Interdecadal variations of East Asia monsoon and its relation with precipitation over North China

2003 ◽  
Author(s):  
Zhaobo Sun ◽  
Chun Li ◽  
Haishan Chen
Keyword(s):  
East Asia ◽  
North China ◽  
East Asia Monsoon

Estimating winter wheat planting area in north China driven by the East Asia monsoon

2018 ◽  
Vol 12 (02) ◽  
pp. 1
Author(s):  
Yazhen Jiang ◽  
Xiaoguang Jiang ◽  
Songcai You ◽  
Chen Ru
Keyword(s):  
Winter Wheat ◽  
East Asia ◽  
North China ◽  
East Asia Monsoon

scholarly journals Springtime daily variations in lower-tropospheric ozone over east Asia: the role of cyclonic activity and pollution as observed from space with IASI

2015 ◽  
Vol 15 (18) ◽  
pp. 10839-10856 ◽  
Author(s):  
G. Dufour ◽  
M. Eremenko ◽  
J. Cuesta ◽  
C. Doche ◽  
G. Foret ◽  
...  
Keyword(s):  
Carbon Monoxide ◽  
East Asia ◽  
Tropospheric Ozone ◽  
North China Plain ◽  
North China ◽  
Low Pressure ◽  
The North ◽  
The North China Plain ◽  
Co Observations ◽  
Low Pressure Systems

Abstract. We use satellite observations from IASI (Infrared Atmospheric Sounding Interferometer) on board the MetOp-A satellite to evaluate the springtime daily variations in lower-tropospheric ozone over east Asia. The availability of semi-independent columns of ozone from the surface up to 12 km simultaneously with CO columns provides a powerful observational data set to diagnose the processes controlling tropospheric ozone enhancement on synoptic scales. By combining IASI observations with meteorological reanalyses from ERA-Interim, we develop an analysis method based only on IASI ozone and CO observations to identify the respective roles of the stratospheric source and the photochemical source in ozone distribution and variations over east Asia. The succession of low- and high-pressure systems drives the day-to-day variations in lower-tropospheric ozone. A case study analysis of one frontal system and one cut-off low system in May 2008 shows that reversible subsiding and ascending ozone transfers in the upper-troposphere–lower-stratosphere (UTLS) region, due to the tropopause perturbations occurring in the vicinity of low-pressure systems, impact free and lower-tropospheric ozone over large regions, especially north of 40° N, and largely explain the ozone enhancement observed with IASI for these latitudes. Irreversible stratosphere–troposphere exchanges of ozone-rich air masses occur more locally in the southern and southeastern flanks of the trough. The contribution to the lower-tropospheric ozone column is difficult to dissociate from the tropopause perturbations generated by weather systems. For regions south of 40° N, a significant correlation has been found between lower-tropospheric ozone and carbon monoxide (CO) observations from IASI, especially over the North China Plain (NCP). Considering carbon monoxide observations as a pollutant tracer, the O3–CO correlation indicates that the photochemical production of ozone from primary pollutants emitted over such large polluted regions significantly contributes to the ozone enhancements observed in the lower troposphere via IASI. When low-pressure systems circulate over the NCP, stratospheric and pollution sources play a concomitant role in the ozone enhancement. IASI's 3-D observational capability allows the areas in which each source dominates to be determined. Moreover, the studied cut-off low system has enough potential convective capacity to uplift pollutants (ozone and CO) and to transport them to Japan. The increase in the enhancement ratio of ozone to CO from 0.16 on 12 May over the North China Plain to 0.28 over the Sea of Japan on 14 May indicates photochemical processing during the plume transport.

Wars and Rumours of War, 1918-1945: Japan, the West and Asia Pacific

2017 ◽  
Author(s):  
Roger Buckley
Keyword(s):  
East Asia ◽  
General Public ◽  
British Literature ◽  
North China ◽  
Contextual Analysis ◽  
Asia Pacific ◽  
The West

Supported by an in-depth Introduction and contextual analysis, this six-volume set complements Series I (1918-1937 – From Armistice to North China), addressing the history between 1938 and1945. Despite the widespread operation of war-time censorship and surveillance, publishers in the West and, to a lesser degree in East Asia, put out a range of material that remains of considerable value to later generations. Some of the texts selected are undeniably partisan but the quantity of the published material (and to some extent its quality) left the general public with a vast and varied archive of printed matter that deserves to be consulted and debated by today's researchers and students. Greater attention is given to American and British literature rather than Chinese or Japanese simply by virtue of the practical realities.

scholarly journals Major Patterns in the Neolithic Chronology of East Asia: Issues of the Origin of Pottery, Agriculture, and Civilization

Radiocarbon ◽  
2009 ◽  
Vol 51 (3) ◽  
pp. 891-903 ◽  
Author(s):  
Yaroslav V Kuzmin ◽  
J A Timothy Jull ◽  
G S Burr
Keyword(s):  
East Asia ◽  
Food Production ◽  
North China ◽  
State Level ◽  
Written Language ◽  
Far Eastern Russia ◽  
Neolithic Agriculture ◽  
Terminal Pleistocene ◽  
Far Eastern ◽  
Different Parts

