All Outputs (117)

The nature and extent of bomb tritium remaining in deep vadose zone: A synthesis and prognosis (2024)
Journal Article
Huang, Y., Evaristo, J., Li, Z., Chun, K., Sutanudjaja, E. H., Cardenas, M. B., …van Genuchten, M. T. (in press). The nature and extent of bomb tritium remaining in deep vadose zone: A synthesis and prognosis. Vadose Zone Journal, https://doi.org/10.1002/vzj2.20304

Tritium present in deep vadose zones is a useful tracer for estimating groundwater recharge, but its full utility is constrained by not knowing where and for how long the tritium tracing method remains applicable. We obtained 44 tritium profiles from... Read More about The nature and extent of bomb tritium remaining in deep vadose zone: A synthesis and prognosis.

The spatial configuration of local climate zones reveals effects on wayfinding in human walking (2023)
Journal Article
Fan, P. Y., Chun, K. P., Tan, M. L., Mah, D., Mijic, A., Strickert, G., & Yetemen, O. (2023). The spatial configuration of local climate zones reveals effects on wayfinding in human walking. PLoS ONE, 18(9), e0289780. https://doi.org/10.1371/journal.pone.0289780

The importance of easy wayfinding in complex urban settings has been recognized in spatial planning. Empirical measurement and explicit representation of wayfinding, however, have been limited in deciding spatial configurations. Our study proposed an... Read More about The spatial configuration of local climate zones reveals effects on wayfinding in human walking.

Identifying the impacts of land-use spatial patterns on street-network accessibility using geospatial methods (2023)
Journal Article
Fan, P. Y., Chun, K. P., Mijic, A., Tan, M. L., Zhai, W., & Yetemen, O. (in press). Identifying the impacts of land-use spatial patterns on street-network accessibility using geospatial methods. Geographical Analysis, https://doi.org/10.1111/gean.12374

While the land use-street network nexus is well acknowledged, evidence for the one-way impacts of land-use patterns on street accessibility is still inadequate. The measurements of land-use patterns and street accessibility lack systematic knowledge.... Read More about Identifying the impacts of land-use spatial patterns on street-network accessibility using geospatial methods.

The merit of the North Sea-Caspian pattern in explaining climate variability in the Euro-Mediterranean region (2023)
Journal Article
Çağlar, F., Yetemen, O., Chun, K. P., & Sen, O. L. (2023). The merit of the North Sea-Caspian pattern in explaining climate variability in the Euro-Mediterranean region. International Journal of Climatology, 43(10), 4648-4661. https://doi.org/10.1002/joc.8108

Teleconnection patterns are one of the key features to understanding high-frequency natural climate variability. The North Sea-Caspian Pattern (NCP) was identified as a middle tropospheric dipole and its hydroclimatological implications have been sub... Read More about The merit of the North Sea-Caspian pattern in explaining climate variability in the Euro-Mediterranean region.

Influence of hillslope aspect on a cinder cone evolution: The Sandal Divlit example, Kula, Turkey (2023)
Presentation / Conference
Yetemen, O., Avcioglu, A., Ozcan, O., Simsek, I., Kolbuken, M., Yeo, I., …Sen, O. L. (2023, April). Influence of hillslope aspect on a cinder cone evolution: The Sandal Divlit example, Kula, Turkey. Poster presented at EGU General Assembly 2023, Vienna, Austria

Microclimatic variations in semi-arid ecosystems can cause topographic asymmetry over geologic time scales due to uneven distribution of incoming solar radiation as a function of slope aspect. This phenomenon has long been recognized in geomorphology... Read More about Influence of hillslope aspect on a cinder cone evolution: The Sandal Divlit example, Kula, Turkey.

Investigating links among heatwaves, precipitation, and land use types using the convection-permitting model in the Southwest UK for the 2022 boreal summer (2023)
Presentation / Conference
Chun, K., Ezber, Y., Toker, E., Reboita, M., Rocha, R., Risanto, B., …Castro, C. (2023, April). Investigating links among heatwaves, precipitation, and land use types using the convection-permitting model in the Southwest UK for the 2022 boreal summer

To improve sub-seasonal forecasts, different global initiatives generate continental convection-permitting simulations for resolution less than 10 kilometres for multiple decades. These simulations, however, are based on land use maps with only singl... Read More about Investigating links among heatwaves, precipitation, and land use types using the convection-permitting model in the Southwest UK for the 2022 boreal summer.

Allometric relations between DBH and sapwood area for predicting stand transpiration: Lessons learned from the Quercus genus (2023)
Journal Article
Schoppach, R., Chun, K., & Klaus, J. (2023). Allometric relations between DBH and sapwood area for predicting stand transpiration: Lessons learned from the Quercus genus. European Journal of Forest Research, 142, 797–809. https://doi.org/10.1007/s10342-023-01558-9

Catchment-scale transpiration is commonly determined by the use of sap-flow sensors, and its quantification, which is critical for water and forest management, relies crucially on the total catchment’s sapwood area (As). Species-specific allometric r... Read More about Allometric relations between DBH and sapwood area for predicting stand transpiration: Lessons learned from the Quercus genus.

