Mesoscale patterns associated with two distinct heatwave events in coastal Santa Barbara, California, and their impact on local fire risk conditions

Duine, Gert‐Jan; Carvalho, Leila M. V.; Jones, Charles

doi:10.1016/j.wace.2022.100482

Cited by 7 publications

(12 citation statements)

References 37 publications

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“…On the one hand, as the economic consequences of the COVID-19 epidemic further spreading, the tail risk of commodity futures markets also expanded. On the other hand, the mountain fire in California burned more than 2.2 million acres, which amplified the risk of agricultural futures markets (Duine et al, 2022).…”

Section: Structural Changes Testmentioning

confidence: 99%

Global climate change and commodity markets: A hedging perspective

Jia

Chen

Han

et al. 2023

Journal of Futures Markets

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This paper aims to measure the tail‐risk dependence between climate change and commodity futures markets. We utilize Morgan Stanley Capital International Climate Change Index (CCI) to serve as a proxy indicator of the stock market climate change for examining the tail‐risk spillover effect among 16 major commodity futures. Using GARCH–Copula–CoVaR framework, we show that extreme climate change has a significant tail‐risk spillover effect on commodity futures markets, in which agricultural and energy futures are affected by climate change most. We then adopt the copula‐based generalized autoregressive conditional heteroskedasticity (GARCH) model to compute the optimal hedge ratio among each pair of CCI with commodity futures, which performs well economic advantages for all 16 commodities. Compared with hedging against commodity index, CCI has a more significant hedging effect on metal and energy subindex futures. Therefore, we finally suggest an effective hedging portfolio composed of CCI and subindex futures in a significant economic sense.

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Section: Structural Changes Testmentioning

confidence: 99%

Global climate change and commodity markets: A hedging perspective

Jia

Chen

Han

et al. 2023

Journal of Futures Markets

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“…In addition, the downslope flow leads to an increase in air temperatures and a drop in humidity downstream. Duine et al (2022) reported that synoptic conditions during a HW induced downslope windstorm and high temperatures, as well as critical fire weather conditions in the Santa Ynez Mountains in coastal Santa Barbara (California, USA).…”

Section: Introductionmentioning

confidence: 99%

“…HWs are generally originated by a quasi‐stationary anticyclonic circulation, which can be a persistent high‐pressure system or even a full blocking pattern (dos Reis et al, 2019; Geirinhas et al, 2018; Pezza et al, 2012). However, they can be influenced by local (e.g., heat islands; L. Wang and Li (2021)) or regional features (e.g., topography or winds patterns; W. Wang et al (2016); Duine et al (2022); Stefanello et al (2023)), climate extremes (e.g., droughts; Libonati et al (2022)), land‐atmospheric interactions (Miralles et al (2019); Geirinhas et al (2022)) and others. Among the HW investigations found in the literature, there are few studies that assess the influence topographically‐induced mesoscale circulations on such events.…”

Section: Introductionmentioning

confidence: 99%

Winter heat waves characteristics associated with downslope windstorm in south Brazil

Rosa

Stefanello

Reis

et al. 2023

Intl Journal of Climatology

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The air temperature anomaly was analysed in 16 consecutive winters from 2004 to 2019 in southern Brazil using reanalysis data and hourly atmospheric observations. In this study, 13 heat wave (HW) episodes were identified using the percentile methodology. All identified episodes are associated with the occurrence of a downslope windstorm known as Vento Norte (VNOR; Portuguese for ‘North Wind’). The VNOR is characterized by a sharp increase in air temperature combined with constant, strong, gusty winds from the north and a drop in relative humidity. The average duration was about 5 days for HW and 18 h for VNOR being than in 59.5% of the HW hours, the VNOR windstorm was also detected. The main atmospheric variables were compared during the periods of winter, HW and the VNOR windstorm. The analysis showed that HW alters local weather and climate conditions, with the more pronounced features associated with the VNOR flow. A more detailed investigation comparing the atmospheric variables collected north and south of an abrupt change in terrain altitude (400 m) revealed that the main cause of the amplification of the atmospheric variable anomalies in the centre of the state of Rio Grande do Sul was the simultaneous occurrence of HW and VNOR.

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“…A less studied type of interaction concerns the coexistence of heat waves (HWs) and DWs [11,13,[25][26][27][28]. From a meteorological point of view, an HW can be defined as a sustained and unusual period of elevated air temperatures [29][30][31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

“…From a meteorological point of view, an HW can be defined as a sustained and unusual period of elevated air temperatures [29][30][31][32][33][34]. Although progress has been made in understanding the synoptic-scale characteristics of HWs (see, e.g., [11,28,[35][36][37][38], among many others), the role of ABL dynamics in this phenomenon remains poorly explored and documented. In Zhang et al [37], the authors showed that the influence of HWs on the structure of the ABL depends on factors ranging from local to synoptic.…”

Section: Introductionmentioning

confidence: 99%

Spatial–Temporal Analysis of a Summer Heat Wave Associated with Downslope Flows in Southern Brazil: Implications in the Atmospheric Boundary Layer

et al. 2022

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This study investigates a summer heat wave (HW) associated with downslope winds (DWs) affecting the central region of the state of Rio Grande do Sul (RS), Brazil. The temporal evolution of both phenomena is analyzed in the atmospheric boundary layer (ABL) using a combination of micrometeorological and rawinsonde data. For spatial characterization, ERA-5 reanalysis data are used. The HW covered a large area in southern Brazil, Argentina, and Paraguay. The main features of the HW were locally enhanced in the central region of RS by the development of DWs. The establishment of DWs near the surface depends on the dynamics of the ABL and local topographic features. The results showed that DWs that occurred during the HW contributed to the extreme temperatures and were associated with strong northerly winds, low relative humidity, and a drop in the dew points. Together, these extreme events influenced the turbulent and mean flow patterns of the ABL. The increase in turbulent activity associated with the warming of the ABL favored enhanced growth of morning ABL, while at night the simultaneous effects of radiative and turbulence cooling inhibited the formation of a strong stable ABL. The analysis highlights the complex interplay of synoptic and local factors associated with DWs and HW.

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Mesoscale patterns associated with two distinct heatwave events in coastal Santa Barbara, California, and their impact on local fire risk conditions

Cited by 7 publications

References 37 publications

Global climate change and commodity markets: A hedging perspective

Global climate change and commodity markets: A hedging perspective

Winter heat waves characteristics associated with downslope windstorm in south Brazil

Spatial–Temporal Analysis of a Summer Heat Wave Associated with Downslope Flows in Southern Brazil: Implications in the Atmospheric Boundary Layer

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