General chronological frameworks created recently for the Neolithic complexes of China, Japan, Korea, and far eastern Russia allow us to reveal temporal patterns of Neolithization, origin of food production, and the emergence of civilizations. Pottery originated in East Asia, most probably independently in different parts of it, in the terminal Pleistocene, about 14,800–13,300 BP (uncalibrated), and this marks the beginning of the Neolithic. Agriculture in the eastern part of Asia emerged only in the Holocene. The earliest trace of millet cultivation in north China can now be placed at ∼9200 BP, and rice domestication in south China is dated to ∼8000 BP. Pottery in East Asia definitely preceded agriculture. The term “civilization,” which implies the presence of a state level of social organization and written language, has been misused by scholars who assert the existence of a very early “Yangtze River civilization” at about 6400–4200 cal BP. The earliest reliable evidence of writing in China is dated only to about 3900–3000 cal BP, and no “civilization” existed in East Asia prior to this time.

scholarly journals Significant impact of the East Asia monsoon on ozone seasonal behavior in the boundary layer of Eastern China and the west Pacific region

2008 ◽  
Vol 8 (24) ◽  
pp. 7543-7555 ◽  
Author(s):  
Y. J. He ◽  
I. Uno ◽  
Z. F. Wang ◽  
P. Pochanart ◽  
J. Li ◽  
...  
Keyword(s):  
Boundary Layer ◽  
East Asia ◽  
Summer Monsoon ◽  
Eastern China ◽  
Pacific Region ◽  
The West ◽  
Seasonal Behavior ◽  
West Pacific ◽  
East Asia Monsoon ◽  
Monsoon Index

Abstract. The impact of the East Asia monsoon on the seasonal behavior of O3 in the boundary layer of Eastern China and the west Pacific region was analyzed for 2004–2006 by means of full-year nested chemical transport model simulations and continuous observational data obtained from three inland mountain sites in central and eastern China and three oceanic sites in the west Pacific region. The basic common features of O3 seasonal behaviors over all the monitoring sites are the pre- and post-monsoon peaks with a summer trough. Such bimodal seasonal patterns of O3 are predominant over the region with strong summer monsoon penetration, and become weaker or even disappear outside the monsoon region. The seasonal/geographical distribution of the pre-defined monsoon index indicated that the East Asia summer monsoon is responsible for the bimodal seasonal O3 pattern, and also partly account for the differences in the O3 seasonal variations between the inland mountain and oceanic sites. Over the inland mountain sites, the O3 concentration increased gradually from the beginning of the year, reached a maximum in June, decreased rapidly to the summer valley in July or August, and then peaked in September or October, thereafter decreased gradually again. Over the oceanic sites, O3 abundance showed a similar increasing trend beginning in January, but then decreased gradually from the end of March, followed by a wide trough with the minimum in July and August and a small peak in October or November. A sensitivity analysis performed by setting China-emission to zero revealed that the chemically produced O3 from China-emission contributed substantially to the O3 abundance, particularly the pre- and post-monsoon O3 peaks, over China mainland. We found that China-emission contributed more than 40% to total boundary layer O3 during summertime (60–70% in July) and accounted for about 40 ppb of each peak value over the inland region if without considering the effect of the nonlinear chemical productions. In contrast, over the oceanic region in the high monsoon index zone, the contribution of China-emission to total boundary layer O3 was always less than 20% (<10 ppb), and less than 10% in summer.

Mantle dynamics beneath East Asia constrained by Sr, Nd, Pb and Hf isotopic systematics of ultramafic xenoliths and their host basalts from Hannuoba, North China

2008 ◽  
Vol 248 (1-2) ◽  
pp. 40-61 ◽  
Author(s):  
Sung Hi Choi ◽  
Samuel B. Mukasa ◽  
Xin-Hua Zhou ◽  
Xiangyang Helena Xian ◽  
Alexandre V. Andronikov
Keyword(s):  
East Asia ◽  
North China ◽  
Mantle Dynamics ◽  
Ultramafic Xenoliths

Identification and trend analysis of homogeneous rainfall zones over the East Asia monsoon region

2014 ◽  
Vol 35 (7) ◽  
pp. 1422-1433 ◽  
Author(s):  
Jehangir Ashraf Awan ◽  
Deg-Hyo Bae ◽  
Kyung-Joong Kim
Keyword(s):  
East Asia ◽  
Trend Analysis ◽  
Monsoon Region ◽  
East Asia Monsoon

The Diffusion Route and Chronology of Korean Plant Domestication

1982 ◽  
Vol 41 (3) ◽  
pp. 519-529 ◽  
Author(s):  
Chong-pil Choe
Keyword(s):  
Oryza Sativa ◽  
East Asia ◽  
South China ◽  
Korean Peninsula ◽  
Food Production ◽  
North China ◽  
Plant Domestication ◽  
Sorghum Vulgare ◽  
North And South ◽  
And Diffusion

Problems concerning the emergence and geographical diffusion of food production in East Asia have long interested archaeologists and historians. However, attempts to reconstruct the chronology and diffusion routes from the so-called nuclear zones of both North and South China through the Korean peninsula and Japan have been less than convincing. In North China, the crops involved were millet (Setaria italica) and kaoliang (Sorghum vulgare); in South China, rice (Oryza sativa japonica and indica).

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