Spatio-temporal expressions of precessional-scale stalagmite δ18O variations from the Asian monsoon area

2021 ◽  
pp. 110720
Author(s):  
Shushuang Liu ◽  
Dianbing Liu ◽  
Yongjin Wang ◽  
Lingzhe Zou ◽  
Hui Gao
Keyword(s):  
Asian Monsoon ◽  
Monsoon Area ◽  
Temporal Expressions ◽  
Spatio Temporal

scholarly journals Linking Holocene East Asian monsoon variability to solar forcing and ENSO activity: Multi-proxy evidence from a peatland in Northeastern China

The Holocene ◽  
2021 ◽  
pp. 095968362199466
Author(s):  
Nannan Li ◽  
Arash Sharifi ◽  
Frank M Chambers ◽  
Yong Ge ◽  
Nathalie Dubois ◽  
...  
Keyword(s):  
Asian Monsoon ◽  
East Asian Monsoon ◽  
Asian Summer Monsoon ◽  
East Asian ◽  
Northeastern China ◽  
Solar Irradiation ◽  
Enso Events ◽  
Monsoon Area ◽  
Wavelet Coherency ◽  
Cross Wavelet

High-resolution proxy-based paleoenvironmental records derived from peatlands provide important insights into climate changes over centennial to millennial timescales. In this study, we present a composite climatic index (CCI) for the Hani peatland from northeastern China, based on an innovative combination of pollen-spore, phytolith, and grain size data. We use the CCI to reconstruct variations of the East Asian summer monsoon (EASM) intensity during the Holocene. This is accomplished with complete ensemble empirical mode decomposition (CEEMD), REDFIT, and cross-wavelet coherency analysis to reveal the periodicities (frequencies) of the multi-proxy derived CCI sequences and to assess potential external forcing of the EASM. The results showed that periodicities of ca. 300–350, 475, 600, 1075, and 1875 years were present in the Hani CCI sequence. Those periodicities are consistent with previously published periodicities in East Asia, indicating they are a product of external climate controls over an extensive region, rather than random variations caused by peatland-specific factors. Cross-wavelet coherency analysis between the decomposed CCI components and past solar activity reconstructions suggests that variations of solar irradiation are most likely responsible for the cyclic characteristics at 500-year frequency. We propose a conceptual model to interpret how the sun regulates the monsoon climate via coupling with oceanic and atmospheric circulations. It seems that slight solar irradiation changes can be amplified by coupling with ENSO events, which result in a significant impact on the regional climate in the East Asian monsoon area.

THE SPACES OF MYTH IN KAZUO ISHIGURO’S THE REMAINS OF THE DAY: EXPLORING THE INTERSECTIONS OF MEMORY AND HISTORY

Ensemble ◽  
2021 ◽  
Vol 2 (2) ◽  
pp. 234-242
Author(s):  
Medha Bhadra Chowdhury ◽  
Keyword(s):  
Identity Politics ◽  
Cultural Beliefs ◽  
Traditional Values ◽  
Confined Space ◽  
Spatial Dimensions ◽  
Temporal Expressions ◽  
Spatio Temporal ◽  
Post War ◽  
The Individual ◽  
Historical Past

Kazuo Ishiguro’s The Remains of the Day (1989) reconstructs the experiences of an ageing butler, Stevens, trapped within the confined space of the house he has served in for many years. The contours of memory are drawn along the spatial dimensions of the house which serve as a space of contestation between traditional values and emergent cultural beliefs in the post-war period. Physical modifications on the architecture produce continuities and alterations within the subject, who inhabits the space. This paper seeks to explore the dynamics of remembering and forgetting which are determined by the sites of memory and which trace historical changes as well as shifts in identity politics in Ishiguro’s novel. The paper critically assesses the idea of space, its functional dimension and mythic commemoration in relation to a symbolic historical past. It examines the development of subjectivity through the expansion of memory embodied in material form and the complex relationship between history and myth-making, which complicates individual identity. This paper further proposes that these spatio-temporal expressions can be understood as not only confined to the individual but may be extended to the domain of public memory and contextualized in a post-war British cultural politics of grief.

