Temporal and spatial variations of meteorological elements and reference crop evapotranspiration in Alpine regions of Tibet, China

Tang, Pengcheng; Xu, Bing; Tian, Delong; Ren, Jie; Li, Zekun

doi:10.1007/s11356-021-12771-7

Cited by 8 publications

(3 citation statements)

References 42 publications

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“…The solar resource assessment indicator (SREI) was introduced to measure the region's priority level for PV resource development, which incorporates SSR values, stability levels, and topographic effects. SREI = SSR × GHRS × TE (10) where SSR is the annual average surface solar radiation. The higher the value of SREI, the better the exploitable solar radiation available in the area.…”

Section: Topographic Effect and Solar Resource Evaluation Indicatormentioning

confidence: 99%

“…Tao et al [9] proposed a method for rasterizing global daily solar radiation and combined the solar radiation model (Bristow-Campbell model) with the meteorological interpolation model (PRISM) to estimate and analyze the spatial distribution pattern of solar radiation daily. Compared with accurate ground-based measurement, the low infrastructure coverage and challenges of equipment maintenance in the Xizang region led to many limitations [10]. According to statistics, there are a total of 756 meteorological stations in China, of which only 122 observe parameters related to solar radiation [11].…”

Section: Introductionmentioning

confidence: 99%

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Surface Solar Radiation Resource Evaluation of Xizang Region Based on Station Observation and High-Resolution Satellite Dataset

Kong,

Wang,

Cai

et al. 2024

Remote Sensing

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Xizang boasts a vast and geographically complex landscape with an average elevation surpassing 4000 m. Understanding the spatiotemporal distribution of surface solar radiation is indispensable for simulating surface processes, studying climate change, and designing photovoltaic power generation and solar heating systems. A multi-dimensional, long-term, spatial, and temporal investigation of solar radiation in Xizang was conducted using three unique datasets, including the difference in surface solar radiation (SSR) between high-resolution satellite and ground station data, the annual and monthly distribution of SSR, and the interannual–monthly–daily variation and the coefficient of hourly variability. Combined with high-resolution elevation data, a strong linear correlation was shown between the radiation and the elevation below 4000 m. Furthermore, analysis reveals greater differences in data between east and west compared to the center, as well as between summer and winter seasons. SSR levels vary in steps, reaching the highest from Ngari to Shigatse and the lowest in a U-shaped area formed by southeastern Shannan and southern Nyingchi. In June, high monthly SSR coverage was the highest of the year. Since 1960, the annual mean SSR has generally exhibited a declining trend, displaying distinctive trends across various seasons and datasets. Owing to intricate meteorological factors, some regions exhibited double peaks in monthly SSR. Finally, we have introduced a solar resource assessment standard, along with a multidimensional evaluation of the resources, and categorized all townships. We offer a thorough analysis of Xizang’s solar radiation to provide a comprehensive understanding, which will help to prioritize recommendations for PV construction in Xizang.

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Section: Topographic Effect and Solar Resource Evaluation Indicatormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Surface Solar Radiation Resource Evaluation of Xizang Region Based on Station Observation and High-Resolution Satellite Dataset

Kong,

Wang,

Cai

et al. 2024

Remote Sensing

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“…In other regions, such as in Heilongjiang Province 12 and the central arid zone of Ningxia Province 13 , annual ET0 variations have experienced significant decreasing trends. In the Tibetan Plateau and the Loess Plateau, ET0 variations have been found to have more complex trends than other regions of China, namely both increasing and decreasing trends in the ET0 were observed in these regions 3,14 . The Zhangye farmland oasis is located in the Hexi Corridor (102°07'E-103°46'E, 36°31'N-37°55'N), which is a typical arid region in Northwest China.…”

Section: Introductionmentioning

confidence: 99%

Variations and Sensitivity Analysis of Reference Evapotranspiration During 2010-2019 in the Zhangye Farmland Oasis, Northwest China

Fang¹

2021

Preprint

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Reference evapotranspiration (ET0) is an important parameter for agricultural water management in the arid Zhangye farmland oasis. However, the ET0 variations in this oasis over the last decade and meteorological forcings of these variations are unknown. This study investigated the ET0 variations during 2010-2019 in this oasis using the FAO-56 Penman-Monteith (PM) and Hargreaves equations. Results showed that the ET0 features daily and monthly variations with peak values in mid-July and an annual cycle. Although the estimated ET0 series based on the two equations have high correlations in the time domain, the Hargreaves equation always underestimates the ET0 compared to the PM equation. The yearly ET0 showed statistically significant increasing trends (90% significance level) during 2010-2019, while statistically significant increasing trends in monthly ET0 are found only in March and November. Increasing trends reflected in monthly and yearly ET0 are mainly attributed to the increasing maximum temperature and sunshine duration and decreasing relative humidity. Sensitivity analysis demonstrated that the meteorological factor to which the ET0 is most sensitive varies with time scale and equation. Moreover, regression equations used to correct the underestimation associated with the Hargreaves equation for estimating ET0 in the Zhangye farmland oasis also were constructed.

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Spatiotemporal pattern of reference crop evapotranspiration and its response to meteorological factors in Northwest China over years 2000–2019

Zhang

Deng

Yang

et al. 2022

Environ Sci Pollut Res

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Temporal and spatial variations of meteorological elements and reference crop evapotranspiration in Alpine regions of Tibet, China

Cited by 8 publications

References 42 publications

Surface Solar Radiation Resource Evaluation of Xizang Region Based on Station Observation and High-Resolution Satellite Dataset

Surface Solar Radiation Resource Evaluation of Xizang Region Based on Station Observation and High-Resolution Satellite Dataset

Variations and Sensitivity Analysis of Reference Evapotranspiration During 2010-2019 in the Zhangye Farmland Oasis, Northwest China

Spatiotemporal pattern of reference crop evapotranspiration and its response to meteorological factors in Northwest China over years 2000–2019

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