Precipitation and synoptic weather types on hazardous weather days in the Southeastern US

2021 ◽  
Author(s):  
Daniel Burow ◽  
Kelsey Ellis
Keyword(s):  
Weather Types ◽  
Synoptic Weather ◽  
Southeastern Us ◽  
Hazardous Weather

scholarly journals Short-Term Associations of Fine Particulate Matter and Synoptic Weather Types with Cardiovascular Mortality: An Ecological Time-Series Study in Shanghai, China

2020 ◽  
Vol 17 (3) ◽  
pp. 1111 ◽  
Author(s):  
Qing Tian ◽  
Mei Li ◽  
Scott Montgomery ◽  
Bo Fang ◽  
Chunfang Wang ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Cardiovascular Mortality ◽  
Fine Particulate Matter ◽  
Weather Conditions ◽  
Cold Weather ◽  
Short Term ◽  
Weather Types ◽  
Synoptic Weather ◽  
Fine Particulate ◽  
Pm2.5 Concentration

Background: Exposures to both ambient fine particulate matter (PM2.5) and extreme weather conditions have been associated with cardiovascular disease (CVD) deaths in numerous epidemiologic studies. However, evidence on the associations with CVD deaths for interaction effects between PM2.5 and weather conditions is still limited. This study aimed to investigate associations of exposures to PM2.5 and weather conditions with cardiovascular mortality, and further to investigate the synergistic or antagonistic effects of ambient air pollutants and synoptic weather types (SWTs). Methods: Information on daily CVD deaths, air pollution, and meteorological conditions between 1 January 2012 and 31 December 2014 was obtained in Shanghai, China. Generalized additive models were used to assess the associations of daily PM2.5 concentrations and meteorological factors with CVD deaths. A 15-day lag analysis was conducted using a polynomial distributed lag model to access the lag patterns for associations with PM2.5. Results: During the study period, the total number of CVD deaths in Shanghai was 59,486, with a daily mean of 54.3 deaths. The average daily PM2.5 concentration was 55.0 µg/m3. Each 10 µg/m3 increase in PM2.5 concentration was associated with a 1.26% (95% confidence interval (CI): 0.40%, 2.12%) increase in CVD mortality. No SWT was statistically significantly associated with CVD deaths. For the interaction between PM2.5 and SWT, statistically significant interactions were found between PM2.5 and cold weather, with risk for PM2.5 in cold dry SWT decreasing by 1.47% (95% CI: 0.54%, 2.39%), and in cold humid SWT the risk decreased by 1.45% (95% CI: 0.52%, 2.36%). In the lag effect analysis, statistically significant positive associations were found for PM2.5 in the 1–3 lag days, while no statistically significant effects were found for other lag day periods. Conclusions: Exposure to PM2.5 was associated with short-term increased risk of cardiovascular deaths with some lag effects, while the cold weather may have an antagonistic effect with PM2.5. However, the ecological study design limited the possibility to identify a causal relationship, so prospective studies with individual level data are warranted.

Kawasaki disease in Spanish paediatric population and synoptic weather types: an observational study

2018 ◽  
Vol 38 (7) ◽  
pp. 1259-1266 ◽  
Author(s):  
Leyre Riancho-Zarrabeitia ◽  
Domingo F. Rasilla ◽  
Dominic Royé ◽  
Pablo Fdez-Arroyabe ◽  
Ana Santurtún
Keyword(s):  
Kawasaki Disease ◽  
Observational Study ◽  
Paediatric Population ◽  
Weather Types ◽  
Synoptic Weather

The Relation Between Cloudiness over the Greenland Icecap and Synoptic Weather Types 1 2

1960 ◽  
Vol 41 (2) ◽  
pp. 68-78
Author(s):  
Clarence A. Carpenter
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Grid Point ◽  
Summer Season ◽  
Weather Data ◽  
Weather Types ◽  
Synoptic Weather ◽  
System Type

This paper is a summary of cloudiness over the Greenland icecap route from Sondrestrom Air Base, approximately 67N–51W, to Angmagssalik, approximately 65.5N–37.5W. Four types of synoptic systems were chosen and cloudiness summarized by types both annually and for the summer season. Total cloudiness annually and for the summer season without regard to synoptic types is also presented. Data for this paper consisted of 511 flight cross sections made by Scandinavian Airlines System flight crews in scheduled air service over the icecap route. It is presented in the form of a cross-section grid with isopleths showing the percentage of time cloudiness was observed at each grid point. These cross sections are of particular value in that they are the first source of systematic, observed weather data over this area. An attempt is made to explain icecap cloud distribution by correlation with system type in order to provide a practical forecasting aid for the Greenland air-route forecasters.

scholarly journals Soya bean yield variability in the Argentine Pampas in relation to synoptic weather types: monitoring implications

2009 ◽  
Vol 16 (4) ◽  
pp. 501-511 ◽  
Author(s):  
M. Laura Bettolli ◽  
Walter M. Vargas ◽  
Olga C. Penalba
Keyword(s):  
Soya Bean ◽  
Yield Variability ◽  
Weather Types ◽  
Synoptic Weather ◽  
Bean Yield ◽  
Argentine Pampas

scholarly journals Planetary boundary influence at the Jungfraujoch analyzed by aerosol cycles and synoptic weather types

2011 ◽  
Vol 11 (1) ◽  
pp. 985-1024 ◽  
Author(s):  
M. Collaud Coen ◽  
E. Weingartner ◽  
M. Furger ◽  
S. Nyeki ◽  
A. S. H. Prévôt ◽  
...  
Keyword(s):  
Relative Increase ◽  
Weather Type ◽  
Specific Humidity ◽  
Weather Types ◽  
Annual Cycles ◽  
Air Masses ◽  
Scattering Coefficients ◽  
Diurnal Cycles ◽  
Synoptic Weather ◽  
Time Of Year

Abstract. Fourteen years of meteorological parameters, aerosol variables (absorption and scattering coefficients, aerosol number concentration) and trace gases (CO, NOx, SO2) measured at the Jungfraujoch (JFJ, 3580 m a.s.l.) have been analyzed as a function of different synoptic weather types. The Alpine Weather Statistics (AWS) classification was used to define the synoptic meteorology over the whole Swiss region. The seasonal contribution of each synoptic weather type to the aerosol concentration was deduced from the aerosol annual cycles while the planetary boundary layer (PBL) influence was estimated by means of the diurnal cycles. Since aerosols are scavenged by precipitation, the diurnal cycle of the CO concentration was also used to identify polluted air masses. SO2 and NOx concentrations were used as precursor tracers for new particle formation and growth. This study confirms the consensus view that the JFJ is mainly influenced by the free troposphere during winter and by injection of air parcels from the PBL during summer. A more detailed picture is, however, drawn where the JFJ is completely influenced by free tropospheric air masses in winter during advective weather types and largely influenced by the PBL also during the night in summer during the subsidence weather type. Between these two extreme situations, the PBL influence at the JFJ depends on both the time of year and the synoptic weather type. The fraction of PBL air transported to the JFJ was estimated by the relative increase of the specific humidity and CO.

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