The climate record inverted from borehole temperatures in Slovenia

Rajver, Dušan; Šаfanda, Jan; Shen, P.Y.

doi:10.1016/s0040-1951(98)00045-6

Cited by 31 publications

(23 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Consequently the cooling trends observed in our results, for the decades prior to 1970, cannot be attributed to the spurious effects of the null hypothesis. Examples of cooling trends similar to those found in the present work can also be seen in the results reported for several localities in Europe and North America (Bodri and Cermak, 1995;Rajver et al, 1998;Stulc et al, 1998;Golovanova et al, 2001). Fig.…”

Section: Results Of Functional Space Inversionsupporting

confidence: 89%

Climate Changes of the Recent Past in the South American Continent: Inferences Based on Analysis of Borehole Temperature Profiles

Hamza¹,

Vieira²

2011

Climate Change - Geophysical Foundations and Ecological Effects

View full text Add to dashboard Cite

Section: Results Of Functional Space Inversionsupporting

confidence: 89%

Climate Changes of the Recent Past in the South American Continent: Inferences Based on Analysis of Borehole Temperature Profiles

Hamza¹,

Vieira²

2011

Climate Change - Geophysical Foundations and Ecological Effects

View full text Add to dashboard Cite

“…The course of the last 500-year climatic history in Hungary is to the some degree confirmed also by the GST reconstructions by Rajver et al (1998) for a suite of boreholes from the north-eastern part of Slovenia (45.5 -46.7jN, 14.6 -16.2jE). As for the Lj-1, borehole inversion was performed by the functional space inversion method and embraced period from 1500 AD to the present.…”

Section: Centurysupporting

confidence: 55%

“…In the last two decades, numerous papers appeared reporting that temperature -depth records in drillholes may contain a certain climatic signal, which can be extracted by inverse methods (e.g. Cermak, 1971;Shen and Beck, 1992;Cermak, 1995, 1997;Huang and Pollack, 1997;Rajver et al, 1998). As geothermal borehole measurements are generally available from many regions on all continents, they may represent a useful tool for climatic reconstructions in areas less covered by traditional climatic investigations.…”

Section: Introductionmentioning

confidence: 99%

Climate change of the last 2000 years inferred from borehole temperatures: data from Hungary

Bodri¹,

Dövényi²

2004

Global and Planetary Change

View full text Add to dashboard Cite

Ground surface temperature (GST) history, reflecting past climate conditions in Hungary, was evaluated by analysing the excursions left on the present-day temperature -depth distribution measured by precise temperature logging in 20 boreholes. These data were used to assess climatic changes over the last two millennia. We inverted the temperature -depth data using the algorithm by Bodri and Cermak [Global Planet. Change 11 (1995) 111]. Four main episodes can be distinguished: a warm period around 0 AD, extended cold conditions in the 6 -16th centuries, a general warming culminated near 1850 and the cooling since then. The verification of the GST assessment was accomplished by independent data from historical sources and the GST reconstructions in surrounding Slovakia and Slovenia. The long cold conditions in the Middle Ages and the absence of the Little Climatic Optimum seem to be generic feature of the climate in Hungary. In their more recent parts, the obtained GST histories are consistent with the meteorological records in the area. D

show abstract

“…In addition, potential undesirable effects of the null hypothesis are minimized by limiting the GST history to periods compatible with reliable subsurface temperature data. Examples of cooling trends similar to those found in the present work can also be seen in the results reported for several localities in Europe and North America (Bodri and Cermak, 1995;Gosnold et al, 1997;Rajver et al, 1998;Stulc et al, 1998;Golovanova et al, 2001). Functional space inversion method was employed in analysis of temperaturedepth profiles for 14 localities distributed over the three main geographic zones of Brazil.…”

Section: Results Of Functional Space Inversionsupporting

confidence: 90%

Surface thermal perturbations of the recent past at low latitudes – inferences based on borehole temperature data from Eastern Brazil

2007

View full text Add to dashboard Cite

Abstract. Borehole temperature data from the eastern parts of Brazil has been examined in an attempt to extract information on surface thermal perturbations of the recent past at low latitudes. Forward models were employed in the analysis of temperature logs from 17 localities and, in addition, Bayesian inverse modeling was carried out for data from 14 selected sites. The model results have allowed determination of the magnitude as well as the duration of ground surface temperature (GST) changes in three major geographic zones of Brazil. Prominent among such changes are the warming episodes that occurred over much of the subtropical highland regions in the southeastern parts of Brazil. The present magnitude of GST changes in this region are in the range of 2 to 3.5 • C but have had their beginning during the early decades of the 20th century. Nearly similar trends are also seen in temperature-depth profiles of bore holes in the subtropical humid zones of the interior and coastal areas of southern Brazil. The data from semi arid zones of northeast Brazil also indicate occurrence of surface warming events but the magnitudes are in the range of 1.4 to 2.2 • C while the duration of the warming event is larger, extending back into the last decades of the 19th century. There are indications that changes in both climate and vegetation cover contribute to variations in GST. Thus the magnitudes of GST variations are relatively large in localities which have undergone changes in vegetation cover. Also there are indications that GST changes are practically insignificant in areas of tropical rain forest. Another important result emerging from model studies is that the climate was relatively cooler during the 17th and 18th centuries. The climate histories, deduced from geothermal data, are found to be consistent with results of available meteorological records in southern Brazil. Comparative studies also indicate that the magnitudes and duration of recent climate changes in southern and eastern Brazil are similar to those found in other continental areas such as North America, Asia and Europe.Correspondence to: V. M. Hamza (hamza@on.br)

show abstract

The climate record inverted from borehole temperatures in Slovenia

Cited by 31 publications

References 28 publications

Climate Changes of the Recent Past in the South American Continent: Inferences Based on Analysis of Borehole Temperature Profiles

Climate Changes of the Recent Past in the South American Continent: Inferences Based on Analysis of Borehole Temperature Profiles

Climate change of the last 2000 years inferred from borehole temperatures: data from Hungary

Surface thermal perturbations of the recent past at low latitudes – inferences based on borehole temperature data from Eastern Brazil

Contact Info

Product

Resources

About