Importance of tree diameter and species for explaining the temporal and spatial variations of xylem water δ18O and δ2H in a multi-species forest (2023)
Journal Article
Fresne, M., Chun, K. P., Hrachowitz, M., McGuire, K. J., Schoppach, R., & Klaus, J. (2023). Importance of tree diameter and species for explaining the temporal and spatial variations of xylem water δ18O and δ2H in a multi-species forest. Ecohydrology, 16(5), Article e2545. https://doi.org/10.1002/eco.2545

Identifying the vegetation and topographic variables influencing the isotopic variability of xylem water of forest vegetation remains crucial to interpret and predict ecohydrological processes in landscapes. In this study, we used temporally and spat... Read More about Importance of tree diameter and species for explaining the temporal and spatial variations of xylem water δ18O and δ2H in a multi-species forest.

Drift and diffusion functions of historical time series and UKCP18 convection-permitting model outputs for Bristol and Filton (2023)
Presentation / Conference
Chun, K., Danaila, L., & Fossa, M. (2023, March). Drift and diffusion functions of historical time series and UKCP18 convection-permitting model outputs for Bristol and Filton. Presented at LMFL Fluid Mechanics Webinar Series, Lille

As global temperatures continue to rise and affect atmospheric dynamics, there is a growing need to develop methods for investigating the temporal evolution of climate fields. These methods are useful to quantify both short- and long-term changes, as... Read More about Drift and diffusion functions of historical time series and UKCP18 convection-permitting model outputs for Bristol and Filton.

Convection-Permitting Model Simulation based on Local Climate Zones (LCZs) for winter in Istanbul (2022)
Presentation / Conference
Chun, K., Fan, P. Y., He, Q., Yetemen, O., Toker, E., Ezber, Y., & Sen, O. L. (2022, September). Convection-Permitting Model Simulation based on Local Climate Zones (LCZs) for winter in Istanbul

High resolution simulations at kilometre scales from convection-permitting models (CPMs) provide new avenues for studying the dynamics of urban regions that do not use deep convection parameterisation schemes. As a pilot investigation, a sensitive st... Read More about Convection-Permitting Model Simulation based on Local Climate Zones (LCZs) for winter in Istanbul.

Investigating and predicting spatiotemporal variations in vegetation cover in transitional climate zone: A case study of Gansu (China) (2022)
Journal Article
He, Q., Chun, K., Dieppois, B., Chen, L., Fan, P. Y., Toker, E., …Pan, X. (2022). Investigating and predicting spatiotemporal variations in vegetation cover in transitional climate zone: A case study of Gansu (China). Theoretical and Applied Climatology, 150, 283–307. https://doi.org/10.1007/s00704-022-04140-2

Vegetation ecosystems are sensitive to large-scale climate variability in climate transition zones. As a representative transitional climate zone in Northwest China, Gansu is characterized by a sharp climate and vegetation gradient. In this study, th... Read More about Investigating and predicting spatiotemporal variations in vegetation cover in transitional climate zone: A case study of Gansu (China).

An adaptive legal framework for water security concerns in the Guangdong-Hong Kong-Macao Greater Bay Area (2022)
Book Chapter
Ping Yu, F., & Chun, K. (2022). An adaptive legal framework for water security concerns in the Guangdong-Hong Kong-Macao Greater Bay Area. In The Cambridge Handbook of Disaster Law and Policy (131-148). Cambridge University Press. https://doi.org/10.1017/9781108770903.009

For mitigating hydrological hazards, legal frameworks provide enforcement mechanisms to guide water governance which can increase the adaptability and resilience of water resources systems. In Global Sustainable Development Goals (SDG), water securit... Read More about An adaptive legal framework for water security concerns in the Guangdong-Hong Kong-Macao Greater Bay Area.

Extreme precipitation characteristics driven by atmosphere-oceanic modes in the Uruguay river basin based on convective-permitting model simulations (2022)
Presentation / Conference
Chun, K., Danaila, L., Fossa, M., Massei, N., Yetemen, O., Ezber, Y., …Lutfi Sen, O. (2022, August). Extreme precipitation characteristics driven by atmosphere-oceanic modes in the Uruguay river basin based on convective-permitting model simulations. Presented at Advancing Subtropical Climate Dynamics: Diagonal Convergence Zones, Droughts, and Floods in Past, Present and Future Climates, Online

Subtropical areas are sensitive climate transition regions that are affected by atmospheric oscillations linked to tropical heat sources and the stratosphere. In South America, we hypothesise that the quasi-biennial oscillation (QBO) is related to la... Read More about Extreme precipitation characteristics driven by atmosphere-oceanic modes in the Uruguay river basin based on convective-permitting model simulations.

Influence of orographic precipitation on coevolving landforms and vegetation in semi-arid ecosystems (2022)
Journal Article
Srivastava, A., Yetemen, O., Saco, P., Rodriguez, J., Kumari, N., & Chun, K. (2022). Influence of orographic precipitation on coevolving landforms and vegetation in semi-arid ecosystems. Earth Surface Processes and Landforms, 47(12), https://doi.org/10.1002/esp.5427

Topography affects the intensity and spatial distribution of precipitation due to orographic lifting mechanisms and, in turn, influences the prevailing climate and vegetation distribution. Previous modelling studies on the impact of orographic precip... Read More about Influence of orographic precipitation on coevolving landforms and vegetation in semi-arid ecosystems.

