LDAS Meeting Minutes

 

July 25, Tuesday, NWS/Office of Hydrology

- Next LDAS meeting is scheduled on September 15, starting at 1:00pm in NCEP.

- Radihka: Princeton Update: Justin Shefield is the new LDAS coordinator in Princeton

A new Alpha computer is installed.

 

Brian: A new land/water mask was created which treats any pixel with a fraction of land as a land pixel. Many coastal pixels become land pixels from water pixels.

 

Action Item: Brian will get the new topography data for the new mask

 

All: Continuing discussion on how to fix the precipitation gradient in Canada. A weighting map for the impacted Candadian region is needed to blend CPC daily observed precipitation forcing with the EDAS precipitation forcing.

 

Action Item: Yun will develop a land mask file which identify US land as 1, Canada land as 2, other land as 3 and water as 0.

 

Ken: Ken explained the document he wrote on the requirement on common LDAS outputs (Version III). The comments would be incorporated by Ken.

 

Dag: Dag obtained the list of real-time streamflow stations. Will identify basins which have only natural flows and have enough raingage density for LDAS testing.

 

John: John presented precipitation analysis which incorporates PRISM climatology. Wayne agreed to produce precipitation forcing for LDAS at 1/8 degree resolution (instead of current 1/4 degree) using the new precipitation analysis method.

 

Update:

NCEP - Curtis Marshall was to leave NCEP to pursue his Ph.D. in Colorado State U.

OH - SAC-SMA coding for LDAS is close to being completed.