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Atmospheric River Tracking Method Intercomparison Project (ARTMIP): project goals and experimental design

TitleAtmospheric River Tracking Method Intercomparison Project (ARTMIP): project goals and experimental design
Publication TypeJournal Article
Year of Publication2018
AuthorsShields C.A, Rutz J.J, Leung L.Y, Ralph FM, Wehner M., Kawzenuk B., Lora J.M, McClenny E., Osborne T., Payne A.E, Ullrich P., Gershunov A, Goldenson N., Guan B., Qian Y, Ramos A.M, Sarangi C., Sellars S., Gorodetskaya I., Kashinath K., Kurlin V., Mahoney K., Muszynski G., Pierce R., Subramanian AC, Tome R., Waliser D., Walton D., Wick G., Wilson A., Lavers D.,, Collow A., Krishnan H., Magnusdottir G, Nguyen P.
JournalGeoscientific Model Development
Date Published2018/06
Type of ArticleArticle
ISBN Number1991-959X
Accession NumberWOS:000435636400004
Keywordscoupled climate model; future changes; Geology; heavy precipitation; horizontal resolution; project; reanalysis; simulations; system model; united-states; water-vapor signature; western north-america

The Atmospheric River Tracking Method Intercomparison Project (ARTMIP) is an international collaborative effort to understand and quantify the uncertainties in atmospheric river (AR) science based on detection algorithm alone. Currently, there are many AR identification and tracking algorithms in the literature with a wide range of techniques and conclusions. ARTMIP strives to provide the community with information on different methodologies and provide guidance on the most appropriate algorithm for a given science question or region of interest. All ARTMIP participants will implement their detection algorithms on a specified common dataset for a defined period of time. The project is divided into two phases: Tier 1 will utilize the Modern-Era Retrospective analysis for Research and Applications, version 2 (MERRA-2) reanalysis from January 1980 to June 2017 and will be used as a baseline for all subsequent comparisons. Participation in Tier 1 is required. Tier 2 will be optional and include sensitivity studies designed around specific science questions, such as reanalysis uncertainty and climate change. High-resolution reanalysis and/or model output will be used wherever possible. Proposed metrics include AR frequency, duration, intensity, and precipitation attributable to ARs. Here, we present the ARTMIP experimental design, timeline, project requirements, and a brief description of the variety of methodologies in the current literature. We also present results from our 1-month "proof-of-concept" trial run designed to illustrate the utility and feasibility of the ARTMIP project.

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