Meeting Minutes for January 24th, 2000 LDAS Meeting at OH
1. Next meeting is scheduled for Feb. 25, at Princeton University. The meeting will be in the afternoon around 1:30 pm. Eric will post further information on
how to get there.
2. General update by each group:
Princeton - Eric Wood
VIC is currently running at NCEP.
One of his student has pulled all Oklahoma mesonet data and put into GIS
NCEP - Curtis Marshall
Curtis will write a post-processing subroutine to translate all outputs into GRIB format. All LSMs need to output a common set of variables. Other variables
unique to each LSM would be processed by individual groups using Curtis' program.
NASA - Paul Houser
His group is setting up a new driver, which is expected to be working by next meeting.
Bought a new computer. There are some complications in terms of byte swapping for binary numbers.
OH - John Schaake
Coding of SAC model in LDAS framework is being done and should be ready by 04/00.
Two abstracts on LDAS were submitted to European Geophysics Society Annual Meeting in Nice, France, April 2000. John and Eric will give these talks.
Rutgers - Alan Robock has obtained some sample soil data from Karen Humes for idealized soils
John Schaake
PRISM update - He met with Wayne Higgins on using PRISM to correct current LDAS precipitation forcing. The new forcing should be available by June.
Soil properties - he showed the analysis of the pedon data from Walter Rawls (>2400 samples). The main message is that the variability within a soil class is
probably larger than variability between classes. It is a very difficult task to estimate "effective" using nominal soil properties.
Ken Mitchell
The forcing data for about two days around November 18, 1999 were erroneous. The reason was that a fire accident in the computer facility limited the
execution of mesoscale Eta model. Forecast temp at 2m was biased by ± 4 C, depending on regions. Day-to-day bias is about ± 2 C.
Comparison of EDAS vs GOES solar radiation data - GOES solar radiation has some inordinate low numbers in some spots. This problem should be
discussed with Dan Tarpley and Rachel Pinker. Perhaps future meeting should address this problem. For now the EDAS solar radiation should be used.
Dag Lohmann showed the location of basins given to him by OH. OH will give him streamflow data and daily precipitation data for some validation basins.
Curtis Marshall asked whether to reproduce the old forcing to incorporate recent software upgrades. Action - wait six months. Paul Houser's group may be able
to do it.
Alan Robock
Some soil samples at different location were shown, each representing difference characteristics in terms of how soils were wetted and dried. He will show
some more example at the next meeting
