<div dir="ltr"><div>Hello all!<br>
<br>
I'm a graduate student working with ERA-Interim data and new to grads. I have
been downloading data from ECMWF (<a href="http://apps.ecmwf.int/datasets/data/interim_full_daily/?levtype=pl" target="_blank">http://apps.ecmwf.int/datasets/data/interim_full_daily/?levtype=pl</a>)
in GRIB format, and using grib2ctl to obtain a ctl file. After that, I run
gribmap<span style> </span>-i<span style> </span><filename>.ctl to obtain an index file.<br>
<br>
This has all worked out well as far as getting grads to read the file, but the
data seems distorted. I have so far downloaded the global 2008 monthly (parameters:
specific humidity, U and V components of wind, and geopotential) data with
approximately 120 time values, and the data for the first 3/4 of the month
looks fine. The last 1/4 or so of the month, however, seems incorrect. This is
the case no matter what variable I choose to display. My calculations (just
some simple uses of the vint () function), likewise come out useless at these
points. The calculations give me extremely large values for latter half of the
month and instead of ring like contours, I get zebra stripes on the display
window.<br>
<br>
Does anyone know if this is an issue with grads, the GRIB file, the ctl file,
the idx file, the source of the data, or some other thing I am unaware of? <br>
<br>
Thanks for your help in advance!<br><br></div>Kritika Thapa<br></div>