scholarly journals Assessing the Impact of Locally Produced Aerosol on the Rainwater Composition at the Gosan Background Site in East Asia

2014 ◽  
Vol 8 (2) ◽  
pp. 69-80 ◽  
Author(s):  
Yeongcheol Han ◽  
Youngsook Huh
Keyword(s):  
East Asia ◽  
Background Site ◽  
Rainwater Composition ◽  
The Impact

scholarly journals PM10 concentration levels at an urban and background site in Cyprus: The impact of urban sources and dust storms

2014 ◽  
Vol 64 (12) ◽  
pp. 1352-1360 ◽  
Author(s):  
Souzana Achilleos ◽  
John S. Evans ◽  
Panayiotis K. Yiallouros ◽  
Savvas Kleanthous ◽  
Joel Schwartz ◽  
...  
Keyword(s):  
Dust Storms ◽  
Pm10 Concentration ◽  
Background Site ◽  
The Impact ◽  
Concentration Levels

Reply to T.M. Simbirtseva and S.V. Volkov: Facts Against Fantasies

2021 ◽  
pp. 127
Author(s):  
Bella Pak
Keyword(s):  
East Asia ◽  
Scientific Research ◽  
Russian Government ◽  
New Information ◽  
History Of ◽  
The Impact ◽  
Specific Contribution

This article provides an analysis of scientific research on the life and activities of the first Russian charge d’ affaires and consul general in Korea Karl I. Waeber, shows the specific contribution of scholars to the study of the professional biography of this outstanding diplomat. Despite the fact that the activity of K.I. Weber in Korea is partially reflected in the works of Boris D. Pak and Bella B. Pak on the history of Russo-Korean relations, as well as in several separate articles, the first special monographic work on this topic belongs to the pen of the author of this article. The monographic research focuses on a detailed coverage of the tasks, goals facing Waeber in Korea, the specific forms and conditions for their implementation, the impact he exerts on the course of the Russian government towards Korea; analysis of the most complex international circumstances, against the background of which he made certain decisions.   This article contains answers to T.M. Simbirtseva and S.V. Volkov’s critical remarks regarding some of the information and photographic documents given in the work concerning K.I. Waeber and the accusations against the author of the article in connection with the publication in Germany in the summer of 2021 of Dr. S. Braezel's photobook "Pictures of the life of a diplomat between Europe and East Asia: Karl von Waeber (1841-1910)". The author of the article drew attention to some erroneous judgments in the article by T.M. Simbirtseva and S.V. Volkov, formed due to ignorance and bias, analyzed and refuted the most unfounded accusations, clarified the position regarding new information about K.I. Waeber.

scholarly journals Impacts of Late-Spring North Eurasian Soil Moisture Variation on Summer Rainfall Anomalies in Northern East Asia

2021 ◽  
Author(s):  
Yinghan Sang ◽  
Hong-Li Ren ◽  
Yi Deng ◽  
Xiaofeng Xu ◽  
Xueli Shi ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Temperature Gradient ◽  
East Asia ◽  
Summer Rainfall ◽  
Low Pressure ◽  
Late Spring ◽  
Boreal Summer ◽  
Pressure Center ◽  
North Eurasia ◽  
The Impact

Abstract This paper reports findings from a diagnostic and modeling analysis that investigates the impact of the late-spring soil moisture anomaly over North Eurasia on the boreal summer rainfall over northern East Asia (NEA). Soil moisture in May in the region from the Kara-Laptev Sea coasts to Central Siberian Plateau is found to be negatively correlated with the summer rainfall from Mongolia to Northeast China. The atmospheric circulation anomalies associated with the anomalously dry soil are characterized by a pressure dipole with the high-pressure center located over North Eurasia and the low-pressure center over NEA, where an anomalous lower-level moisture convergence occurs, favoring rainfall formation. Diagnoses and Modeling experiments demonstrate that the effect of the spring low soil moisture over North Eurasia may persist into the following summer through modulating local surface latent and sensible heat fluxes, increasing low-level air temperature at higher latitudes, and effectively reducing the meridional temperature gradient. The weakened temperature gradient could induce the decreased zonal wind and the generation of a low-pressure center over NEA, associated with a favorable condition of local synoptic activity. The above relationships and mechanisms are vice versa for the prior wetter soil and decreased NEA rainfall. These findings suggest that soil moisture anomalies over North Eurasia may act as a new precursor providing an additional predictability source for better predicting the summer rainfall in NEA.

