Sub-seasonal to seasonal drivers of dry extreme rainfall events over Northeast Thailand

Abatan, Abayomi A.; Collins, Matthew; Babel, Mukand S.; Khadka, Dibesh; Silva, Yenushi K. De

doi:10.3389/fclim.2022.1031226

Cited by 4 publications

(3 citation statements)

References 63 publications

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“…(2016) and Abatan et al. (2023). However, such analysis is beyond the scope of the present study, but it is be a focus of our future studies.…”

Section: Resultsmentioning

confidence: 95%

“…This makes it difficult to isolate the atmospheric conditions which induce extremes over the region. Such analysis would require application of Self-Organizing Maps to first group areas that experience extreme events at the same time and analyze the atmospheric feature responsible for each group as done in Abiodun et al (2016) and Abatan et al (2023). However, such analysis is beyond the scope of the present study, but it is be a focus of our future studies.…”

Section: Table 2 Reference Data Applied In the Present Studymentioning

confidence: 99%

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Simulation of Temperature Extremes Over West Africa With MPAS

Tanimoune,

Smiatek,

Kunstmann

et al. 2023

JGR Atmospheres

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A large ensemble of 51 simulations with the Model for Prediction Across Scales (MPAS) has been applied to assess its ability to reproduce extreme temperatures and heat waves in the area of West Africa. With its global approach the model avoids transition errors influencing the performance of limited area climate models. The MPAS simulations were driven with sea surface temperature (SST) and sea ice extent as the only boundary condition. The results reveal moderate cold biases in the range from −0.6° to −0.9°C for the daily mean temperature and −1.2° to −2.0°C for the area mean of the daily maximum temperature. The bias in the number of tropical nights ranges from +3 to −10 days. An underestimation by up to 50% is also present regarding the number of summer days. The heat wave duration index is underestimated regionally by 10%–60%. MPAS simulations are generally closer to the reanalysis results than they are to the observational reference. The results from long term runs and from short term runs with selected SST years are similar. Shortcomings in the reproduction of the temperature and precipitation indices found in the present investigation indicate that the global MPAS approach does provide a fidelity similar to that of the regional climate models.

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“…(2016) and Abatan et al. (2023). However, such analysis is beyond the scope of the present study, but it is be a focus of our future studies.…”

Section: Resultsmentioning

confidence: 95%

Section: Table 2 Reference Data Applied In the Present Studymentioning

confidence: 99%

Simulation of Temperature Extremes Over West Africa With MPAS

Tanimoune,

Smiatek,

Kunstmann

et al. 2023

JGR Atmospheres

View full text Add to dashboard Cite

show abstract

“…Several studies have demostrated the use of SOM in grouping climate variables (e.g. Abiodun et al, 2020;Abatan et al, 2023). In this study, the SOM was used to classify the projected spatial patterns of four extreme rainfall indices, the rainfall total (RTOT), the number of wet days (WDAYS), the extreme rainfall threshold (R97.5p), and the rainfall frequency (R97.5pFREQ) at four GWLs into 12 groups (i.e., a 4 × 3 nodes).…”

Section: Testing the Robustness Of Projected Changes In Spatial Patternsmentioning

confidence: 99%

Projected changes in precipitation characteristics over the Drakensberg Mountain Range

Takong

Abiodun

2023

Intl Journal of Climatology

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This study examines the potential impacts of climate change on the characteristics of precipitation over the Drakensberg Mountain Range (DMR) at different global warming levels (GWLs: 1.5, 2.0, 2.5 and 3.0°C) under the Representative Concentration Pathway 8.5 (RCP8.5) scenario, using dynamical and statistical downscaled datasets. The dynamical datasets consist of 19 multi‐model simulations datasets from the Coordinated Regional Climate Downscaling Experiment (CORDEX), whereas the statistical downscaled datasets comprise 19 multi‐model simulations from the National Aeronautics and Space Administration (NASA) Earth Exchange (NEX) Global Daily Downscaled Projections (NEX‐GDDP, hereafter NEX). The capacity of the CORDEX and NEX datasets to represent past characteristics of extreme precipitation over the DMR was evaluated against eight observation datasets. The precipitation characteristics were represented by eight precipitation indices. Both CORDEX and NEX realistically capture the characteristics of extreme precipitation over the Drakensberg and, in most cases, their biases lie within the observation uncertainty. However, NEX performs better than CORDEX in reproducing most of the precipitation characteristics, except in simulating the threshold of extreme rainfall. The ensemble means of CORDEX and NEX agree on a future increase in the intensity of normal precipitation, in the frequency and intensity of extreme precipitation, as well as an increase in widespread extreme events, with a decrease in the number of precipitation days and continuous wet days. However, they disagree on the projected changes of annual precipitation, for which CORDEX projects an increase over most parts of the DMR, whereas NEX indicates a decrease. The self‐organizing‐map analysis, which reveals diversity in the projection patterns hidden in the ensemble means, shows the most probable combinations of projected changes in the annual precipitation and extreme precipitation events (in terms of intensity and frequency): (a) increase in both annual precipitation and extreme precipitation events; (b) decrease in both annual precipitation and extreme precipitation events; (c) decrease in annual precipitation but increase in extreme precipitation events. The results of this study can thus provide a basis for developing climate change adaptation and mitigating strategies over the DMR.

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Assessing the suitability of McKee et al. (1993) drought severity classification across India

Panigrahi,

Vidyarthi

2024

Nat Hazards

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Sub-seasonal to seasonal drivers of dry extreme rainfall events over Northeast Thailand

Cited by 4 publications

References 63 publications

Simulation of Temperature Extremes Over West Africa With MPAS

Simulation of Temperature Extremes Over West Africa With MPAS

Projected changes in precipitation characteristics over the Drakensberg Mountain Range

Assessing the suitability of McKee et al. (1993) drought severity classification across India

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