scholarly journals Spatial-temporal Variation of climate comfort in Qinhuangdao in the past 53 years

2019 ◽  
Author(s):  
Jing Xu ◽  
Xianmei Lu ◽  
Zhigang Liu ◽  
Jinmei Song
Keyword(s):  
Temporal Variation ◽  
The Past ◽  
Climate Comfort

Spatio-temporal Variation Characteristics of Surface Net Radiation in China over the Past 50 Years

2013 ◽  
Vol 15 (1) ◽  
pp. 1 ◽  
Author(s):  
Yangzi GAO ◽  
Honglin HE ◽  
Li ZHANG ◽  
Qianqian LU ◽  
Guirui YU ◽  
...  
Keyword(s):  
Temporal Variation ◽  
Net Radiation ◽  
The Past ◽  
Variation Characteristics ◽  
Spatio Temporal

Estimated Temporal Variation of Losses Due to a Recurrence of the 1933 Long Beach Earthquake

2012 ◽  
Vol 28 (1) ◽  
pp. 347-365 ◽  
Author(s):  
Jennifer Swift ◽  
John Wilson ◽  
Toan Nguyen Le
Keyword(s):  
Temporal Variation ◽  
Census Tract ◽  
Unreinforced Masonry ◽  
Seismic Sources ◽  
Long Beach ◽  
Building Stock ◽  
Modeling Tools ◽  
The Past ◽  
New Construction ◽  
The Many

The temporal variation of damage and loss estimates are presented in decadal increments since 1950 for an earthquake on the Newport-Inglewood Fault (NIF) equivalent to the Mw 6.4 1933 Long Beach earthquake. Deterministic damage and loss calculations were performed utilizing Hazus-MH software and updated structural inventories. We estimate that building stock loss density (total losses within each census tract divided by tract area) due to the recurrence of this event in 1950 would have been about $84 million, increasing to $300 million in 2006 (2002 replacement costs). With the phenomenal growth in new construction in Long Beach over the past 50 years, the results indicate that the proportion of wood and unreinforced masonry (URM) buildings predicted to suffer at least moderate damage has stabilized. Given the many seismic sources in this region which also pose significant threats, we demonstrate that modeling tools such as Hazus-MH can provide meaningful estimates of future losses from earthquakes.

Spatial and temporal variation of runoff in the Yangtze River basin during the past 40 years

2008 ◽  
Vol 186 (1) ◽  
pp. 32-42 ◽  
Author(s):  
Jijun Xu ◽  
Dawen Yang ◽  
Yonghong Yi ◽  
Zhidong Lei ◽  
Jin Chen ◽  
...  
Keyword(s):  
Temporal Variation ◽  
River Basin ◽  
Yangtze River ◽  
Yangtze River Basin ◽  
Spatial And Temporal Variation ◽  
The Yangtze River ◽  
The Past ◽  
The Yangtze River Basin

Variation of bacterial communities in Muztagh ice core from 1869 to 2000

2020 ◽  
Author(s):  
Yongqin Liu ◽  
Tandong Yao ◽  
Baiqing Xu
Keyword(s):  
Bacterial Community ◽  
Temporal Variation ◽  
Community Composition ◽  
Bacterial Communities ◽  
Environmental Variables ◽  
Climate Changes ◽  
Bacterial Community Composition ◽  
Ice Core ◽  
The Past ◽  
Stage 1

<p>Many studies focusing on the physical and chemical indicators of the ice core reflected the climate changes. However, only few biological indicators indicated the past climate changes which are mainly focused in biomass rather than diversity. How the biodiversity response to the climate change during the past hundred years is still unknow. Glaciers in Mt. Muztagh Ata region are influenced by the year-round westerly circulation. We firstly disclosed annual variations of bacterial community compositions in ice core over the past 130 years from Muztagh Glacier, the western Tibetan Plateau. Temporal variation in bacterial abundance was strongly controlled by DOC, TN, δ<sup>18</sup>O, Ca<sup>2+</sup>, SO<sub>4</sub><sup>2</sup><sup>−</sup>, NH<sub>4</sub><sup>+</sup> and NO<sub>3</sub><sup>−</sup>. Proteobacteria, Actinobacteria and Firmicutes were the three most abundant bacterial phyla, accounting for 49.3%, 21.3% and 11.0% of the total community, respectively. The abundances of Firmicutes and Bacteroidetes pronouncedly increased over time throughout the entire ice core. UPGMA cluster analysis of the bacterial community composition separated the all ice core samples into two main clusters along the temporal variation. The first cluster consisted of samples from 1951 to 2000 and the second cluster contained main samples during the period of 1869-1950. The stage 1 and stage 2 bacterial community dissimilarities increased linearly with time on the basis of the Bray-Curtis distance, indicating a similar temporal–decay relationship between the stage 1 and stage 2 bacterial communities. Of all the environmental variables examined, only DOC and NH<sub>4</sub><sup>+</sup> exhibited very strong negative correlations with bacterial Chao1-richness. <sup>18</sup>O was another important variable in shaping the ice core bacterial community composition and contributed 1.6% of the total variation. Moreover, DistLM analysis indicated that the environmental variables explained more variation in the stage 1 community (20.1%) than that of the stage 2 community (19.9%).</p>