scholarly journals Transport of the 2017 Canadian wildfire plume to the tropics via the Asian monsoon circulation

2019 ◽  
Vol 19 (21) ◽  
pp. 13547-13567 ◽  
Author(s):  
Corinna Kloss ◽  
Gwenaël Berthet ◽  
Pasquale Sellitto ◽  
Felix Ploeger ◽  
Silvia Bucci ◽  
...  
Keyword(s):  
Radiative Forcing ◽  
Asian Monsoon ◽  
Regional Climate ◽  
Climate Impact ◽  
Monsoon Circulation ◽  
Aerosol Layer ◽  
Fire Plume ◽  
Monsoon Area ◽  
The Tropics ◽  
The Impact

Abstract. We show that a fire plume injected into the lower stratosphere at high northern latitudes during the Canadian wildfire event in August 2017 partly reached the tropics. The transport to the tropics was mediated by the anticyclonic flow of the Asian monsoon circulation. The fire plume reached the Asian monsoon area in late August/early September, when the Asian monsoon anticyclone (AMA) was still in place. While there is no evidence of mixing into the center of the AMA, we show that a substantial part of the fire plume is entrained into the anticyclonic flow at the AMA edge and is transported from the extratropics to the tropics, and possibly the Southern Hemisphere particularly following the north–south flow on the eastern side of the AMA. In the tropics the fire plume is lifted by ∼5 km in 7 months. Inside the AMA we find evidence of the Asian tropopause aerosol layer (ATAL) in August, doubling background aerosol conditions with a calculated top of the atmosphere shortwave radiative forcing of −0.05 W m−2. The regional climate impact of the fire signal in the wider Asian monsoon area in September exceeds the impact of the ATAL by a factor of 2–4 and compares to that of a plume coming from an advected moderate volcanic eruption. The stratospheric, trans-continental transport of this plume to the tropics and the related regional climate impact point to the importance of long-range dynamical interconnections of pollution sources.

Different spatio-temporal expressions of three otx homeoprotein transcripts during zebrafish embryogenesis

1994 ◽  
Vol 27 (2) ◽  
pp. 221-231 ◽  
Author(s):  
Hisashi Mori ◽  
Yoshitaka Miyazaki ◽  
Takao Morita ◽  
Hiroyuki Nitta ◽  
Masayoshi Mishina
Keyword(s):  
Temporal Expressions ◽  
Spatio Temporal ◽  
Zebrafish Embryogenesis

Topical and Spatio-Temporal Search over Distributed Online Databases

2012 ◽  
pp. 386-403
Author(s):  
Nikos Zotos ◽  
Sofia Stamou
Keyword(s):  
Temporal Orientation ◽  
Similarity Metrics ◽  
Spatial Similarity ◽  
Online Databases ◽  
Geographic Coverage ◽  
Contextual Elements ◽  
Temporal Expressions ◽  
Spatio Temporal ◽  
Database Content ◽  
Temporal Search

In this chapter, the authors propose a novel framework for the support of multi-faceted searches over distributed Web-accessible databases. Towards this goal, the authors introduce a method for analyzing and processing a sample of the database contents in order to deduce the topical, the geographic, and the temporal orientation of the entire database contents. To extract the database topics, the authors apply techniques leveraged from the NLP community. To identify the database geographic footprints, the authors first rely on geographic ontologies in order to extract toponyms from the database content samples and then employ geo-spatial similarity metrics to estimate the geographic coverage of the identified toponyms. Finally, to determine the time aspects associated with the database entities, the authors extract temporal expressions from the entities’ contextual elements and utilize a time ontology against which the temporal similarity between the identified entities is estimated.

Effects of climate change on the thermal structure of lakes in the Asian Monsoon Area

2011 ◽  
Vol 112 (3-4) ◽  
pp. 859-880 ◽  
Author(s):  
Hye Won Lee ◽  
Eun Jung Kim ◽  
Seok Soon Park ◽  
Jung Hyun Choi
Keyword(s):  
Climate Change ◽  
Asian Monsoon ◽  
Thermal Structure ◽  
Monsoon Area
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