the region. Simultaneously, the southern, forested part shows the widespread decrease of NDVI (or “browning”). These region-wide patterns are, however, highly fragmented. The statistically significant NDVI trends occupy only a small fraction of the region. Urbanization destroys the vegetation cover within the developed areas and at about 5–10 km distance around them. The studied urbanized areas have the NDVI values by 15 to 45 % lower than the corresponding areas at 20–40 km distance. The largest NDVI reduction is typical for the newly developed areas, whereas the older areas show recovery of the vegetation cover. The study reveals a robust indication of the accelerated greening near the older urban areas. Many Siberian cities become greener even against the wider browning trends at their background. Literature discussion suggests that the observed urban greening could be associated not only with special tending of the within-city green areas but also with the urban heat islands and succession of more productive shrub and tree species growing on warmer sandy soils.
    Type of Medium: Online Resource
    ISSN: 1680-7324
    URL: Article
    DOI: 10.5194/acp-16-9563-2016
    Language: English
    Publisher: Copernicus GmbH
    Publication Date: 2016
    detail.hit.zdb_id: 2069847-1
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  • 3
    Online Resource
    Online Resource
    Satellite archives reveal abrupt changes in behavior of Helheim Glacier, southeast Greenland
    Cambridge University Press (CUP) ; 2016
    In:  Journal of Glaciology Vol. 62, No. 231 ( 2016-02), p. 137-146
    Details
    In: Journal of Glaciology, Cambridge University Press (CUP), Vol. 62, No. 231 ( 2016-02), p. 137-146
    Abstract: Rapid changes in Helheim Glacier and other Greenland outlet glaciers since 2000 are well-known, but knowledge on earlier decades is fragmentary. Here we exploit the satellite image archives to produce and analyze a monthly-to-seasonal record of Helheim Glacier front position, 1980–2011. Statistical analysis identifies decadal periods with abrupt changes in variability and mean. The record also reveals evidence of volatile advance/retreat behavior in the 1980s. In one of several cases of large-amplitude subannual changes, the glacier front ‘surged’ forward in 1984/85, advancing ~6 km within a few months – surpassing its Little Ice Age maximum position – and afterward retreated ~5 km within a few weeks. These findings challenge the prevailing view of front position stability in the decades before the multi-year retreat in the early 2000s. Cold conditions including rigid ice mélange appear to be a factor in the high-amplitude seasonal advances in the 1980s. However the magnitude and abruptness of the changes in the record cannot be explained solely as a climatic response, such that glacio-dynamics must be invoked. Further, the volatile advance/retreat behavior in the cold 1980s resulted in increased dynamic ice loss, complicating the interpretation of increased calving activity as a response to warming.
    Type of Medium: Online Resource
    ISSN: 0022-1430 , 1727-5652
    URL: Article
    DOI: 10.1017/jog.2016.24
    Language: English
    Publisher: Cambridge University Press (CUP)
    Publication Date: 2016
    detail.hit.zdb_id: 242506-3
    detail.hit.zdb_id: 2140541-4
    SSG: 14
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  • 4
    Online Resource
    Online Resource
    Varying climate response across the tundra, forest-tundra and boreal forest biomes in northern West Siberia
    IOP Publishing ; 2019
    In:  Environmental Research Letters Vol. 14, No. 7 ( 2019-07-01), p. 075008-
    Details
    In: Environmental Research Letters, IOP Publishing, Vol. 14, No. 7 ( 2019-07-01), p. 075008-
    Abstract: Satellite studies using the normalized difference vegetation index (NDVI) have revealed changes in northern Eurasian vegetation productivity in recent decades, including greening in tundra and browning in the boreal forests. However, apparent NDVI changes and relationships to climate depend on the temporal and spatial sampling and the biome and forest-land cover type studied. Here we perform a consistent analysis of NDVI and climate across four bioclimatic zones (tundra, forest-tundra, northern and middle taiga) in northern West Siberia (NWS), further stratified into eight forest-land cover types. We utilize NDVI data from the Moderate Resolution Imaging Spectroradiometer and climate reanalysis data from 2000 to 2016, a period including the record warm anomaly in 2016 (+2 °C–5 °C June–July surface air temperature (SAT) across NWS). Statistically significant ( α  = 0.05) correlations were found for two bivariate relationships at the biome level: between NDVImax and June–July surface air temperature (SAT)( r  ∼ +0.79), and between middle taiga NDVImax and July precipitation ( r  ∼ +0.48). No significant statistical relationships were found for the northern taiga and forest-tundra biomes. However, within these biomes we found that deciduous needle-leaf (larch) NDVImax is significantly correlated with July temperature ( r  ∼ +0.48). Qualitatively, spatial composites of NDVI and climate variables were effective for revealing insights and patterns of these relationships at the sub-regional scale. The spatial heterogeneity of NDVI patterns indicates divergent reactions of specific types of vegetation, as well as local effects that are clearly important on the background of a regional climate response.