Rapid extreme tropical precipitation and flood inundation mapping (flood-tropical) framework: initial testing for the 2021-2022 Malaysia flood (2022)
Journal Article
Tew, Y. L., Tan, M. L., Juneng, L., Chun, K., Hafiz bin Hassan, M., bin Osman, S., …Kabir, M. H. (2022). Rapid extreme tropical precipitation and flood inundation mapping (flood-tropical) framework: initial testing for the 2021-2022 Malaysia flood. ISPRS International Journal of Geo-Information, 11(7), 378

The 2021-2022 flood is one of the most serious flood events in Malaysian history, with approximately 70,000 victims evacuated daily, 54 killed and total losses were up to MYR 6.1 billion. From this devastating event, we realized the lack of extreme p... Read More about Rapid extreme tropical precipitation and flood inundation mapping (flood-tropical) framework: initial testing for the 2021-2022 Malaysia flood.

Impact of the North Sea–Caspian pattern on meteorological drought and vegetation response over diverging environmental systems in western Eurasia (2022)
Journal Article
He, Q., Xu, B., Dieppois, B., Yetemen, O., Lutfi Sen, O., Klaus, J., …Chun, K. (2022). Impact of the North Sea–Caspian pattern on meteorological drought and vegetation response over diverging environmental systems in western Eurasia. Ecohydrology, 15(5), e2446. https://doi.org/10.1002/eco.2446

Emerging drought stress on vegetation over western Eurasia is linked to varying teleconnection patterns. The North Sea–Caspian Pattern (NCP) is a relatively less studied Eurasian teleconnection pattern, which has a role on drought conditions and the... Read More about Impact of the North Sea–Caspian pattern on meteorological drought and vegetation response over diverging environmental systems in western Eurasia.

Eco-hydro-geomorphic evolution of the Sandal Divlit cinder cone, Kula, Turkey (2022)
Presentation / Conference
Yetemen, O., Avcioglu, A., Selim Celik, Y., Simsek, I., Kolbuken, M., Yeo, I., …Lutfi Sen, O. (2022, May). Eco-hydro-geomorphic evolution of the Sandal Divlit cinder cone, Kula, Turkey. Presented at European Geosciences Union (EGU) General Assembly 2022, Vienna

In semi-arid ecosystems, microclimatic variations may lead to topographic asymmetry over geologic time scale due to uneven distribution of incoming solar radiation as a function of slope aspect. This phenomenon has long been recognized in geomorpholo... Read More about Eco-hydro-geomorphic evolution of the Sandal Divlit cinder cone, Kula, Turkey.

Integrating transpiration and xylem water stable isotopes in a process-based model to determine transpiration and discharge age distributions (2022)
Presentation / Conference
Fresne, M., Chun, K., Fabiani, G., Hrachowitz, M., McGuire, K., Moussa, A., …Klaus, J. (2022, May). Integrating transpiration and xylem water stable isotopes in a process-based model to determine transpiration and discharge age distributions. Presented at European Geosciences Union (EGU) General Assembly 2022, Vienna, Austria (and online)

Transpiration is an important component of the catchment water balance, and tree water uptake can significantly influence discharge dynamic and travel times. Tree usually use water of a different age than the water that generates discharge. Most hydr... Read More about Integrating transpiration and xylem water stable isotopes in a process-based model to determine transpiration and discharge age distributions.

A multi-method and multi-model approach for predicting spatio-temporal patterns of sap flow, xylem isotopic composition, and water ages in the critical zone (2022)
Presentation / Conference
Klaus, J., Chun, K., Fabiani, G., Fresne, M., Hrachowitz, M., McGuire, K., …Zehe, E. (2022, May). A multi-method and multi-model approach for predicting spatio-temporal patterns of sap flow, xylem isotopic composition, and water ages in the critical zone. Presented at European Geosciences Union (EGU) General Assembly 2022, Vienna

Vegetation exhibits critical feedback with runoff generation. Trees show distinct water uptake patterns relying on soil water from different depths and groundwater with a mixture of water sources that is commonly very different from runoff in terms o... Read More about A multi-method and multi-model approach for predicting spatio-temporal patterns of sap flow, xylem isotopic composition, and water ages in the critical zone.

Solving water management paradoxes requires a systems meta-model (2022)
Presentation / Conference
Mijic, A., Liu, L., O'Keeffe, J., Dobson, B., & Chun, K. (2022, May). Solving water management paradoxes requires a systems meta-model. Presented at European Geosciences Union (EGU) General Assembly 2022, Vienna, Austria (and online)

Sustainable development is becoming increasingly urgent in the post-COVID recovery and climate crisis era. Despite this need, the water management scientific community is still deciding how to comprehensively represent and assess the role of humans w... Read More about Solving water management paradoxes requires a systems meta-model.