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KPDC, Korea Polar Data Center

Korea Polar Data Center Scientific observations and results from Antarctica shall
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Stratospheric Polar Vortex Weakening Onset Dates in the Northern Hemisphere (PCH anomaly-based methodology)

This dataset provides the onset dates of Northern Hemisphere Stratospheric Polar Vortex (SPV) weakening events, identified using the same polar cap height (PCH) anomaly–based methodology applied in Kim & Choi (2024) and originally introduced by Kwon et al. (2020) for the Southern Hemisphere. By adopting the event definition used in Kim & Choi (2024), this dataset ensures full methodological consistency with recent SPV weakening research and enables robust hemispheric comparison of SPV variability. Reference Kim, S. J., & Choi, H. (2024). Polar vortex weakening and its impact on surface temperature in recent decades. Polar Research, 43.

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Entry ID
  • KOPRI-KPDC-00003042
DOI
https://dx.doi.org/doi:10.22663/KOPRI-KPDC-00003042
Copyright
Science Keyword
ISO Topic
Climatology/Meteorology/Atmosphere
Platforms
ERA-Interim
Personnel
  • HyeSun Choi (hschoi@kopri.re.kr)
  • Seong-Joong Kim (seongjkim@kopri.re.kr)
Project
Research period
1979-01-01 ~ 2017-12-31
Create/Update Date
2025-12-09 / 2025-12-09
Location
GEOGRAPHIC REGION > ARCTIC
Citation
The data(KOPRI-KPDC-00003042) used in this work was provided by the Korea Polar Research Institute.
Spatial Coverage

POLYGON

  • lat:65.000000, lon:-180.000000
  • lat:90.000000, lon:180.000000

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Raw Data
File Size 375 Bytes for 1 item
Category File Name Description Size Status
Result kpdc_NH_SPV_weakening_onset_dates_ERAI_1979-2017_v1.csv This dataset provides onset dates of Northern Hemisphere stratospheric polar vortex (SPV) weakening events. The dataset was generated using ERA-Interim reanalysis geopotential height fields and follows the event identification framework applied in Kim & Choi (2024) and originally introduced in Kwon et al. (2020). The file is formatted as a simple table and includes, for each event, the Year, Month, Day, and the corresponding Day of Year (DOY). 375 Bytes Request required

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