scholarly journals Anomalies of Central England Temperature Classified by Air Source

2009 ◽  
Vol 22 (5) ◽  
pp. 1069-1081 ◽  
Author(s):  
David E. Parker
Keyword(s):  
Atmospheric Circulation ◽  
Late Nineteenth Century ◽  
Sea Level Pressure ◽  
Mean Sea Level ◽  
Source Regions ◽  
Central England Temperature ◽  
Long Term Changes ◽  
Late Nineteenth ◽  
Circulation Changes

Abstract Daily anomalies of mean central England temperature (CET), relative to daily 1961–90 climatology, are analyzed in terms of the source of the air estimated from fields of mean sea level pressure. The average CET anomaly for a given source and calendar month during 1961–90 is taken as an estimate of the influence of atmospheric circulation for that source and calendar month, and the uncertainty in this influence is provided by the associated standard error. The atmospheric circulation influences are subtracted from the daily CET anomalies since the late nineteenth century to yield “residual anomalies,” which represent the influence of forcings other than atmospheric circulation. The use of air sources captures more circulation-related daily CET variance than the airflow indices used in previous studies. The warming in central England since the 1970s is not predominantly a result of atmospheric circulation changes, and the long-term changes of CET for air from major source regions are on the whole very similar to each other and to the overall long-term changes.

Long-Term Wind Speed Trends over Australia

2012 ◽  
Vol 25 (1) ◽  
pp. 170-183 ◽  
Author(s):  
Alberto Troccoli ◽  
Karl Muller ◽  
Peter Coppin ◽  
Robert Davy ◽  
Chris Russell ◽  
...  
Keyword(s):  
Wind Speed ◽  
Atmospheric Circulation ◽  
Sea Level Pressure ◽  
Mean Sea Level ◽  
Long Period ◽  
The Mean ◽  
Strong Winds ◽  
Circulation Changes ◽  
Linear Trends

Abstract Accurate estimates of long-term linear trends of wind speed provide a useful indicator for circulation changes in the atmosphere and are invaluable for the planning and financing of sectors such as wind energy. Here a large number of wind observations over Australia and reanalysis products are analyzed to compute such trends. After a thorough quality control of the observations, it is found that the wind speed trends for 1975–2006 and 1989–2006 over Australia are sensitive to the height of the station: they are largely negative for the 2-m data but are predominantly positive for the 10-m data. The mean relative trend at 2 m is −0.10 ± 0.03% yr−1 (−0.36 ± 0.04% yr−1) for the 1975–2006 (1989–2006) period, whereas at 10 m it is 0.90 ± 0.03% yr−1 (0.69 ± 0.04% yr−1) for the 1975–2006 (1989–2006) period. Also, at 10 m light winds tend to increase more rapidly than the mean winds, whereas strong winds increase less rapidly than the mean winds; at 2 m the trends in both light and strong winds vary in line with the mean winds. It was found that a qualitative link could be established between the observed features in the linear trends and some atmospheric circulation indicators (mean sea level pressure, wind speed at 850 hPa, and geopotential at 850 hPa), particularly for the 10-m observations. Further, the magnitude of the trend is also sensitive to the period selected, being closer to zero when a very long period, 1948–2006, is considered. As a consequence, changes in the atmospheric circulation on climatic time scales appear unlikely.

scholarly journals Atmospheric Pollution, Health, and Height in Late Nineteenth Century Britain

2018 ◽  
Vol 78 (4) ◽  
pp. 1210-1247 ◽  
Author(s):  
Roy E. Bailey ◽  
Timothy J. Hatton ◽  
Kris Inwood
Keyword(s):  
Nineteenth Century ◽  
Child Development ◽  
Atmospheric Pollution ◽  
Negative Relationship ◽  
Late Nineteenth Century ◽  
England And Wales ◽  
Strong Negative Relationship ◽  
Late Nineteenth

In nineteenth century Britain atmospheric pollution from coal-fired industrialization was on the order of 50 times higher than today. We examine the effects of these emissions on child development by analysing the heights on enlistment during WWI of men born in England and Wales in the 1890s. We find a strong negative relationship between adult heights and the coal intensity of the districts in which these men were observed as children in the 1901 census. The subsequent decline in atmospheric pollution likely contributed to the long-term improvement in health and increase in height.