scholarly journals Ozone impacts of gas–aerosol uptake in global chemistry transport models

2018 ◽  
Vol 18 (5) ◽  
pp. 3147-3171 ◽  
Author(s):  
Scarlet Stadtler ◽  
David Simpson ◽  
Sabine Schröder ◽  
Domenico Taraborrelli ◽  
Andreas Bott ◽  
...  
Keyword(s):  
East Asia ◽  
Surface Area ◽  
General Circulation ◽  
Heterogeneous Reaction ◽  
Circulation Model ◽  
Photochemical Reactions ◽  
Heterogeneous Reactions ◽  
Transport Models ◽  
Global Pattern ◽  
The Impact

Abstract. The impact of six heterogeneous gas–aerosol uptake reactions on tropospheric ozone and nitrogen species was studied using two chemical transport models, the Meteorological Synthesizing Centre-West of the European Monitoring and Evaluation Programme (EMEP MSC-W) and the European Centre Hamburg general circulation model combined with versions of the Hamburg Aerosol Model and Model for Ozone and Related chemical Tracers (ECHAM-HAMMOZ). Species undergoing heterogeneous reactions in both models include N2O5, NO3, NO2, O3, HNO3, and HO2. Since heterogeneous reactions take place at the aerosol surface area, the modelled surface area density (Sa) of both models was compared to a satellite product retrieving the surface area. This comparison shows a good agreement in global pattern and especially the capability of both models to capture the extreme aerosol loadings in east Asia. The impact of the heterogeneous reactions was evaluated by the simulation of a reference run containing all heterogeneous reactions and several sensitivity runs. One reaction was turned off in each sensitivity run to compare it with the reference run. The analysis of the sensitivity runs confirms that the globally most important heterogeneous reaction is the one of N2O5. Nevertheless, NO2, HNO3, and HO2 heterogeneous reactions gain relevance particularly in east Asia due to the presence of high NOx concentrations and high Sa in the same region. The heterogeneous reaction of O3 itself on dust is of minor relevance compared to the other heterogeneous reactions. The impacts of the N2O5 reactions show strong seasonal variations, with the biggest impacts on O3 in springtime when photochemical reactions are active and N2O5 levels still high. Evaluation of the models with northern hemispheric ozone surface observations yields a better agreement of the models with observations in terms of concentration levels, variability, and temporal correlations at most sites when the heterogeneous reactions are incorporated. Our results are loosely consistent with results from earlier studies, although the magnitude of changes induced by N2O5 reaction is at the low end of estimates, which seems to fit a trend, whereby the more recent the study the lower the impacts of these reactions.

scholarly journals Long-range Transport Impacts on Surface Aerosol Concentrations and the Contributions to Haze Events in China: an HTAP2 Multi-Model Study

2018 ◽  
Author(s):  
Xinyi Dong ◽  
Joshua S. Fu ◽  
Qingzhao Zhu ◽  
Jian Sun ◽  
Jiani Tan ◽  
...  
Keyword(s):  
East Asia ◽  
Long Range ◽  
Source Region ◽  
Long Range Transport ◽  
Special Focus ◽  
Anthropogenic Emission ◽  
Multiple Model ◽  
Aerosol Mass Concentration ◽  
Range Transport ◽  
The Impact

