Preprints
https://doi.org/10.5194/egusphere-2024-839
https://doi.org/10.5194/egusphere-2024-839
30 Apr 2024
 | 30 Apr 2024

Atmospheric River Induced Precipitation in California as Simulated by the Regionally Refined Simple Convection Resolving E3SM Atmosphere Model (SCREAM) Version 0

Peter Bogenschutz, Jishi Zhang, Qi Tang, and Philip Cameron-Smith

Abstract. Using the Regionally Refined Mesh (RRM) configuration of the U.S. Department of Energy's Simple Cloud Resolving E3SM Atmosphere Model (SCREAM), we simulate and evaluate four meteorologically distinct atmospheric river events over California. We test five different RRM configurations, each differing in terms of the areal extent of the refined mesh and the resolution (ranging from 800 m to 3.25 km). We find that SCREAM-RRM generally has a good representation of the AR generated precipitation in CA, even for the control simulation which has a very small 3 km refined patch, and is able to capture the fine scale regional distributions that are controlled largely by the fine scale topography of the state. Although, it is found that SCREAM generally has a wet bias over topography, most prominently over the Sierra Nevada mountain range, with a corresponding dry bias on the lee side. We find that refining the resolution beyond 3 km (specifically 1.6 km and 800 m) has virtually no benefit towards reducing systematic precipitation biases, but that improvements can be found when increasing the areal extent of the upstream refined mesh. However, these improvements are relatively modest and only realized if the size of the refined mesh is expanded to the scale where employing RRM no longer achieves the substantial cost benefit it was intended for.

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Journal article(s) based on this preprint

19 Sep 2024
Atmospheric-river-induced precipitation in California as simulated by the regionally refined Simple Convective Resolving E3SM Atmosphere Model (SCREAM) Version 0
Peter A. Bogenschutz, Jishi Zhang, Qi Tang, and Philip Cameron-Smith
Geosci. Model Dev., 17, 7029–7050, https://doi.org/10.5194/gmd-17-7029-2024,https://doi.org/10.5194/gmd-17-7029-2024, 2024
Short summary
Peter Bogenschutz, Jishi Zhang, Qi Tang, and Philip Cameron-Smith

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2024-839', Anonymous Referee #1, 18 May 2024
    • AC1: 'Reply on RC1', Peter Bogenschutz, 31 Jul 2024
  • CC1: 'Referee comments on Bogenschutz et al. "Atmospheric River Induced Precipitation in California as Simulated by the Regionally Refined Simple Convective Resolving E3SM Atmosphere Model (SCREAM) Version 0"', James Benedict, 17 Jun 2024
    • AC3: 'Reply on CC1', Peter Bogenschutz, 31 Jul 2024
  • RC2: 'Comment on egusphere-2024-839', James Benedict, 18 Jun 2024
    • AC2: 'Reply on RC2', Peter Bogenschutz, 31 Jul 2024

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2024-839', Anonymous Referee #1, 18 May 2024
    • AC1: 'Reply on RC1', Peter Bogenschutz, 31 Jul 2024
  • CC1: 'Referee comments on Bogenschutz et al. "Atmospheric River Induced Precipitation in California as Simulated by the Regionally Refined Simple Convective Resolving E3SM Atmosphere Model (SCREAM) Version 0"', James Benedict, 17 Jun 2024
    • AC3: 'Reply on CC1', Peter Bogenschutz, 31 Jul 2024
  • RC2: 'Comment on egusphere-2024-839', James Benedict, 18 Jun 2024
    • AC2: 'Reply on RC2', Peter Bogenschutz, 31 Jul 2024

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
AR by Peter Bogenschutz on behalf of the Authors (31 Jul 2024)  Author's response   Author's tracked changes   Manuscript 
ED: Publish as is (08 Aug 2024) by Axel Lauer
AR by Peter Bogenschutz on behalf of the Authors (08 Aug 2024)

Journal article(s) based on this preprint

19 Sep 2024
Atmospheric-river-induced precipitation in California as simulated by the regionally refined Simple Convective Resolving E3SM Atmosphere Model (SCREAM) Version 0
Peter A. Bogenschutz, Jishi Zhang, Qi Tang, and Philip Cameron-Smith
Geosci. Model Dev., 17, 7029–7050, https://doi.org/10.5194/gmd-17-7029-2024,https://doi.org/10.5194/gmd-17-7029-2024, 2024
Short summary
Peter Bogenschutz, Jishi Zhang, Qi Tang, and Philip Cameron-Smith
Peter Bogenschutz, Jishi Zhang, Qi Tang, and Philip Cameron-Smith

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Latest update: 19 Sep 2024
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Short summary
Using a high-resolution and state-of-the-art modeling techniques we simulate five atmospheric river events for California to test the capability of representing precipitation for these events. We find that our model is able to capture the distribution of precipitation very well, but suffers from overestimating the precipitation amounts over high elevation. Increasing the resolution further has no impact on reducing this bias, while increasing the domain size does have modest impacts.