Long-term changes in soil moisture conditions and their relation to atmospheric circulation in the Poyang Lake basin, China

2017 ◽  
Vol 440 ◽  
pp. 23-29 ◽  
Author(s):  
Mingjin Zhan ◽  
Yanjun Wang ◽  
Guojie Wang ◽  
Heike Hartmann ◽  
Lige Cao ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Atmospheric Circulation ◽  
Poyang Lake ◽  
Lake Basin ◽  
Poyang Lake Basin ◽  
Long Term Changes ◽  
Moisture Conditions

scholarly journals Itinerant Jewish and Arabic Trading in the Dene’s North, 1916-1930

2014 ◽  
Vol 24 (1) ◽  
pp. 163-213 ◽  
Author(s):  
George Colpitts
Keyword(s):  
Nineteenth Century ◽  
First Nations ◽  
Contact Zone ◽  
Transport Systems ◽  
Late Nineteenth Century ◽  
History Of Capitalism ◽  
Canadian North ◽  
History Of ◽  
Late Nineteenth

In late nineteenth century and especially in the interwar years, “free traders” took advantage of better transport systems to expand trade with Dene people in the Athabasca and Mackenzie Districts. Well versed in fur grading and supported by credit in the expanding industrializing fur industry in the south, “itinerant” peddlers worked independently and often controversially alongside larger capitalized fur companies such as the Hudson’s Bay Company. A large number of these newcomers were Jews. This article suggests that Jews and, to a lesser extent, Lebanese and other Arabic traders became critical in the modernization of the Canadian North. They helped create an itinerant trader-Dene “contact zone” where the mixed meaning of credit, cash, and goods transactions provided northern Aboriginal trappers the means to negotiate modernism on their own terms in the interwar years. However, by the late 1920s, the state, encouraged by larger capitalized companies, implemented policies to restrict and finally close down this contact zone. The history of itinerant trading, then, raises questions about the long-term history of capitalism and co-related economic neo-colonialism in the Canadian north and their impact on First Nations.

scholarly journals The Origins of Creationism in the Netherlands: The Evolution Debate among Twentieth-Century Dutch Neo-Calvinists

2012 ◽  
Vol 81 (1) ◽  
pp. 104-147 ◽  
Author(s):  
Abraham C. Flipse
Keyword(s):  
United States ◽  
The Netherlands ◽  
The United States ◽  
Science And Religion ◽  
Late Nineteenth Century ◽  
Founding Fathers ◽  
Modern Times ◽  
The Sixties ◽  
Late Nineteenth

The Netherlands is, besides the United States, one of the few countries where debates about creationism have been raging for decades. Strict creationism has become deeply rooted in traditional Reformed (Calvinist) circles, which is all the more remarkable as it stemmed from a very different culture and theological tradition. This essay analyses the historical implantation of this foreign element in Dutch soil by investigating the long-term interaction between American creationism and Dutch “neo-Calvinism,” a movement emerging in the late nineteenth century, which attempted to bring classical Calvinism into rapport with modern times. The heated debates about evolution in the interbellum period as well as in the sixties—periods characterized by a cultural reorientation of the Dutch Calvinists—turn out to have played a crucial role. In the interbellum period, leading Dutch theologians—fiercely challenged by Calvinist scientists—imported US “flood geology” in an attempt to stem the process of modernisation in the Calvinist subculture. In the sixties many Calvinists abandoned their resistance to evolutionary theory, but creationism continued to play a prominent role as the neo-Calvinist tradition was upheld by an orthodox minority, who (re-)embraced the reviving “Genesis Flood” creationism. The appropriation of American creationism was eased by the earlier Calvinist-creationist connection, but also by “inventing” a Calvinist-creationist tradition, suggesting continuity with the ideas of the founding fathers of neo-Calvinism. This article aims to contribute to a better understanding of what Ronald L. Numbers has recently called the “globalization” of the “science-and-religion dialogue.”

scholarly journals Long-term trends of black carbon and sulphate aerosol in the Arctic: changes in atmospheric transport and source region emissions

2010 ◽  
Vol 10 (5) ◽  
pp. 12133-12184 ◽  
Author(s):  
D. Hirdman ◽  
J. F. Burkhart ◽  
H. Sodemann ◽  
S. Eckhardt ◽  
A. Jefferson ◽  
...  
Keyword(s):  
Black Carbon ◽  
Atmospheric Circulation ◽  
Atmospheric Transport ◽  
Particle Dispersion ◽  
Downward Trend ◽  
The Arctic ◽  
Northern Eurasia ◽  
Source Regions ◽  
Long Term Trends

