The Effects of Dominant Driving Forces on Summer Precipitation during Different Periods in Beijing

Li, Fuxing; He, Li

doi:10.3390/atmos8030044

Cited by 7 publications

(6 citation statements)

References 59 publications

(64 reference statements)

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“…Moreover, the amount of precipitation ranges from more than 600 mm in the northeast and southwest to approximately 500 mm in the south, and this variation is correlated with the decrease in elevation from the mountains to the plain. In addition, the precipitation from June to September accounts for 81% of the total annual amount [45]. The sparse and uneven intra-annual distribution of precipitation aggravates the deficiency of water resources in Beijing [9].…”

Section: Introductionmentioning

confidence: 99%

Sustainability Assessment of Water Resources in Beijing

Yang

2020

Water

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A sustainability assessment of water resources is essential for maintaining regional sustainable development. In this study, a comprehensive assessment of changes in the sustainability of the water resource system in Beijing from 2008 to 2018 was conducted on the basis of the driver-pressure-state-impact-response (DPSIR) model. To reflect the impacts of humans on the water consumption and pollution of water resources, the water footprint was considered. In addition, key factors that affect the sustainability of water resources were filtered by the modified entropy method. The results indicated that all drivers, pressures, states, impacts, and responses demonstrated increasing tendencies. As a result, a remarkable improvement in the sustainability of the water system, which was mitigated from an alert state to a good state, was achieved due to the comprehensive effect of the indexes. From these results, we inferred that the sustainability of regional water resources could only be achieved through a comprehensive consideration of regional social, economic, and environmental water systems and climate change. Therefore, formulating medium- and long-term urban, economic, and water development plans and adjusting medium- and short-term water utilization programs could contribute to the sustainable utilization of regional water resources.

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Section: Introductionmentioning

confidence: 99%

Sustainability Assessment of Water Resources in Beijing

Yang

2020

Water

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“…Characterization of wavelet can be done based on its localization in time and frequency. Measurement of correlation among two-time series is called wavelet correlation and can be computed using the following equation (Grinsted et al, 2004;Li & He, 2017).…”

Section: Methodsmentioning

confidence: 99%

Wavelet analysis based VTEC variability over mid-latitude region Sukkur, Pakistan and its comparison with IRI models during 2019-2020

Shahzad¹,

Hafeez²,

Júnior³

et al. 2022

Nat. App. Sci. Int. J.

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The Total Electron Content (TEC) from the Sukkur GPS station is studied during the final phase of the solar cycle 24 and the initial phase of solar cycle 25 (2019-2020). TEC comparisons are made with three international reference ionospheric models: IRI-2007, IRI-2012 and IRI-2016. The finding of the study indicates that IRI-2016 is better than IRI-2007 and IRI-2012 in monthly values using wavelet transformation. Moreover, the seasonal variations between observed and modelled VTEC were observed maximum during the spring season. Similarly, the IRI-2016 exhibited maximum correlation (i.e., r > 0.8) as compared to the other two models for both solar cycle phases. This study also includes a cross-correlation of GPS-VTEC with several storm indices (Kp, Dst, Ap) via wavelet transformation. In this paper, the wavelet spectrum is analysed for two-year data (2019-2020) to visualize the impact of geomagnetic storm indices on VTEC. Storms of different intensities during 2019-2020 solar activity were also analysed, where maximum correlation from wavelet transformation between GPS VTEC and geomagnetic indices was recorded during the initial solar phase of cycle 25. These kinds of studies assist to correct the measured GPS VTEC and help to improve predicted VTEC over mid-latitude regions.

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“…The wavelet analysis includes CWT, XWT, and WTC. A specific definition and calculation process of wavelet analysis can be found in Li and He [44].…”

Section: Wavelet Analysismentioning

confidence: 99%

Correlations between Summer Discharge and South Asian Summer Monsoon Subsystems in Mekong River Basin

Guo

2023

Atmosphere

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Hydrological conditions are strongly regulated by monsoon systems in the Mekong River Basin (MRB), while relevant studies investigating the intensity of the rainy season are still insufficient. This study employed the Mann-Kendall (M-K) test, Sen’s slope estimator, and innovation trend analysis to detect the variation of summer discharge in the MRB. Wavelet analysis is used to investigate the correlation between discharge and two South Asian summer monsoon subsystems (SAMI1 and SAMI2). Results show that the summer discharge in the MRB generally shows significant downward trends during 1970–2016 with a Z value range of −3.59–−1.63, while the high discharge at Vientiane, Mukdahan, and Pakse increases after 1970. The mutation years of the summer discharge series are around 2010 for Chiang Sean and Vientiane, and in 2015 for Luang Prabang, which resulted from the newly built large dams, Xiaowan and Nuozhadu. The wavelet analysis shows that the SAMI1 can be used to predict the summer discharge at Chiang Sean at a ~8-year timescale, while the SAMI2 correlates with the summer discharge well at a 1–8-year scale, especially at Mukdahan and Kratie during 1980–2016.

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The Effects of Dominant Driving Forces on Summer Precipitation during Different Periods in Beijing

Cited by 7 publications

References 59 publications

Sustainability Assessment of Water Resources in Beijing

Sustainability Assessment of Water Resources in Beijing

Wavelet analysis based VTEC variability over mid-latitude region Sukkur, Pakistan and its comparison with IRI models during 2019-2020

Correlations between Summer Discharge and South Asian Summer Monsoon Subsystems in Mekong River Basin

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