Next Article in Journal
Validation of CloudSat-CPR Derived Precipitation Occurrence and Phase Estimates across Canada
Previous Article in Journal
Which Meteorological and Climatological Information Is Requested for Better Surfing Experiences? A Survey-Based Analysis
Article

A Synoptic Scale Perspective on Greenland Ice Core δ18O Variability and Related Teleconnection Patterns

1
Helmholtz Center for Polar and Marine Research, Paleoclimate Dynamics Group, Alfred Wegener Institute, 27570 Bremerhaven, Germany
2
Department of Environmental Physics & MARUM, University of Bremen, 28359 Bremen, Germany
*
Author to whom correspondence should be addressed.
Atmosphere 2021, 12(3), 294; https://doi.org/10.3390/atmos12030294
Received: 19 December 2020 / Revised: 17 February 2021 / Accepted: 19 February 2021 / Published: 25 February 2021
(This article belongs to the Section Climatology)
The variability of stable oxygen isotope ratios (δ18O) from Greenland ice cores is commonly linked to changes in local climate and associated teleconnection patterns. In this respect, in this study we investigate ice core δ18O variability from a synoptic scale perspective to assess the potential of such records as proxies for extreme climate variability and associated weather patterns. We show that positive (negative) δ18O anomalies in three southern and central Greenland ice cores are associated with relatively high (low) Rossby Wave Breaking (RWB) activity in the North Atlantic region. Both cyclonic and anticyclonic RWB patterns associated with high δ18O show filaments of strong moisture transport from the Atlantic Ocean towards Greenland. During such events, warm and wet conditions are recorded over southern, western and central part of Greenland. In the same time the cyclonic and anticyclonic RWB patterns show enhanced southward advection of cold polar air masses on their eastern side, leading to extreme cold conditions over Europe. The association between high δ18O winters in Greenland ice cores and extremely cold winters over Europe is partly explained by the modulation of the RWB frequency by the tropical Atlantic sea surface temperature forcing, as shown in recent modeling studies. We argue that δ18O from Greenland ice cores can be used as a proxy for RWB activity in the Atlantic European region and associated extreme weather and climate anomalies. View Full-Text
Keywords: Greenland ice cores; atmospheric rivers; Rossby wave breaking Greenland ice cores; atmospheric rivers; Rossby wave breaking
Show Figures

Figure 1

MDPI and ACS Style

Rimbu, N.; Ionita, M.; Lohmann, G. A Synoptic Scale Perspective on Greenland Ice Core δ18O Variability and Related Teleconnection Patterns. Atmosphere 2021, 12, 294. https://doi.org/10.3390/atmos12030294

AMA Style

Rimbu N, Ionita M, Lohmann G. A Synoptic Scale Perspective on Greenland Ice Core δ18O Variability and Related Teleconnection Patterns. Atmosphere. 2021; 12(3):294. https://doi.org/10.3390/atmos12030294

Chicago/Turabian Style

Rimbu, Norel; Ionita, Monica; Lohmann, Gerrit. 2021. "A Synoptic Scale Perspective on Greenland Ice Core δ18O Variability and Related Teleconnection Patterns" Atmosphere 12, no. 3: 294. https://doi.org/10.3390/atmos12030294

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop