Modeling, Analysis, Predictions and Projections (MAPP)

Researchers have for years been working to tackle the subseasonal to seasonal (S2S) prediction problem to improve forecasts. The Subseasonal Experiment, SubX, is an interagency research-to-operations project designed to help tackle this problem. The results of the project were recently published in BAMS. 

A research team funded in part by CPO's MAPP and CVP Programs investigate the effect of global warming on the MJO. 

During the winter of 2014 and 2015, the US west coast (USWC) experienced record high temperatures extending from Baja California to the Gulf of Alaska. This record warming, as high as 3°C in some areas, greatly impacted the California Current System (CCS) and Gulf of Alaska marine ecosystems. However, tropical Pacific sea surface temperature anomalies were weak during 2014, calling into question their role in the USWC warming period.

A new review paper describes how MAPP-funded and organized work has contributed to recent progress in understanding tropical cyclones.

The MAPP-funded study finds that ENSO, PDO, and other sources of abnormal sea surface temperatures serve as predictors for U.S. seasonal mean precipitation and that these sources change seasonally and decadally.