Interannual characteristics of rainfall over Madagascar and its relationship with the Indian Ocean sea surface temperature variation
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F22%3A10453408" target="_blank" >RIV/00216208:11320/22:10453408 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Gc0_tfdc7Z" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Gc0_tfdc7Z</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s00704-022-03950-8" target="_blank" >10.1007/s00704-022-03950-8</a>
Alternative languages
Result language
angličtina
Original language name
Interannual characteristics of rainfall over Madagascar and its relationship with the Indian Ocean sea surface temperature variation
Original language description
Understanding rainfall variability over a region is essential for economic development since it contributes to managing climate-sensitive sectors. This study assesses the interannual characteristics of rainfall over Madagascar and the possible influence of the Indian Ocean (IO) on rainfall patterns between 1950 and 2018, using monthly rainfall data from the Climatic Research Unit. The singular value decomposition analysis was used to examine the effect of IO's sea surface temperature (SST) on the rainfall variability, followed by a composite analysis of vertically integrated moisture flux. Overall, both the wet and dry seasons showed a slight decrease in rainfall trends during the past 69 years. During the wet (dry) season, the central and southeastern (western) IO SST were positively correlated with Madagascar's rainfall. The covariability analysis showed that a positive phase of the Subtropical Indian Ocean Dipole or Indian Ocean Dipole results in increased rainfall over the northwestern (northern) and southern parts of Madagascar during the wet (dry) season. The composite analysis suggests that enhanced (decreased) rainfall during the wet (dry) years of the wet and dry seasons in Madagascar is linked to a strong moisture convergence (divergence) accompanied by strong easterlies (anticyclonic circulation) over the northwestern (southern) IO. The study findings could drive further studies on other likely factors that impact the country's rainfall.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10509 - Meteorology and atmospheric sciences
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Theorectical and Applied Climatology
ISSN
0177-798X
e-ISSN
1434-4483
Volume of the periodical
148
Issue of the periodical within the volume
1-2
Country of publishing house
DE - GERMANY
Number of pages
14
Pages from-to
349-362
UT code for WoS article
000749137600001
EID of the result in the Scopus database
2-s2.0-85123841765