Articles | Volume 15, issue 17
Development and technical paper
08 Sep 2022
Development and technical paper |  | 08 Sep 2022

Further improvement and evaluation of nudging in the E3SM Atmosphere Model version 1 (EAMv1): simulations of the mean climate, weather events, and anthropogenic aerosol effects

Shixuan Zhang, Kai Zhang, Hui Wan, and Jian Sun

Data sets

Data used by figures in the manuscript Shixuan Zhang and Kai Zhang

Balloon-Borne Sounding System (SONDEWNPN). December 2009–-January 2011: Southern Great Plains (SGP) Central Facility (C1), North Slope Alaska (NSA) Central Facility (C1), Tropical Western Pacific (TWP) Central Facility (C1, C2, C3) Atmospheric Radiation Measurement (ARM) user facility

Integrated Multi-satellitE Retrievals for GPM (IMERG) G. Huffman, D. Bolvin, D. Braithwaite, K. Hsu, R. Joyce, and P. Xie

NOAA Climate Data Record (CDR) of Daily Outgoing Longwave Radiation (OLR) Hai-Tien Lee and NOAA CDR Program

NOAA Interpolated Outgoing Longwave Radiation (OLR) NOAA PSL https://psl.noaa. gov/data/gridded/data.olrcdr.interp.html

NOAA Climate Data Record (CDR) of Precipitation Estimation from Remotely Sensed Information using Artificial Neural Networks (PERSIANN-CDR) Soroosh Sorooshian, Kuolin Hsu, Dan Braithwaite, Hamed Ashouri, and NOAA CDR Program

Model code and software

EAM source codes and scripts for nudging experiments E3SM developers, Shixuan Zhang, Kai Zhang, and Jian Sun

Short summary
This study investigates the nudging implementation in the EAMv1 model. We find that (1) revising the sequence of calculations and using higher-frequency constraining data to improve the performance of a simulation nudged to EAMv1’s own meteorology, (2) using the relocated nudging tendency and 3-hourly ERA5 reanalysis to obtain a better agreement between nudged simulations and observations, and (3) using wind-only nudging are recommended for the estimates of global mean aerosol effects.