Yver, Camille, Graven Heather, University of
California San Diego, Lucas, Donald D., Cameron-Smith Philip, LLNL, Keeling
Ralph, and Weiss Ray, UCSD/SIO
This paper presents the
first step toward the development of a method to provide critical top-down
complement to the bottom-up inventories of halocarbons using high frequency
observations, forward simulations and inverse methods in California. The
Scripps Institution of Oceanography high-frequency halocarbons measurements are
located near the Californian coast and therefore the evaluation of the WRF
model transport at theses sites is crucial to the project. The performance of
the transport model has been investigated by comparing the wind direction, wind
speed and temperature at three locations along the coast and one inland using
ACARS aicraft reports. Different planetary boundary layer (PBL) schemes as well
as nesting options and different initializations have been tested.
All the PBL schemes
present similar results with no significant difference and a general good
agreement with observations, except in summer when the model sea breeze is too
strong. At the coarse 12km resolution, changing the initializations improves
the simulations when using ERA-interim. Adding nests also improve the match
with the observations. However, no further improvement is observed from
increasing the resolution from 4km to 0.8km.