    Type of Medium: Online Resource
    ISSN: 1748-9326
    URL: Article
    DOI: 10.1088/1748-9326/ab2364
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2019
    detail.hit.zdb_id: 2255379-4
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  • 5
    Online Resource
    Online Resource
    Interaction Between the Warm Subsurface Atlantic Water in the Sermilik Fjord and Helheim Glacier in Southeast Greenland
    Springer Science and Business Media LLC ; 2011
    In:  Surveys in Geophysics Vol. 32, No. 4-5 ( 2011-9), p. 387-396
    Details
    In: Surveys in Geophysics, Springer Science and Business Media LLC, Vol. 32, No. 4-5 ( 2011-9), p. 387-396
    Type of Medium: Online Resource
    ISSN: 0169-3298 , 1573-0956
    URL: Article
    DOI: 10.1007/s10712-011-9130-6
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2011
    detail.hit.zdb_id: 232801-X
    detail.hit.zdb_id: 2017797-5
    SSG: 16,13
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  • 6
    Online Resource
    Online Resource
    ChemInform Abstract: LOESUNGSMITTELEXTRAKTION SAURER, CHLORID‐IONEN ENTHALTENDER EISEN(III)‐LOESUNGEN DURCH PHENYLPHOSPHONSAEUREDIESTER IN ORGANISCHEN LOESUNGSMITTELN
    Wiley ; 1971
    In:  Chemischer Informationsdienst. Organische Chemie Vol. 2, No. 51 ( 1971-12-21)
    Details
    In: Chemischer Informationsdienst. Organische Chemie, Wiley, Vol. 2, No. 51 ( 1971-12-21)
    Type of Medium: Online Resource
    ISSN: 0300-5151 , 2199-2932
    URL: Issue
    URL: Article
    DOI: 10.1002/chin.v2.51
    DOI: 10.1002/chin.197151100
    Language: English
    Publisher: Wiley
    Publication Date: 1971
    detail.hit.zdb_id: 218763-2
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  • 7
    Online Resource
    Online Resource
    Long-term trends in carbon, nutrients and stoichiometry in Norwegian coastal waters: Evidence of a regime shift
    Elsevier BV ; 2013
    In:  Progress in Oceanography Vol. 111 ( 2013-4), p. 113-124
    Details
    In: Progress in Oceanography, Elsevier BV, Vol. 111 ( 2013-4), p. 113-124
    Type of Medium: Online Resource
    ISSN: 0079-6611
    URL: Article
    DOI: 10.1016/j.pocean.2013.01.006
    RVK:
    RB 10402
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2013
    detail.hit.zdb_id: 4062-9
    SSG: 21,3
    SSG: 14
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  • 8
    Online Resource
    Online Resource
    A 5‐year satellite climatology of winter sea ice leads in the western Arctic
    American Geophysical Union (AGU) ; 1998
    In:  Journal of Geophysical Research: Oceans Vol. 103, No. C10 ( 1998-09-15), p. 21723-21734
    Details
    In: Journal of Geophysical Research: Oceans, American Geophysical Union (AGU), Vol. 103, No. C10 ( 1998-09-15), p. 21723-21734
    Abstract: The distribution of openings (leads and polynyas) in polar sea ice is not well known. This study estimates the large‐scale distribution and variability of leads in the Arctic of the western hemisphere in winter, using a 5‐year record of Defense Meteorological Satellite Program thermal‐ and visible‐band imagery. The occurrence (density) and orientation of leads are derived from gridded maps made at 10‐day intervals. Their mean value and interannual, seasonal, and monthly variabilities are estimated. Lead densities are observed to be highest in early winter, decreasing 20% from November through April. The highest densities are observed in the central Canada Basin, and the lowest are in the East Siberian Sea. There is limited interannual variability in the positions of maximum and minimum densities. Preferred lead orientations are identified as generally north‐south in the Beaufort Sea sector and east‐west in the East Siberian Sea sector, with transitional orientations in the intermediate area. The mean distributions of lead density and orientation are observed to be associated with large‐scale mean fields of ice divergence and shear, respectively.
