Our research group recently published a new paper on the association between Chinese tea yields, monsoon dynamics, and other weather factors in the journal Climate.
The study found that a delayed monsoon retreat and increased daily precipitation during the monsoon period was negatively associated with tea yields.
You can read the full paper here: http://www.mdpi.com/2225-1154/4/2/20/html.
You can also read the Tufts press release here.
This work was supported by the National Science Foundation Couple Natural Human Systems program (NSF grant #BCS-1313775), Tufts Collaborates, Tufts University, and the Friedman Family Foundation.