This dataset contains the Community Atmosphere Model version 5 (CAM5) numerical simulation outputs used to investigate Delayed influence of ENSO on North Atlantic Oscillation.

This dataset contains the Community Atmosphere Model version 5 (CAM5) numerical simulation outputs used to investigate Delayed influence of ENSO on North Atlantic Oscillation.

Data Format: NetCDF-4 (.nc)

Temporal Resolution: Monthly mean

Spatial Resolution: 1.9x2.5 degree with 30 vertical levels

Experimental Design:

The dataset includes four distinct sensitivity experiments designed using CAM5, which are forced with different sea surface temperature (SST) in the tropical Pacific. Each experiment includes 34 ensemble members, and each member was integrated continuously for 102 years.

1. Ctrl (Control Run): Baseline simulation forced with climatological SST.

2. EN with LN: Sensitivity run simulating El Niño events that successfully transition into La Niña events in the subsequent year.

3. EN without LN: Sensitivity run simulating El Niño events that do not transition into La Niña events in the subsequent year.

4. EN-Neu: Sensitivity run simulating El Niño events followed by a neutral ENSO phase in the subsequent year.

File Naming Convention & Structure:

The dataset is organized primarily by experiment type and simulation time. Files are named according to the following convention:

[Experiment_Abbreviation].cam.h0.0019_01-0120_12.nc

l  [Experiment_Abbreviation]: ENLN (EN with LN), ENnoLN (EN without LN), EN_Neu(EN-Neu), Control (Ctrl).

l  0019_01-0120_12: Indicates that the file contains the continuous monthly time series from January of Year 19 to December of Year 120 (102 years total).

This dataset is generated for and analyzed in the following paper:

Meng & Zhang. (2026). Delayed influence of ENSO on North Atlantic Oscillation,  Geophysical Research Letters.