trouble with opendap reading CMIP3 through the IRI Data Library

Hello everyone,

I am having trouble reading CMIP3 model output through the IRI Data Library, using opendap, but am at a total loss as to why.

This is the error message I get:

ncvarget: ncid 327680; varid 4: NetCDF: I/O failure
fatal:NetCdf: An error occurred while attempting to read variable (asum) from file (http://iridl.ldeo.columbia.edu/expert/SOURCES/.WCRP/.CMIP3/%28ipcc4/20c3m%29%40%40/%28ipcc4/20c3m/miroc3_2_medres%29%40%40/.pcmdi.ipcc4.miroc3_2_medres.20c3m.run2.atm.mo.xml/zg/9.8/mul/ta/1005.7/mul/add/hus/2501000/mul/add/plev/30000/10000/RANGEEDGES/plev/integralgrid/plev/differences//name//deltap/def%5Bplev%5Dweighted-average/time/1/monthlyAverage/time/%28Dec%201900%29%28Jan%201999%29RANGE/time/3/runningAverage/time/12/splitstreamgrid/time/%2Fmon/renameGRID/time2/%2FT/renameGRID/-999/setmissing_value/dods)

I am pretty sure the data is fine. If you go to the link:
<http://iridl.ldeo.columbia.edu/expert/SOURCES/.WCRP/.CMIP3/%28ipcc4/20c3m%29%40%40/%28ipcc4/20c3m/miroc3_2_medres%29%40%40/.pcmdi.ipcc4.miroc3_2_medres.20c3m.run2.atm.mo.xml/zg/9.8/mul/ta/1005.7/mul/add/hus/2501000/mul/add/plev/30000/10000/RANGEEDGES/plev/integralgrid/plev/differences//name//deltap/def%5Bplev%5Dweighted-average/time/1/monthlyAverage/time/%28Dec%201900%29%28Jan%201999%29RANGE/time/3/runningAverage/time/12/splitstreamgrid/time/%2Fmon/renameGRID/time2/%2FT/renameGRID/>
you can visualize the data by clicking any of the plot icons.

You will note that I am not simply reading data. Through the Data Library I can manipulate the data, and in this case I perform a vertical integral of moist static energy, i.e.
gz + cT +Lq, from 300 to 100 hPa.

I do not have an issue when I simply read precipitation in a similar way, from this url:
<http://iridl.ldeo.columbia.edu/expert/SOURCES/.WCRP/.CMIP3/%28ipcc4/20c3m%29%40%40/%28ipcc4/20c3m/gfdl_cm2_0%29%40%40/.pcmdi.ipcc4.gfdl_cm2_0.20c3m.run3.atm.mo.xml/.pr/time/1/monthlyAverage/time/%28Dec%201900%29%28Jan%201999%29RANGE/time/3/runningAverage/time/12/splitstreamgrid/time//mon/renameGRID/time2//T/renameGRID/>

All this is making me think that either the connection times out, or the memory is insufficient. But I can't get my hands around the cause, or solution for that matter...
I would appreciate it if anyone could interpret this line specifically:

ncvarget: ncid 327680; varid 4: NetCDF: I/O failure

thanks much, and happy new year!

best, alessandra

-- 
Alessandra Giannini
IRI for Climate and Society - The Earth Institute at Columbia University
P.O. Box 1000, Palisades NY 10964-8000
phone/fax: +1 845 680-4473/4864 - email: alesall@iri.columbia.edu

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Received on Fri Jan 03 13:10:23 2014