<strong class="journal-contentHeaderColor">Abstract.</strong> The interaction between co-occurring drought and hot conditions is often particularly damaging to crop's health may cause crop failure. Climate change exacerbates such risks due an increase in the intensity frequency of dry events many land regions. Hence, here we model trivariate dependence spring maximum temperature precipitation wheat barley yields over two province regions Spain with nested copulas. Based on full joint...

The Iberian Peninsula (IP) is a drought-prone area located in the Mediterranean which presents significant tendency towards dryness during last decades, reinforcing need for continuous monitoring of drought. long-term evolution drought IP analyzed, using Standardized Precipitation Evaporation Index (SPEI) and (SPI), period 1901–2012 three subperiods: 1901–1937, 1938–1974, 1975–2012. SPI SPEI were calculated with 12-month time scale, data from Climatic Research Unit (CRU) database. Trends...

Droughts are a long-term weather-driven extreme event which occurs worldwide with great socio-economic impacts, namely in the Mediterranean and Iberian regions. In changing climate rising temperatures, events, such as droughts, expected to increase frequency intensity, particularly climates. this context, assessment of evolution drought terms its duration intensity Peninsula (IP) is paramount, it affects several activities. The use new high-resolution gridded datasets allows for...

Fire is a natural hazard that dependent on climate, vegetation, and human activities, climate conditions fuel availability in Portugal make it fire prone country. Moreover, extreme weather have led to three severe seasons this century, namely 2003, 2005, 2017, which caused large burned areas, economical losses. The relationship between area has been extensively studied, but the effect intensity less understood, despite being an important variable for propagation suppression.In work,...

This paper deals with numerical and experimental investigation of a gully under exceptional situations after the sewer system becomes pressurized. These results are useful for calibration validation linking elements found in Dual Drainage (DD) models. The were obtained MLE (Multiple-Linking-Element) installation that allows simulation full surcharge flow through gully. consists an 8 m long 0.5 wide channel, fitted 0.6 × 0.3 80 mm diameter pipe inlet at bottom. using three-dimensional...

The potential groundwater-dependent vegetation (pGDV) in the Iberian Peninsula (IP) was mapped, with a simple method, hereafter referred to as SRS-pGDV, that uses only Normalized Difference Vegetation Index (NDVI) time series retrieved from Moderate-Resolution Imaging Spectroradiometer (MODIS) Terra V6 product, covering period February 2000 April 2018. NDVI standardized, minimize effect of different land cover types. extreme drought event 2004/2005 used perform classification. Considering...

We evaluated the response of vegetation’s photosynthetic activity to drought conditions from 1998 2014 over Romania and Republic Moldova. The connection between vegetation stress events was assessed by means a correlation analysis monthly Standardized Precipitation Evaporation Index (SPEI), at several time scales, Normalized Difference Vegetation (NDVI), as well an assessment simultaneous occurrence extremes in both indices. relationship made for growing season (from April October entire...

Abstract. Extreme weather events, such as droughts, have been increasingly affecting the agricultural sector, causing several socio-economic consequences. The growing economy requires improved assessments of drought-related impacts in agriculture, particularly under a climate that is getting drier and warmer. This work proposes probabilistic model intended to contribute drought risk management rainfed cropping systems. Our methodology based on bivariate copula approach using elliptical...

Abstract The compound occurrence of extreme weather and/or climate events can cause stronger negative impacts than the individual events, and its frequency is increasing in several regions world. In this work, effect antecedent drought conditions on hot extremes during months December–February Australia was analysed for two periods (1979–2019 1950–2019). standardized precipitation evapotranspiration index (SPEI) indices number days (NHD) nights (NHN) were used to assess temperature events....

Mediterranean European countries, including Portugal, are considered fire-prone regions, being affected by fire events every summer. Nonetheless, Portugal has been recording large burned areas over the last 20 years, which not only strongly associated with hot and dry conditions, but also high fuel availability in ecosystems. Due to recent catastrophic seasons, implementing preventive policies during pre-fire season, which, turn, can optimize combat strategies season. In this context, our...

Land degradation is recognized as an important environmental and social problem in arid semi-arid regions, particularly within a climate change context. In the last three decades entire Mediterranean basin has been affected by more frequent droughts, covering large sectors often lasting than one year. The Iberian Peninsula equally intense drought events since 1980s. According to latest IPCC report region will suffer further hydrological stress coming decades, consequence of diminishing...

Abstract The occurrence of compound drought and hot events has been shown to cause stronger socio-economic, environmental health impacts than the isolated events. Moreover, frequency these increased unevenly throughout world is expected keep increasing in several regions. In this work, an assessment summer months Australia was made, using copula functions. Drought conditions were identified by Standardized Precipitation Evapotranspiration Index (SPEI) indices Number Hot Days (NHD) Nights...

Abstract. In the context of sustainable agricultural management, drought monitoring plays a crucial role in assessing vulnerability agriculture to occurrence. Drought events are very frequent Iberian Peninsula (and Portugal particular), and an increase frequency these extreme expected near future. Therefore, quantitative assessment natural-ecosystem is still challenging, mainly due difficulties having common definition vulnerability. Consequently, several methods have been proposed assess...

Abstract. Drought and heat events stress agricultural systems may threaten food security. The interaction between co-occurring drought hot conditions is often particularly damaging to crop's health cause crop failure. In this context, traditional univariate analyses not be adequate for reliable risk assessment of failure associated with compound hazards. Climate change exacerbates such risks due an increase in the intensity frequency dry many land regions. Here we model trivariate dependence...

Abstract. In this work, the impacts of drought events on vegetation activity in period 1998–2014 were analysed, an area located southeastern Europe, using Standardized Precipitation Evaporation Index (SPEI) at several time scales, and Normalized Difference Vegetation (NDVI), as obtained by SPOT/VEGETATION. A correlation analysis between monthly NDVI SPEI was performed, well assessment simultaneous occurrence low activity. The performed from April to October, corresponding months showing...

Compound extremes are a very important problem that is observed in various areas. Whenever several hazards occur, jointly or cascade, their independent extreme effects may not be relevant, while simultaneous impact(s) quite devastating. The occurrence of wildfires Portugal major societal and environmental concern, which happens every year from June to October. high temperatures the late Spring/early Summer, associated with low values humidity, known enhance fire prone conditions. association...

Portugal is a fire-prone country, due to climate conditions that drive high fuel availability. In the 21st century, several catastrophic fire seasons have occurred, with an extremely total burned area and loss of human lives. Extreme typically occur under hot dry conditions, such as 2003, 2005, 2017, although wind known facilitate spread, occurred in October 2017 Ophelia storm.In this work, bivariate relationship between Fire Radiative Power (FRP), daily temperature, speed was assessed,...

Large burned areas (BA) in southeastern Australia were regularly registered during hot and dry years, such as the Black Saturday (2009) Summer (2019-2020) extreme bushfires. These types of climate conditions are expected to become more frequent, leading an increased risk large BA this region. In work, influence drought events on was assessed, using correlation copula functions. Bivariate functions fitted, conditional probabilities given extremes computed. Three classes intensity studied,...