ASKO PAR notes
Ankur,

The data in the file is in millivolts, to convert it to micromoles per m^2 per sec, use the following formula:
        if site='mhw' then do; v45=((v45/8.311)*199.20*1000)/(0.604*1000); end;
        if site='mrp' then do; v45=((v45/8.311)*158.93*1000)/(0.604*1000); end;
        if site='ihw' then do; v45=((v45/8.311)*199.20*1000)/(0.604*1000); end;
        if site='irp' then do; v45=((v45/8.311)*203.51*1000)/(0.604*1000); end;
        if site='pb' then do;  v45=((v45/8.311)*207.47*1000)/(0.604*1000); end;

To fill in gaps I use the met station that we have at the UW Ag Res Stn in Ashland.
The screening commands are as follows:
        if agPAR<0 or agPAR>3000 then agPARbad=1; if 0 le agPAR<3000 then agPARbad=0;
        if v45<0 or v45>3000 then v45bad=1; if 0 le v45<3000 then v45bad=0;
        if (v45=. or v45bad=1) and agPARbad=1 then PAR=.;
        if v45 ne . and v45bad=0 then PAR=v45;
        if (v45=. or v45bad=1) and agPARbad=0 then PAR=agPAR;

where v45 is PAR variable at each individual tower and agPAR is PAR at the Ag Stn.
I have attached the Ag Stn data file. The complete list of variables in this file is:

program code
year
day
hour
agts1
agts2
agts3
agta
agrh
agM
agPAR
agU
agP
agsnow
agM0


> P.S. I am using the fluxes from the file IHW_data2003.r1w.xls file (rotation 1 with WPL) - column 8 CO2 flux - is this right?  What happened to LI800_WPL storage flux - you had it for 2002 - do you have storage fluxes for 2003?


Yes, you are right. 'Rotation 1" is the file to use and column 8 is CO2 flux.
We have storage data for MHW and MRP and later in 2003 for IHW. The data is in a separate file.
I attached the time series of storage to this e-mail. However, I have not completely screened it.
The variables and units are as follows:
site
DOY
hour
co2  - co2 concentration, ppm
d_800 - change in co2 concentration over 30-minute period, ppm
d_800ugm - storage flux, micrograms of CO2 per m^3 of air
d_800vol - storage flux, micrograms of CO2 per m^2 of ground


Let me know if it makes sense.
Asko