The challenge is to better determine:
1)how the climate system is changing
2)how the forcings are changing
3)how these relate to each other (incl.
feedbacks)
4)attribution of
anomalies to causes
5)what they mean for the immediate and more
distant future (assessment)
6)Validate and improve models
7)seamless predictions on multiple time scales
8)how to use this information for informed
planning and decision making
9)how to manage the data and reanalyze it
routinely
10)how to disseminate products around
the world
11)how to interact with users and
stakeholders and add regional value
12)
From Trenberth
et al 2002