+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Palaeoclimatological and palaeolimnological records from fossil midges and tree-rings; the role of the North Atlantic Oscillation in eastern Finland through the Medieval Climate Anomaly and Little; Ice Age

, : Palaeoclimatological and palaeolimnological records from fossil midges and tree-rings; the role of the North Atlantic Oscillation in eastern Finland through the Medieval Climate Anomaly and Little; Ice Age. Quaternary Science Reviews 29.17-18

Hydrological changes and air temperature variability are reconstructed from the sediments of Lake Pieni-Kauro, eastern Finland during the Medieval Climate Anomaly (MCA) and Little Ice Age (LIA) using transfer functions derived from midge (Insecta: Nematocera)-based calibration models. The reconstructions are compared with a regional tree-ring chronology and sediment physical properties are determined to track depositional changes. An objective of the study is to examine the long-term relationship between the North Atlantic Oscillation (NAO) and climate (temperature, precipitation). Our results show that the MCA was characterized by warm and dry summer conditions, which were accompanied by changes in the sediment magnetic susceptibility values most likely representing major forest fires during the tree-ring indicated MCA megadrought. However, the midge-based stream flow reconstruction shows increased values during the MCA, thus implying enhanced spring floods after snowy winters. During the LIA, the tree-ring data indicate that a generally wetter climate prevailed during summers, but the stream flow reconstruction indicates less snowy winters. In the terms of long-term climatology, the present results show support to the concept that the NAO has a positive correlation between winter precipitation and annual temperature and a negative correlation between summer precipitation in eastern Finland. Thus, the results may serve as important background data for global change assessments.


DOI: 10.1016/j.quascirev.2010.06.015

Other references

Popielski, B., 1950: Medico-legal aspects of gun-shot wounds during the war and post-war periods. Polski Tygodnik Lekarski 5(11): 410-414

Winn, Jh, 1977: Futures markets and management decisions. Cattle guard: 22 (7) 14-15

Asmarats, L.; Puri, R.; Rodés-Cabau, J., 2017: Transcatheter treatment of functional tricuspid regurgitation: preliminary experiences. Tricuspid regurgitation (TR) is a common finding in patients with left-sided valvular or myocardial disease. However, many patients with severe symptomatic TR are deemed inoperable or at high surgical risk, often due to comorbidities and the need...

Ruiz, M.; Navarro, J.F.; Rodríguez, J.C.; Larrosa, J.A.; Royo, G., 2004: Effect of clinical and socio-economic factors on the rate of clustering of Mycobacterium tuberculosis clinical isolates in Elche (Spain). We studied the association that exists between the epidemiological type clustering of isolates of Mycobacterium tuberculosis and certain clinical, epidemiological and socio-economic characteristics of tuberculosis patients in the Elche health dist...

Ave Lallemant Hans G.; Oldow John, 2000: Active displacement partitioning and arc-parallel extension of the Aleutian volcanic arc based on Global Positioning System geodesy and kinematic analysis. Global Positioning System geodesy and structural analysis of parts of the Aleutian island chain support the interpretation of forearc migration westward along right-lateral transcurrent faults. Measured displacements are essentially arc parallel i...

Schulz, E., 1953: Therapy of tuberculous allergy with tuberculin. Medizinische Monatsschrift 7(1): 32-33

Djordjevic, M.; Kocovic, D.; Pavlovic, S.; Velimirovic, D.; Kostic, D., 1989: Circadian variations of heart rate and STIM-T interval: adaptation for nighttime pacing. In order to determine the optimal pacing rate for pacemaker patients at night, 150 normal subjects with regular sinus rhythm and free of manifest heart disease, were studied using 24-hour Holter monitoring. Minimum and average heart rates were ana...

Thomas, S., 2017: Mental Health Issues and People who Identify as LGBTQ Special issue of Issues in Mental Health Nursing on the topic of. Issues in Mental Health Nursing 38(8): 609-609

Wilhelmsen, L.; Welin, L.; Odén, A.; Björnberg, A., 2010: Saving lives, money and resources: drug and CABG/PCI use after myocardial infarction in a Swedish record-linkage study. Drug costs are increasing despite the introduction of cheaper generic drugs. The aim of the present study was to analyse the entire costs of hospital care, out-patient care, and the cost of drugs for 16 months following a myocardial infarction (MI...

Artiss, J.D.; Brogan, K.; Brucal, M.; Moghaddam, M.; Jen, K-L.Catherine., 2006: The effects of a new soluble dietary fiber on weight gain and selected blood parameters in rats. This study was designed to investigate a new dietary fiber, alpha -cyclodextrin, marketed under the trade name FBCx (Wacker Biochem, Adrian, MI), for beneficial effects on weight reduction and the improvement of certain blood parameters in rats. M...