Abstract. As a part of the IPY project POLARCAT (Polar Study using Aircraft, Remote Sensing, Surface Measurements and Models, of Climate, Chemistry, Aerosols and Transport) and building on previous work (Hirdman et al., 2010), this paper studies the long-term trends of both atmospheric transport as well as equivalent black carbon (EBC) and sulphate for the three Arctic stations Alert, Barrow and Zeppelin. We find a general downward trend in the measured EBC concentrations at all three stations, with a decrease of −2.1±0.4 ng m−3 yr−1 (for the years 1989–2008) and −1.4±0.8 ng m−3 yr−1 (2002–2009) at Alert and Zeppelin respectively. The decrease at Barrow is, however, not statistically significant. The measured sulphate concentrations show a decreasing trend at Alert and Zeppelin of −15±3 ng m−3 yr−1 (1985–2006) and −1.3±1.2 ng m−3 yr−1 (1990–2008) respectively, while the trend at Barrow is unclear. To reveal the influence of different source regions on these trends, we used a cluster analysis of the output of the Lagrangian particle dispersion model FLEXPART run backward in time from the measurement stations. We have investigated to what extent variations in the atmospheric circulation, expressed as variations in the frequencies of the transport from four source regions with different emission rates, can explain the long-term trends in EBC and sulphate measured at these stations. We find that the long-term trend in the atmospheric circulation can only explain a minor fraction of the overall downward trend seen in the measurements of EBC (0.3–7.2%) and sulphate (0.3–5.3%) at the Arctic stations. The changes in emissions are dominant in explaining the trends. We find that the highest EBC and sulphate concentrations are associated with transport from Northern Eurasia and decreasing emissions in this region drive the downward trends. Northern Eurasia (cluster: NE, WNE and ENE) is the dominant emission source at all Arctic stations for both EBC and sulphate during most seasons. In wintertime, there are indications that the EBC emissions from the eastern parts of Northern Eurasia (ENE cluster) have increased over the last decade.

scholarly journals Reconstructing Late Holocene North Atlantic atmospheric circulation changes using functional paleoclimate networks

2017 ◽  
Vol 13 (11) ◽  
pp. 1593-1608 ◽  
Author(s):  
Jasper G. Franke ◽  
Johannes P. Werner ◽  
Reik V. Donner
Keyword(s):  
Atmospheric Circulation ◽  
North Atlantic ◽  
Late Holocene ◽  
Dominant Mode ◽  
The North ◽  
The North Atlantic ◽  
Earth’S Climate ◽  
The North Atlantic Oscillation ◽  
Circulation Changes

Abstract. Obtaining reliable reconstructions of long-term atmospheric circulation changes in the North Atlantic region presents a persistent challenge to contemporary paleoclimate research, which has been addressed by a multitude of recent studies. In order to contribute a novel methodological aspect to this active field, we apply here evolving functional network analysis, a recently developed tool for studying temporal changes of the spatial co-variability structure of the Earth's climate system, to a set of Late Holocene paleoclimate proxy records covering the last two millennia. The emerging patterns obtained by our analysis are related to long-term changes in the dominant mode of atmospheric circulation in the region, the North Atlantic Oscillation (NAO). By comparing the time-dependent inter-regional linkage structures of the obtained functional paleoclimate network representations to a recent multi-centennial NAO reconstruction, we identify co-variability between southern Greenland, Svalbard, and Fennoscandia as being indicative of a positive NAO phase, while connections from Greenland and Fennoscandia to central Europe are more pronounced during negative NAO phases. By drawing upon this correspondence, we use some key parameters of the evolving network structure to obtain a qualitative reconstruction of the NAO long-term variability over the entire Common Era (last 2000 years) using a linear regression model trained upon the existing shorter reconstruction.

The History of Golf in Mexico

2019 ◽  
pp. 18-42
Author(s):  
Hugo Cerón-Anaya
Keyword(s):  
Nineteenth Century ◽  
Early Development ◽  
Late Nineteenth Century ◽  
Golf Clubs ◽  
History Of ◽  
Neoliberal Policies ◽  
Late Nineteenth ◽  
Anglo American

Chapter 1 analyzes the history of golf in Mexico, showing a long-term pattern of class and racialized dynamics associated to the sport. The first part describes how wealthy Anglo-American immigrants brought golf to late nineteenth-century Mexico. This section explains how the early development of golf was connected to the spread of modernity, capitalism, and Anglo-American racialized ideas, dynamics that informed the creation of a class- and race-based privileged space. The second part of the chapter chronicles the transformation that golf experienced after the 1940s when a growing number of affluent Mexicans joined this sport. The change, however, did not eradicate some of the early restrictive dynamics. The chapter ends by showing how the neoliberal policies introduced by the late 1980s significantly expanded the number of golf clubs existing in the country. Despite the considerable expansion, golf is still the preserve of the upper middle and upper classes in today’s Mexico.

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