Identify and load additional maps

[teixeirak]

Maps that we have already identified as potentially interesting include the following:

• US biomass map from FIA (we have had trouble with this in the past): http://www.whrc.org/mapping/nbcd/
• Canada biomass map
• [ ](Baccini et al., 2012) tropical biomass map, available here: http://www.arcgis.com/home/item.html?id=2332b43bc5454127bfde21e894c89a51
• other regional biomass maps, if accessible
• model intercomparison maps (global- David mentioned these)
• Almut & Anita's global GHGV map or components thereof (modeled in LPJ, Evan reviewed this paper.)
• new map from Peter Snyder of biophysical values for pasture and maybe generic cropland, if he is able/willing to run those.

[dlebauer]

@ValentineHerr

Here is an example of how you can compute the average of a variable over time. For the CLM TotLivBiom.nc. Install NCO and do:

ncwa -O -C -a time -y avg CLM4_RG1_Monthly_TotLivBiom.nc4 CLM4_RG1_TotLivBiom.nc4  

[dlebauer]

@hmb1 I have a few questions:

1. Starting with a file of monthly values over 110 years (e.g. this 250MB file of NEE, how can we compute the annual sums and then compute the average over years (analagous to a 'climatology' variable like mean annual temperature)?

I've been trying to compute the annual sums like ncra -O -F -d time,1,1340,12 -y ttl in.nc out.nc but get

ncra: ERROR no variables fit criteria for processing
ncra Hint Extraction list must contain a record variable that is not NC_CHAR or NC_STRING

however the TotLivBiom variable is a float ...?

If I use ncwa -O -C -a time,1,1340,12 -y ttl in.nc out.nc it creates a file that sums over the record dimension rather than each 12 months.

2. Have you ever seen the error

$ ncwa -O -C -a time -y avg CLM4_RG1_Monthly_TotLivBiom.nc4 CLM4_RG1_TotLivBiom.nc4
ncwa: ERROR nco_malloc_flg() unable to allocate 1368576000 B = 1336500 kB = 1305 MB = 1 GB
ncwa: malloc() error is "Not enough space"
ncwa: ERROR Unable to malloc() 342144000*4 bytes for value buffer for variable TotLivBiom in main()

and is there a way to fix it (memory settings)?

[teixeirak]

This is now covered by #86. Closing this issue.