TITLE

State of the Ground: Climatology and Changes during the Past 69 Years over Northern Eurasia for a Rarely Used Measure of Snow Cover and Frozen Land

AUTHOR(S)
Groisman, Pavel Ya.; Knight, Richard W.; Razuvaev, Vyacheslav N.; Bulygina, Olga N.; Karl, Thomas R.
PUB. DATE
October 2006
SOURCE
Journal of Climate;Oct2006, Vol. 19 Issue 19, p4933
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Significant climatic changes over northern Eurasia during the twentieth century are revealed in numerous variables including those affecting and characterizing the state of the cryosphere. In addition to commonly used in situ observations of snow cover such as snow depth and snow courses, synoptic archives in the former Soviet Union contain regular daily and semidaily reports about the state of the ground in the area surrounding the station. Information about frozen, dry, wet, ponded, and snow-covered land, and in the case of snow-covered land, about the characteristics of snow cover, is available in these reports. A new Global Synoptic Data Network (GSDN) consisting of 2100 stations within the boundaries of the former Soviet Union created jointly by the National Climatic Data Center (NCDC) and Russian Institute for Hydrometeorological Information (RIHMI) was used to assess the climatology of snow cover, frozen and unfrozen ground reports, and their temporal variability for the period from 1936 to 2004. Comparison with satellite measurements of snow cover extent is also presented. During the second half of the twentieth century and over many regions in northern Eurasia, an increase in unfrozen ground conditions (5 days since 1956 over the Russian Federation) was observed. The most prominent changes occurred in the spring season in Siberia and the Far East north of 55°N during April and May by 3 to 5 days, which constitute a 15%–35% change in these regions compared to long-term mean values. Since the beginning of the dataset, surface temperature changes in high latitudes have not been monotonic. As a result, linear trend analyses applied to the entire period of observations can lead to paradoxical conclusions. Specifically, changes in snow cover extent during the 1936–2004 period cannot be linked with “warming” (particularly with the Arctic warming) because in this particular period the Arctic warming was absent.
ACCESSION #
22645809

 

Related Articles

  • An analysis of present and future seasonal Northern Hemisphere land snow cover simulated by CMIP5 coupled climate models. Brutel-Vuilmet, C.; Ménégoz, M.; Krinner, G. // Cryosphere;2013, Vol. 7 Issue 1, p67 

    The 20th century seasonal Northern Hemisphere (NH) land snow cover as simulated by available CMIP5 model output is compared to observations. On average, the models reproduce the observed snow cover extent very well, but the significant trend towards a reduced spring snow cover extent over the...

  • Greenland Ice Sheet Surface Air Temperature Variability: 1840–2007. Box, Jason E.; Yang, Lei; Bromwich, David H.; Bai, Le-Sheng // Journal of Climate;Jul2009, Vol. 22 Issue 14, p4029 

    Meteorological station records and regional climate model output are combined to develop a continuous 168-yr (1840–2007) spatial reconstruction of monthly, seasonal, and annual mean Greenland ice sheet near-surface air temperatures. Independent observations are used to assess and...

  • Urbanization Effects on Observed Surface Air Temperature Trends in North China. Guoyu Ren; Yaqing Zhou; Ziying Chu; Jiangxing Zhou; Aiying Zhang; Jun Guo; Xuefeng Liu // Journal of Climate;Mar2008, Vol. 21 Issue 6, p1333 

    A dataset of 282 meteorological stations including all of the ordinary and national basic/reference surface stations of north China is used to analyze the urbanization effect on surface air temperature trends. These stations are classified into rural, small city, medium city, large city, and...

  • EUROPE: Strongest official climate statement from IPCC.  // Earth Island Journal;Spring2007, Vol. 22 Issue 1, p8 

    The article focuses on a report entitled "Climate Change 2007: The Physical Science Basis," by the working Group of the Intergovernmental Panel on Climate Change in Europe. Some of the conclusions stated in the report include, the global atmospheric concentrations of carbon dioxide, methane, and...

  • Regional Contrasts of the Warming Rate over Land Significantly Depend on the Calculation Methods of Mean Air Temperature. Wang, Kaicun; Zhou, Chunlüe // Scientific Reports;7/24/2015, p12324 

    Global analyses of surface mean air temperature (Tm) are key datasets for climate change studies and provide fundamental evidences for global warming. However, the causes of regional contrasts in the warming rate revealed by such datasets, i.e., enhanced warming rates over the northern high...

  • Do Changes in the Midlatitude Circulation Have Any Impact on the Arctic Surface Air Temperature Trend? Graversen, R. G. // Journal of Climate;Oct2006, Vol. 19 Issue 20, p5422 

    The warming of the near-surface air in the Arctic region has been larger than the global mean surface warming. There is general agreement that the Arctic amplification of the surface air temperature (SAT) trend to a considerable extent is due to local effects such as the retreat of sea ice,...

  • The impact of climate change on the snow cover pattern in Estonia. Jaagus, Jaak // Climatic Change;May/Jun97, Vol. 36 Issue 1/2, p65 

    Deals with problems of temporal and spatial variability of snow cover duration, of correlation between snow and winter mean air temperature pattern and of the impact of climate change on the snow pattern in Estonia. Time series of raster images; Determination of general regularities of snow...

  • Climatic features of the Belaya River runoff formation. Krasnogorskaya, N.; Fashchevskaya, T.; Golovina, A.; Ferapontov, Yu.; Zhdanova, N. // Russian Meteorology & Hydrology;Feb2012, Vol. 37 Issue 1, p57 

    Spatiotemporal regularities of changes in mean annual air temperature and annual precipitation amount values for the Belaya River basin were revealed on the basis of the analysis of statistical homogeneity of their long-term series. It is established that warming has occurred by now and the...

  • Snow has secrets to tell. Carey, John // National Wildlife (World Edition);Dec91/Jan92, Vol. 30 Issue 1, p4 

    Looks at the clues snow can hide in its crystals about climate change. Impact of Asian snow on rest of world's climate; Benefits of snow tunnels for small rodents such as tasty voles; Evidence of carbon dioxide and pollutants; Possible causes of the Ice Ages; Possible importance of amount of...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics