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Korea Polar Data Center Scientific observations and results from Antarctica shall
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SSW-Type Composite 1000 hPa Temperature Anomalies over North America (1957–2013)

This dataset was generated for Choi et al. (2021) using NCEP/NCAR reanalysis 1000 hPa temperature data (Kalnay et al., 1996) from 1 July 1957 to 30 June 2013. It provides composite mean values of the 3-day running-mean 1000 hPa temperature anomaly, averaged over North America (80-120W, 40-55N) for each SSW type (DD, DS, SS). The dataset includes 61 daily values from day –30 to day +30 relative to the SSW onset date. Anomalies are defined relative to the 1981–2010 climatology. SSW types follow the classification of Choi et al. (2019), and the associated dataset is available in KPDC (KOPRI-KPDC-00003036). Reference Choi, H., Kim, B. M., & Choi, W. (2019). Type classification of sudden stratospheric warming based on pre-and postwarming periods. Journal of climate, 32(8), 2349-2367. Choi, H., Kim, J. H., Kim, B. M., & Kim, S. J. (2021). Observational evidence of distinguishable weather patterns for three types of sudden stratospheric warming during northern winter. Frontiers in Earth Science, 9, 625868. Kalnay, E., Kanamitsu, M., Kistler, R., Collins, W., Deaven, D., Gandin, L., ... & Joseph, D. (2018). The NCEP/NCAR 40-year reanalysis project. In Renewable energy (pp. Vol1_146-Vol1_194). Routledge.

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Entry ID

KOPRI-KPDC-00003051

DOI: https://dx.doi.org/doi:10.22663/KOPRI-KPDC-00003051

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Science Keyword

EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > SURFACE TEMPERATURE

ISO Topic: Climatology/Meteorology/Atmosphere

Related URL: Northern Hemisphere Sudden Stratospheric Warming (SSW) Onset Dates by Event Type (NCEP–NCAR, 1957–2014)

Personnel

HyeSun Choi (hschoi@kopri.re.kr)
Seong-Joong Kim (seongjkim@kopri.re.kr)
Joo-Hong Kim (joo-hong.kim@kopri.re.kr)
Baek-Min Kim (baekmin@pknu.ac.kr) , Pukyong National University

Project

PE21010, Earth System Model-based Korea Polar Prediction System (KPOPS-Earth) Development and Its Application to the High-impact Weather Events originated from the Changing Arctic Ocean and Sea Ice. PI.Joo-Hong Kim

Research period: 1957-07-01 ~ 2013-06-30

Create/Update Date: 2025-12-12 / 2025-12-12

Location: CONTINENT > NORTH AMERICA

Citation: The data(KOPRI-KPDC-00003051) used in this work was provided by the Korea Polar Research Institute.

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POLYGON

lat:40.000000, lon:-80.000000
lat:55.000000, lon:-120.000000

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Raw Data: File Size 2.3 Kb for 3 items

Category	File Name	Description	Size	Status
Result	kpdc.NH_SSW_DD_NCEP-NCAR_T1000anom-3day_NA_Composite_1957-2013.csv		763 Bytes	Request required
Result	kpdc.NH_SSW_DS_NCEP-NCAR_T1000anom-3day_NA_Composite_1957-2013.csv		768 Bytes	Request required
Result	kpdc.NH_SSW_SS_NCEP-NCAR_T1000anom-3day_NA_Composite_1957-2013.csv		773 Bytes	Request required

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This dataset was generated for Choi et al. (2021) using NCEP/NCAR reanalysis 1000 hPa temperature data (Kalnay et al., 1996) from 1 July 1957 to 30 June 2013. It provides composite mean values of the 3-day running-mean 1000 hPa temperature anomaly, averaged over North America (80-120W, 40-55N) for each SSW type (DD, DS, SS).

The dataset includes 61 daily values from day –30 to day +30 relative to the SSW onset date. Anomalies are defined relative to the 1981–2010 climatology. SSW types follow the classification of Choi et al. (2019), and the associated dataset is available in KPDC (KOPRI-KPDC-00003036).

Reference
Choi, H., Kim, B. M., & Choi, W. (2019). Type classification of sudden stratospheric warming based on pre-and postwarming periods. Journal of climate, 32(8), 2349-2367.
Choi, H., Kim, J. H., Kim, B. M., & Kim, S. J. (2021). Observational evidence of distinguishable weather patterns for three types of sudden stratospheric warming during northern winter. Frontiers in Earth Science, 9, 625868.
Kalnay, E., Kanamitsu, M., Kistler, R., Collins, W., Deaven, D., Gandin, L., ... & Joseph, D. (2018). The NCEP/NCAR 40-year reanalysis project. In Renewable energy (pp. Vol1_146-Vol1_194). Routledge.

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