Mixed-Phase Arctic Cloud Experiment
(September 27 - October 22, 2004)
The major objective of the Mixed-Phase Arctic Cloud Experiment (M-PACE)
is to collect a focused set of observations needed advance our understanding
of the dynamical and processes in mixed-phase arctic clouds, including
cloud microphysical processes and radiative transfer through these clouds.
The M-PACE will consist of 4 surface based sites (the 2 DOE-ARM NSA
sites Barrow and Atqasuk supplemented by another remote sensing site at Oliktok
Point and a radiosonde site in the interior (see map).
The Oliktok Point site will be equipped with an ARM-like remote sensing facility,
supplemented by a tethered balloon equipped with basic met. Aircraft equipped
with the full complement of microphysical and radiation instruments will document
cloud properties between these four points.
The University of North Dakota Citation will be the in situ platform,
while the DOE-ARM UAV will serve as a high-flying remote sensing platform.
In addition to its standard set of microphysical measurement systems, the
Citation will be equipped with the NCAR CCN counter and the CSU IN counter,
while the UAV will have downward looking cloud radar, lidar and S-HIS in
addition to its complement of in situ microphysical measurement systems.
Operations Plan
Look at the ARM millimeter wave radar images for:
Overlaid on these images are the hourly
- Wind direction (*) multiplied by 10
- Wind speed (+) multiplied by 100
- Pressure (970 mb at 500m, 1050 at 4500m)
