Homogenization of Temperature Time Series of Western Greece

Kolokythas, K.; Argiriou, Athanassios A.

doi:10.1007/978-3-642-29172-2_76

Cited by 2 publications

(2 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The identification of breakpoints in the various series analysed helped in defining homogenous periods in the FWI time-series that could be used to test trend-free cross correlations with fire statistics, rather than making a thorough analysis of the observed FWI variability. It is interesting to observe that the identified breakpoints of the FWI series for Greece that are presented in this paper (in 1966 and 1997 respectively) match, in the broad sense, the respective breakpoints of the homogenized air temperature time series of western Greece in early 70s and middle 90s (Kolokythas and Argiriou, 2013). Similarly, the mean annual air temperature in Greece was found to exhibit cooling trends from early 50s to mid-70s, then stabilizing at low levels before increasing again after early 90s (Nastos et al, 2011).…”

Section: Discussionsupporting

confidence: 64%

Temporal variations and change of forest fire danger in Europe in 1960–2012

Venäläinen¹,

Korhonen²,

Koutsias³

et al. 2013

Preprint

View full text Add to dashboard Cite

Abstract. Understanding how fire-weather danger indices changed in the past, and detecting how changes affected forest fire activity is important in changing climate. We used the Canadian Fire Weather Index (FWI), calculated from two reanalysis datasets, ERA 40 and ERA Interim, to examine the temporal variation of forest fire danger in Europe in 1960–2012. Additionally, we used national forest-fires statistical data from Greece and Spain to relate fire danger and fire activity. There is no obvious trend in fire danger for the time period covered by ERA 40 (1960–1999) whereas for the period 1980–2012 covered by ERA Interim, the mean FWI and the number of high fire risk days shows an increasing trend which is significant at the 99% confidence level for South and East Europe. The cross-correlation calculated at national level in Greece and Spain between mean yearly area burned and mean FWI of the current season is of the order 0.5–0.6, and demonstrates the importance of the fire-season weather on forest fires. Our results show that, fire risk is multifaceted, and factors like changes in fire fighting capacity, ignition patterns, or landscapes might have played a role in forest fires trends. However, weather trends remain as important determinants of forest fires.

show abstract

Section: Discussionsupporting

confidence: 64%

Temporal variations and change of forest fire danger in Europe in 1960–2012

Venäläinen¹,

Korhonen²,

Koutsias³

et al. 2013

Preprint

View full text Add to dashboard Cite

show abstract

“…This is the main reason for the identification of significant breakpoints in the Spanish data but not in the Greek data. However, respective breaks in the mean air temperature time series over various regions in Greece in the early 1970s and middle 1990s (Nastos et al, 2011;Kolokythas and Argiriou, 2013) and in the precipitation time series between 1970 and 1980 (in the broader sense) (Pnevmatikos and Katsoulis, 2006;Feidas et al, 2007;Kalimeris et al, 2012) lead to the conclusion that an actual break in FWI series in the decade between 1970 and 1980 is also plausible. It should be noticed, however, that further testing is required in order to identify whether the breakpoints are artificial and due to exogenous variables or whether they actually indicate altering periods in the FWI values.…”

Section: Discussionmentioning

confidence: 99%

Temporal variations and change in forest fire danger in Europe for 1960–2012

Venäläinen

Korhonen

Hyvärinen

et al. 2014

Nat. Hazards Earth Syst. Sci.

View full text Add to dashboard Cite

Abstract. Understanding how fire weather danger indices changed in the past and how such changes affected forest fire activity is important in a changing climate. We used the Canadian Fire Weather Index (FWI), calculated from two reanalysis data sets, ERA-40 and ERA Interim, to examine the temporal variation of forest fire danger in Europe in 1960–2012. Additionally, we used national forest fire statistics from Greece, Spain and Finland to examine the relationship between fire danger and fires. There is no obvious trend in fire danger for the time period covered by ERA-40 (1960–1999), whereas for the period 1980–2012 covered by ERA Interim, the mean FWI shows an increasing trend for southern and eastern Europe which is significant at the 99% confidence level. The cross correlations calculated at the national level in Greece, Spain and Finland between total area burned and mean FWI of the current season is of the order of 0.6, demonstrating the extent to which the current fire-season weather can explain forest fires. To summarize, fire risk is multifaceted, and while climate is a major determinant, other factors can contribute to it, either positively or negatively.

show abstract

Homogenization of Temperature Time Series of Western Greece

Cited by 2 publications

References 3 publications

Temporal variations and change of forest fire danger in Europe in 1960–2012

Temporal variations and change of forest fire danger in Europe in 1960–2012

Temporal variations and change in forest fire danger in Europe for 1960–2012

Contact Info

Product

Resources

About