    Type of Medium: Online Resource
    ISSN: 0148-0227
    URL: Article
    DOI: 10.1029/98JC01997
    Language: English
    Publisher: American Geophysical Union (AGU)
    Publication Date: 1998
    detail.hit.zdb_id: 161666-3
    SSG: 16,13
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  • 9
    Online Resource
    Online Resource
    Anomalies in the seasonal cycle of sea level pressure in Iceland and the North Atlantic Oscillation
    American Geophysical Union (AGU) ; 2001
    In:  Geophysical Research Letters Vol. 28, No. 22 ( 2001-11-15), p. 4231-4234
    Details
    In: Geophysical Research Letters, American Geophysical Union (AGU), Vol. 28, No. 22 ( 2001-11-15), p. 4231-4234
    Abstract: This letter presents an analysis of a new homogenized time series of daily mean sea level pressure (SLP) from Reykjavík and Stykkishólmur, Iceland from 1823–1999. Time series statistical techniques including harmonic analysis are used to identify the seasonal march of pressure and its variability through the record. The results are assessed regarding the North Atlantic Oscillation (NAO) index. In addition to the annual cycle, the seasonal march of SLP has an appreciable semi‐annual cycle, as well as anomalies (abrupt rises and falls) occurring at remarkably distinct times in spring and winter. Multidecadal variability is apparent in the seasonal cycle and the anomalies. A shift in intraseasonal variability is observed in recent decades, including an extension of the winter Icelandic Low enhancement period into March. Increasing failure or delay of the “usual” abrupt pressure rise in Iceland in late February has contributed to the unusually positive winter NAO index values since the 1960s.
    Type of Medium: Online Resource
    ISSN: 0094-8276 , 1944-8007
    URL: Article
    DOI: 10.1029/2001GL013596
    Language: English
    Publisher: American Geophysical Union (AGU)
    Publication Date: 2001
    detail.hit.zdb_id: 2021599-X
    detail.hit.zdb_id: 7403-2
    SSG: 16,13
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  • 10
    Online Resource
    Online Resource
    Global Warming and the Arctic
    American Association for the Advancement of Science (AAAS) ; 1996
    In:  Science Vol. 271, No. 5246 ( 1996-01-12), p. 129-129
    Details
    In: Science, American Association for the Advancement of Science (AAAS), Vol. 271, No. 5246 ( 1996-01-12), p. 129-129
    Type of Medium: Online Resource
    ISSN: 0036-8075 , 1095-9203
    URL: Article
    DOI: 10.1126/science.271.5246.129-a
    RVK:
    TA 1000
    RVK:
    WA 15000
    Language: English
    Publisher: American Association for the Advancement of Science (AAAS)
    Publication Date: 1996
    detail.hit.zdb_id: 128410-1
    detail.hit.zdb_id: 2066996-3
    SSG: 11
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