Anna Ukkola

Biographic Data

ID6820652
NAMEAnna Ukkola
GIVEN NAMESAnna
FAMILY NAMEUkkola
SIGNATUREUKKOLA A
AFFILIATIONSAustralian National University
ORCID0000-0003-1207-3146
VERIFIEDYes
TOTAL WORKS7
TOTAL CITATIONS0
WORKS AS AUTHOR7
WORKS AS EDITOR0
FIRST PUBLICATION YEAR2016
LATEST PUBLICATION YEAR2021
H-INDEX0

  • Connections of climate change and variability to large and extreme forest fires in southeast Australia

    Open AccessNerilie J Abram, Benjamin J Henley et al.ARTICLECommunications Earth & Environment2021

    The 2019/20 Black Summer bushfire disaster in southeast Australia was unprecedented: the extensive area of forest burnt, the radiative power of the fires, and the extraordinary number of fires that developed into extreme pyroconvective events were all unmatched in the historical record. Australia’s hottest and driest year on record, 2019, was characterised by exceptionally dry fuel loads that primed the landscape to burn when exposed to dangerous…

  • Amplification of risks to water supply at 1.5 °C and 2 °C in drying climates

    Open AccessBenjamin J Henley, Murray Peel et al.ARTICLEEnvironmental Research Letters2019

    Human-induced climate change poses a major threat to the reliable water supply in many highly populated regions. Here we combine hydrological and climate model simulations to evaluate risks to the water supply under projected shifts in the climate at the Paris Agreement warming levels. Modelling the primary surface water sources for Melbourne, Australia, we project that the risk of severe water supply shortage to the climate-dependent portion of …

  • The aridity Index under global warming

    Open AccessPeter Greve, M L Roderick et al.ARTICLEEnvironmental Research Letters2019

    Aridity is a complex concept that ideally requires a comprehensive assessment of hydroclimatological and hydroecological variables to fully understand anticipated changes. A widely used (offline) impact model to assess projected changes in aridity is the aridity index (AI) (defined as the ratio of potential evaporation to precipitation), summarizing the aridity concept into a single number. Based on the AI, it was shown that aridity will generall…

  • Exploring the stationarity of Australian temperature, precipitation and pan evaporation records over the last century

    Open AccessAnna Ukkola, M L Roderick et al.ARTICLEEnvironmental Research Letters2019

    Australia has experienced regional climate trends over recent decades with consequences for agriculture and water management. We investigate the statistical significance of these trends at annual and seasonal scales using the concept of stationarity. Using long-term high quality regional-scale observations of temperature, precipitation and pan evaporation (a measure of atmospheric evaporative demand), we find that despite highly significant incre…

  • Intensification of precipitation extremes in the world’s humid and water-limited regions

    Open AccessMarkus G Donat, Oliver Angélil et al.ARTICLEEnvironmental Research Letters2019

    Changes in precipitation totals and extremes are among the most relevant consequences of climate change, but in particular regional changes remain uncertain. While aggregating over larger regions reduces the noise in time series and typically shows increases in the intensity of precipitation extremes, it has been argued that this may not be the case in water-limited regions. Here we investigate long-term changes in annual precipitation totals and…

  • Land surface models systematically overestimate the intensity, duration and magnitude of seasonal-scale evaporative droughts

    Open AccessAnna Ukkola, Martin G De Kauwe et al.ARTICLEEnvironmental Research Letters2016

    Land surface models (LSMs) must accurately simulate observed energy and water fluxes during droughts in order to provide reliable estimates of future water resources.We evaluated 8 different LSMs (14 model versions) for simulating evapotranspiration (ET) during periods of evaporative drought (Edrought) across six flux tower sites.Using an empirically defined Edrought threshold (a decline in ET below the observed 15th percentile), we show that LSM…

  • Vegetation plays an important role in mediating future water resources

    Open AccessAnna Ukkola, Trevor F Keenan et al.ARTICLEEnvironmental Research Letters2016

    Future environmental change is expected to modify the global hydrological cycle, with consequences for the regional distribution of freshwater supplies. Regional precipitation projections, however, differ largely between models, making future water resource projections highly uncertain. Using two representative concentration pathways and nine climate models, we estimate 21st century water resources across Australia, employing both a process-based…