Interannual Variability of the GNSS Precipitable Water Vapor in the Global Tropics - Publikacja - MOST Wiedzy

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Interannual Variability of the GNSS Precipitable Water Vapor in the Global Tropics

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This paper addresses the subject of inter-annual variability of the tropical precipitable water vapor (PWV) derived from 18 years of global navigation satellite system (GNSS) observations. Non-linear trends of retrieved GNSS PWV were investigated using the singular spectrum analysis (SSA) along with various climate indices. For most of the analyzed stations (~49%) the GNSS PWV anomaly was related to the El Niño Southern Oscillation (ENSO), although its influence on the PWV variability was not homogeneous. The cross-correlations coefficient values estimated between the Multivariate ENSO Index (MEI) and PWV were up to 0.78. A strong cross-correlation was also found for regional climate pattern expressed through CAR, DMI, HAW, NPGO, TNA and TSA indices. A distinct agreement was also found when instead of climate indices, the local sea surface temperature was examined (average correlation 0.60). The SSA method made it also possible to distinguish small-scale phenomena that affect PWV, such as local droughts or wetter rainy seasons. The overall nature of the investigated changes was also verified through linear trend analysis. In general, not a single station was characterized by a negative trend and its weighted mean value, calculated for all stations was equal to 0.08 ± 0.01 mm/year.

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Kategoria:
Publikacja w czasopiśmie
Typ:
artykuły w czasopismach
Opublikowano w:
Atmosphere nr 12,
ISSN: 2073-4433
Język:
angielski
Rok wydania:
2021
Opis bibliograficzny:
Baldysz Z., Nykiel G., Latos B., Baranowski D., Figurski M.: Interannual Variability of the GNSS Precipitable Water Vapor in the Global Tropics// Atmosphere -Vol. 12,iss. 12 (2021), s.1698-
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.3390/atmos12121698
Weryfikacja:
Politechnika Gdańska

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