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On precipitation monitoring with theoretical statistical distributions


Cindrić Kalin, Ksenija; Juras, Josip; Pasarić, Zoran
On precipitation monitoring with theoretical statistical distributions // Theoretical and applied climatology (2018) doi:10.1007/s00704-018-2477-6 (znanstveni, prihvaćen)


Naslov
On precipitation monitoring with theoretical statistical distributions

Autori
Cindrić Kalin, Ksenija ; Juras, Josip ; Pasarić, Zoran

Vrsta, podvrsta
Radovi u časopisima, znanstveni

Izvornik
Theoretical and applied climatology (2018)

Status rada
Prihvaćen

Ključne riječi
Standardized precipitation index ; Compound Poisson exponential ; Square root normal distribution ; CLIMAT ; Gamma distribution

Sažetak
A common practice in meteorological drought monitoring is to transform the observed precipitation amounts to the standardised precipitation index (SPI). Though the gamma distribution is usually employed for this purpose, some other distribution may be used, particularly in regions where zero precipitation amounts are recorded frequently. In this study, two distributions are considered alongside with the gamma distribution: the compound Poisson exponential distribution (CPE) and the square root normal distribution (SRN). They are fitted to monthly precipitation amounts measured at 24 stations in Croatia in the 55-year-long period (1961–2015). At five stations, long-term series (1901–2015) are available and they have been used for a more detailed investigation. The accommodation of the theoretical distributions to empirical ones is tested by comparison of the corresponding empirical and theoretical ratios of the skewness and the coefficient of variation. Furthermore, following the common approach to precipitation monitoring (CLIMAT reports), the comparison of the empirical and theoretical quintiles in the two periods (1961–1990 and 1991–2015) is examined. The results from the present study reveal that it would be more appropriate to implement theoretical distributions in such climate reports, since they provide better evaluation for monitoring purposes than the current empirical distribution. Nevertheless, deciding on an optimal theoretical distribution for different climate regimes and for different time periods is not easy to accomplish. With regard to Croatian stations (covering different climate regimes), the CPE or SRN distribution could also be the right choice in the climatological practice, in addition to the gamma distribution.

Izvorni jezik
Engleski

Znanstvena područja
Geofizika



POVEZANOST RADA


Projekt / tema
HRZZ-IP-2013-11-2831 - Klima jadranske regije u njenom globalnom kontekstu (Mirko Orlić, )

Ustanove
Državni hidrometeorološki zavod,
Prirodoslovno-matematički fakultet, Zagreb

Profili:

Avatar Url Josip Juras (autor)

Avatar Url Zoran Pasarić (autor)

Avatar Url Ksenija Cindrić Kalin (autor)

Citiraj ovu publikaciju

Cindrić Kalin, Ksenija; Juras, Josip; Pasarić, Zoran
On precipitation monitoring with theoretical statistical distributions // Theoretical and applied climatology (2018) doi:10.1007/s00704-018-2477-6 (znanstveni, prihvaćen)
Cindrić Kalin, K., Juras, J. & Pasarić, Z. (2018) On precipitation monitoring with theoretical statistical distributions. Prihvaćen za objavljivanje u Theoretical and applied climatology. [Preprint] doi:10.1007/s00704-018-2477-6.
@unknown{unknown, year = {2018}, DOI = {10.1007/s00704-018-2477-6}, keywords = {Standardized precipitation index, Compound Poisson exponential, Square root normal distribution, CLIMAT, Gamma distribution}, journal = {Theoretical and applied climatology}, doi = {10.1007/s00704-018-2477-6}, title = {On precipitation monitoring with theoretical statistical distributions}, keyword = {Standardized precipitation index, Compound Poisson exponential, Square root normal distribution, CLIMAT, Gamma distribution} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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