Abstract. Haze has been severely affecting the densely populated areas in China during recent years. While many of the pilot studies have been devoted to investigate the contributions from local anthropogenic emission, limited attention has been paid to the influence from long-range transport. In this study, we use simulations from 6 participating models supplied through the Task Force on Hemispheric Transport of Air Pollution Phase 2 (HTAP2) exercise to investigate the long-range transport impact of Europe and Russia/Belarussia/Ukraine on the surface air quality in East Asia, with special focus on their contributions during the haze episodes over China. The impact of 20 % anthropogenic emission perturbation from the source region is extrapolated by a factor of 5 to estimate the full impact. We find that the full impacts from EUR and RBU are 0.99 µg/m3 (3.1 %) and 1.32 µg/m3 (4.1 %) respectively during haze episodes, while the annual averaged full impacts are only 0.35 µg m3 (1.7 %) and 0.53 µg/m3 (2.6 %) respectively. By estimating the aerosol response within and above the planetary boundary layer (PBL), we find that long-range transport within the PBL contributes to 22–38 % of the total column density of aerosol response. Comparison with the HTAP Phase 1 (HTAP1) assessment reveals that from 2000 to 2010, the long-range transport from Europe to East Asia has decreased significantly by a factor of 2–10 for surface aerosol mass concentration due to the simultaneous emission reduction in source region and emission increase in the receptor region. By investigating the visibility response, we find that the long-range transport from the Europe and RBU region increases the number of haze events in China by 0.15 % and 0.11 % respectively, and the North China Plain and southeast China receives 1–3 extra haze days. This study is the first investigation into the contribution of long-range transport to haze in China with multiple model experiments.

Liberalization at Any Cost? Implications of IMF Policy for Sovereignty and Stability in East Asia

2000 ◽  
Vol 15 (1) ◽  
pp. 43-56
Author(s):  
Michael Spaulding
Keyword(s):  
East Asia ◽  
International Political Economy ◽  
Free Market ◽  
East Asian ◽  
Financial Governance ◽  
State Governance ◽  
The Stability ◽  
Cost Implications ◽  
The Cost ◽  
The Impact

Globalization pits pressures for liberalization against state claims to political and economic sovereignty. Less powerful states in particular face strong pressure from the international trade regime to liberalize their economies irrespective of the impact on domestic stability and national goals. East Asia has been a hold-out against the global trend toward liberalization. This paper shows that the bail-out package demanded by the IMF in 1997 during the East Asian financial crisis imposed unprecedented restrictions on state governance without regard for long-term implications. The paper argues that the IMF's motivation was to harmonize financial governance of the affected economies with Western practices. However, the cost of this initiative to the stability of the region has been overlooked. The East Asian region has carved out for itself a unique niche in the international political economy by resisting penetration of Western finance capital. Already governments have fallen and deep resentments have been sewn over the reversal. More seriously for the future, assumptions that free-market liberalism can be imposed top-down ignore the extent to which economic institutions and preferences are embedded in culture.

Mr. X and the Pacific

2018 ◽  
Author(s):  
Paul J. Heer
Keyword(s):  
Soviet Union ◽  
East Asia ◽  
Vietnam War ◽  
Korean War ◽  
The United States ◽  
The Soviet Union ◽  
The Pacific ◽  
The Us ◽  
The Korean War ◽  
The Impact

This book chronicles and assesses the little-known involvement of US diplomat George F. Kennan—renowned as an expert on the Soviet Union—in US policy toward East Asia, primarily in the early Cold War years. Kennan, with vital assistance from his deputy John Paton Davies, played pivotal roles in effecting the US withdrawal from the Chinese civil war and the redirection of American occupation policy in Japan, and in developing the “defensive perimeter” concept in the western Pacific. His influence, however, faded soon thereafter: he was less successful in warning against US security commitments in Korea and Indochina, and the impact of the Korean War ultimately eclipsed his strategic vision for US policy in East Asia. This was due in large part to Kennan’s inability to reconcile his judgment that the mainland of East Asia was strategically expendable to the United States with his belief that US prestige should not be compromised there. The book examines the subsequent evolution of Kennan’s thinking about East Asian issues—including his role as a prominent critic of US involvement in the Vietnam War—and the legacies of his engagement with the region.

