Published March 21, 2025 | Version v1
Dataset Open

Monthly ocean bottom pressure anomalies from CMIP6 climate models

Authors/Creators

  • 1. Institute of Geodesy and Geoinformation, University of Bonn, Bonn, Germany

Description

Data supplement for manuscript Börger, L., Lentge, K. M., Schindelegger, M., & Dobslaw, H. (2025). ENSO modulates the oceanic excitation of polar motion. Geophysical Research Letters, 52, e2025GL118576. https://doi.org/10.1029/2025GL118576

 

Contents:

Monthly ocean bottom pressure anomalies (OBP), Oceanic Niño Index (ONI) series, and ENSO-related lagged regression fields over 1850-2014 obtained from four historical experiments of CMIP6: CMCC-ESM2 (Centro Euro-Mediterraneo sui Cambiamenti Climatici - Earth System Model version 2),  EC-Earth3, MIROC6 (Model for Interdisciplinary Research on Climate version 6), and MRI-ESM2 (Meteorological Research Institute - Earth System Model version 2).

OBP specifications:

  • Monthly files for each model and time period (e.g., OBP_CMCC_185001_201412.nc)
  • Spatial mean in each month and temporal mean at each point are reduced
  • Units: mm of equivalent water height
  • Data given with nominal grid spacing of 1°
  • Static atmospheric contribution to bottom pressure: excluded 

 

ENSO-related fields specifications:

  • Monthly files for each model and time period (e.g., ENSO_LaggedRegression_CMCC_47months.nc)
  • Considered Lags: -10 to 36 months around the El Niño peak
  • Spatial mean in each month and temporal mean at each point are reduced
  • Units: hPa/°C
  • Data given with nominal grid spacing of 1°

 

ONI specifications:

  • Monthly files for each model and time period (e.g., ONI_CMCC_185001_201412.nc)
  • Units: °C

 

Contact: L. Börger (lboerger@igg.uni-bonn.de)

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Additional details

Funding

Deutsche Forschungsgemeinschaft
Disentangling Climatic Signals in Earth Orientation Parameters 459392861