Spatio-temporal variation of actual evapotranspiration in the Haihe River Basin of the past 50 years

2013 ◽  
Vol 304 ◽  
pp. 133-141 ◽  
Author(s):  
Xiucang Li ◽  
Marco Gemmer ◽  
Jianqing Zhai ◽  
Xuefeng Liu ◽  
Buda Su ◽  
...  
Keyword(s):  
Temporal Variation ◽  
River Basin ◽  
Actual Evapotranspiration ◽  
Haihe River Basin ◽  
Haihe River ◽  
The Past ◽  
Spatio Temporal ◽  
The Haihe River Basin

scholarly journals Spatial-Temporal Characteristics of Arctic Summer Climate Comfort Level in the Context of Regional Tourism Resources from 1979 to 2019

2021 ◽  
Vol 13 (23) ◽  
pp. 13056
Author(s):  
Yutao Huang ◽  
Xuezhen Zhang ◽  
Dan Zhang ◽  
Lijuan Zhang ◽  
Wenshuai Zhang ◽  
...  
Keyword(s):  
Global Warming ◽  
Comfort Level ◽  
The Arctic ◽  
The Past ◽  
Summer Climate ◽  
Regional Tourism ◽  
Tourism Resources ◽  
Summer Temperatures ◽  
Climate Comfort ◽  
Arctic Summer

In the context of global warming, a key scientific question for the sustainable development of the Arctic tourism industry is whether the region’s climate is becoming more suitable for tourism. Based on the ERA5-HEAT (Human thErmAl comforT) dataset from the European Center for Medium-range Weather Forecasts (ECMWF), this study used statistical methods such as climatic tendency rate and RAPS to analyze the spatial-temporal changes in Arctic summer climate comfort zones from 1979 to 2019 and to explore the influence of changes in climate comfort on Arctic tourism. The results showed the following: (1) With the increase in the Arctic summer temperature, the universal thermal climate index (UTCI) rose significantly from 1979 to 2019 at a rate of 0.457 °C/10a. There was an abrupt change in 2001, when the climate comfort changed from “colder” to “cool”, and the climate comfort has remained cool over the past decade (2010–2019). (2) With the increase in Arctic summer temperatures, the area assessed as “comfortable” increased significantly from 1979 to 2019 at a rate of 2.114 × 105 km2/10a. Compared with the comfortable area in the 1980s, the comfortable area increased by 6.353 × 105 km2 over the past 10 years and expanded to high-latitude and high-altitude areas, mainly in Kola Peninsula, Putorana Plateau, and Verkhoyansk Mountains in Russia, as well as the Brooks Mountains in Alaska. (3) With the increase in Arctic summer temperatures, the number of days rated comfortable on 30% of the grid increased significantly from 1979 to 2019 (maximum increase: 31 days). The spatial range of the area with a low level of comfortable days narrowed and the spatial range of the area with a high level of such days expanded. The area with 60–70 comfortable days increased the most (4.57 × 105 km2). The results of this study suggest that global warming exerts a significant influence on the Arctic summer climate comfort level and provides favorable conditions for further development of regional tourism resources.

The Impact of the Sharing Economy on Household Bankruptcy

MIS Quarterly ◽  
2021 ◽  
Vol 45 (3) ◽  
pp. 1213-1248
Author(s):  
Tingting Nian ◽  
◽  
Yuyuan (Anthony) Zhu ◽  
Vijay Gurbaxani ◽  
◽  
...  
Keyword(s):  
Temporal Variation ◽  
Consumer Credit ◽  
Digital Technologies ◽  
Sharing Economy ◽  
Personal Bankruptcy ◽  
The Past ◽  
Default Rates ◽  
Credit Default ◽  
The Impact ◽  
Bankruptcy Rate

Powered by digital technologies, many peer-to-peer platforms, or what is called the sharing economy, have emerged in the past decade. Although the impact of the sharing economy has received considerable attention over the past few years, extant research has not fully documented the impact of the sharing economy on consumers, workers, industry, or society as a whole. In this study, we exploit the geographical and temporal variation in Uber’s entry to examine its impact on the personal bankruptcy rate as well as on other consumer credit default rates. We empirically document the changes in personal bankruptcy filings after Uber’s entry, and show that personal bankruptcy filings under Chapter 7 experience a drop of 0.047 per 1,000 people after Uber enters a county, which translates to a 3.26% reduction in quarterly bankruptcy filings. Uber’s entry also leads to a reduction in Chapter 13 personal bankruptcy filings, but to a smaller degree (0.018 cases per 1,000 people per quarter). We check the validity of our estimates using business bankruptcy filings, which we find are uncorrelated with Uber’s entry.

Climate-related spatial and temporal variation in bill morphology over the past century in Australian parrots

2015 ◽  
Vol 42 (6) ◽  
pp. 1163-1175 ◽  
Author(s):  
Daniel J. E. Campbell-Tennant ◽  
Janet L. Gardner ◽  
Michael R. Kearney ◽  
Matthew R. E. Symonds
Keyword(s):  
Temporal Variation ◽  
Spatial And Temporal Variation ◽  
Past Century ◽  
The Past ◽  
Bill Morphology
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