Irrigation in JULES Land-Only Simulations over South and East Asia

2021 ◽  
Author(s):  
Markus Todt ◽  
Pier Luigi Vidale ◽  
Patrick C. McGuire ◽  
Omar V. Müller
Keyword(s):  
Soil Moisture ◽  
East Asia ◽  
Land Surface ◽  
River Flow ◽  
Heat Fluxes ◽  
Global Climate Models ◽  
Irrigated Agriculture ◽  
Irrigation Season ◽  
Irrigation Scheme ◽  
The Impact

<p>Capturing soil moisture-atmosphere feedbacks in a weather or climate model requires realistic simulation of various land surface processes. However, irrigation and other water management methods are still missing in most global climate models today, despite irrigated agriculture being the dominant land use in parts of Asia. In this study, we test the irrigation scheme available in the land model JULES (Joint UK Land Environment Simulator) by running land-only simulations over South and East Asia driven by WFDEI (WATCH Forcing Data ERA-Interim) forcing data. Irrigation in JULES is applied on a daily basis by replenishing soil moisture in the upper soil layers to field capacity, and we use a version of the irrigation scheme that extracts water for irrigation from groundwater and rivers, which physically limits the amount of irrigation that can be applied. We prescribe irrigation for C3 grasses in order to simulate the effects of agriculture, albeit retaining the simpler, widely used 5-PFT (plant functional type) configuration in JULES. Irrigation generally increases soil moisture and evapotranspiration, which results in increasing latent heat fluxes and decreasing sensible heat fluxes. Comparison with combined observational/machine-learning products for turbulent fluxes shows that while irrigation can reduce biases, other biases in JULES, unrelated to irrigation, are larger than improvements due to the inclusion of irrigation. Irrigation also affects water fluxes within the soil, e.g. runoff and drainage into the groundwater level, as well as soil moisture outside of the irrigation season. We find that the irrigation scheme, at least in the uncoupled land-atmosphere setting, can rapidly deplete groundwater to the point that river flow becomes the main source of irrigation (over the North China Plain and the Indus region) and can have the counterintuitive effect of decreasing annual average soil moisture (over the Ganges plain). Subsequently, we will explore the impact of irrigation on regional climate by conducting coupled land-atmosphere simulations.</p>

The Use of Models to Assess the Impact of Land Use Change on Ecological Processes: Case-Studies of Deforestation in South-East Asia

2004 ◽  
pp. 475-494
Author(s):  
Peter H. Verburg ◽  
A. Veldkamp ◽  
W. Engelsman ◽  
R. Zalinge ◽  
M. E. F. Mensvoort ◽  
...  
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
East Asia ◽  
Case Studies ◽  
South East Asia ◽  
Ecological Processes ◽  
The Impact ◽  
Use Of Models

The Impact of European and Chinese Soft Power on Regional and Global Governance

2007 ◽  
Author(s):  
SEBASTIAN BERSICK
Keyword(s):  
East Asia ◽  
Global Governance ◽  
Soft Power ◽  
Regional Security ◽  
The Us ◽  
The Usa ◽  
The Impact

This chapter returns to issues raised by other authors in this section: the contrast between European, Chinese, and US perceptions of hard and soft power in the contexts of regional and global governance. Taking the ASEM process as a case, it shows how Europeans and Asians have approached the interaction from different institutional perspectives. Despite this, it sees ASEM as a process that reflects, and promotes, the advance of regional institutionalism in East Asia, adding an important dimension to the Europe–China relationship. This is then contrasted with the US strategy of dual divergence: a divergent internal strategy that rejects institutionalism for managing regional security; and an external divergent strategy that rejects the building of shared and reciprocal institutions between the USA and Asia. The chapter concludes that Europe's ‘balancing by convergence’ strategy has advantages over the USA's ‘balancing by divergence’ strategy.

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