Ageostrophic_Wind_Example.ipynb reports error

[julienchastang]

Even when I find a valid timestamp (invalid timestamp yields 404) I get an error in the second cell. For example: Server Error (500: java.lang.IllegalStateException: No records found in dataset gfsanl_4_20200508_0000_000.grb2)

(python-training) jovyan@jupyter-julienchastang:~$ conda list
# packages in environment at /opt/conda/envs/python-training:
#
# Name                    Version                   Build  Channel
_libgcc_mutex             0.1                 conda_forge    conda-forge
_openmp_mutex             4.5                       1_gnu    conda-forge
appdirs                   1.4.3                      py_1    conda-forge
argon2-cffi               20.1.0           py37h8f50634_1    conda-forge
async_generator           1.10                       py_0    conda-forge
attrs                     20.2.0             pyh9f0ad1d_0    conda-forge
backcall                  0.2.0              pyh9f0ad1d_0    conda-forge
backports                 1.0                        py_2    conda-forge
backports.functools_lru_cache 1.6.1                      py_0    conda-forge
beautifulsoup4            4.9.2                      py_0    conda-forge
bleach                    3.2.1              pyh9f0ad1d_0    conda-forge
boost-cpp                 1.74.0               h9359b55_0    conda-forge
boto3                     1.15.6             pyh9f0ad1d_0    conda-forge
botocore                  1.18.6             pyh9f0ad1d_0    conda-forge
brotlipy                  0.7.0           py37h8f50634_1000    conda-forge
bzip2                     1.0.8                h516909a_3    conda-forge
c-ares                    1.16.1               h516909a_3    conda-forge
ca-certificates           2020.6.20            hecda079_0    conda-forge
cairo                     1.16.0            h3fc0475_1005    conda-forge
cartopy                   0.18.0           py37h0f91b66_2    conda-forge
certifi                   2020.6.20        py37hc8dfbb8_0    conda-forge
cffi                      1.14.3           py37h2b28604_0    conda-forge
cfitsio                   3.470                hce51eda_6    conda-forge
cftime                    1.2.1            py37h03ebfcd_0    conda-forge
chardet                   3.0.4           py37hc8dfbb8_1007    conda-forge
cryptography              3.1.1            py37hb09aad4_0    conda-forge
curl                      7.71.1               he644dc0_6    conda-forge
cycler                    0.10.0                     py_2    conda-forge
dbus                      1.13.6               he372182_0    conda-forge
decorator                 4.4.2                      py_0    conda-forge
defusedxml                0.6.0                      py_0    conda-forge
entrypoints               0.3             py37hc8dfbb8_1001    conda-forge
expat                     2.2.9                he1b5a44_2    conda-forge
ffmpeg                    4.3.1                h167e202_0    conda-forge
fontconfig                2.13.1            h1056068_1002    conda-forge
freetype                  2.10.2               he06d7ca_0    conda-forge
freexl                    1.0.5             h516909a_1002    conda-forge
gdal                      3.1.2            py37h518339e_1    conda-forge
geos                      3.8.1                he1b5a44_0    conda-forge
geotiff                   1.6.0                ha04d9d0_1    conda-forge
gettext                   0.19.8.1          hc5be6a0_1002    conda-forge
giflib                    5.2.1                h516909a_2    conda-forge
glib                      2.66.0               h0dae87d_0    conda-forge
gmp                       6.2.0                he1b5a44_2    conda-forge
gnutls                    3.6.13               h79a8f9a_0    conda-forge
gst-plugins-base          1.14.5               h0935bb2_2    conda-forge
gstreamer                 1.14.5               h36ae1b5_2    conda-forge
hdf4                      4.2.13            hf30be14_1003    conda-forge
hdf5                      1.10.6          nompi_h3c11f04_101    conda-forge
icu                       67.1                 he1b5a44_0    conda-forge
idna                      2.10               pyh9f0ad1d_0    conda-forge
importlib-metadata        2.0.0            py37hc8dfbb8_0    conda-forge
importlib_metadata        2.0.0                         0    conda-forge
importlib_resources       3.0.0            py37hc8dfbb8_0    conda-forge
ipykernel                 5.3.4            py37h43977f1_0    conda-forge
ipython                   7.18.1           py37hc6149b9_0    conda-forge
ipython_genutils          0.2.0                      py_1    conda-forge
ipywidgets                7.5.1              pyh9f0ad1d_1    conda-forge
jedi                      0.17.2           py37hc8dfbb8_0    conda-forge
jinja2                    2.11.2             pyh9f0ad1d_0    conda-forge
jmespath                  0.10.0             pyh9f0ad1d_0    conda-forge
jpeg                      9d                   h516909a_0    conda-forge
json-c                    0.13.1            hbfbb72e_1002    conda-forge
json5                     0.9.5              pyh9f0ad1d_0    conda-forge
jsonschema                3.2.0            py37hc8dfbb8_1    conda-forge
jupyter                   1.0.0                      py_2    conda-forge
jupyter_client            6.1.7                      py_0    conda-forge
jupyter_console           6.2.0                      py_0    conda-forge
jupyter_core              4.6.3            py37hc8dfbb8_1    conda-forge
jupyterlab                2.2.8                      py_0    conda-forge
jupyterlab_pygments       0.1.1              pyh9f0ad1d_0    conda-forge
jupyterlab_server         1.2.0                      py_0    conda-forge
kealib                    1.4.13               h33137a7_1    conda-forge
kiwisolver                1.2.0            py37h99015e2_0    conda-forge
krb5                      1.17.1               hfafb76e_3    conda-forge
lame                      3.100             h14c3975_1001    conda-forge
lcms2                     2.11                 hbd6801e_0    conda-forge
ld_impl_linux-64          2.35                 h769bd43_9    conda-forge
libblas                   3.8.0               17_openblas    conda-forge
libcblas                  3.8.0               17_openblas    conda-forge
libclang                  10.0.1          default_hde54327_1    conda-forge
libcurl                   7.71.1               hcdd3856_6    conda-forge
libdap4                   3.20.6               h1d1bd15_1    conda-forge
libedit                   3.1.20191231         he28a2e2_2    conda-forge
libev                     4.33                 h516909a_1    conda-forge
libevent                  2.1.10               hcdb4288_2    conda-forge
libffi                    3.2.1             he1b5a44_1007    conda-forge
libgcc-ng                 9.3.0               h24d8f2e_16    conda-forge
libgdal                   3.1.2                hb2a6f5f_1    conda-forge
libgfortran-ng            7.5.0               hdf63c60_16    conda-forge
libgomp                   9.3.0               h24d8f2e_16    conda-forge
libiconv                  1.16                 h516909a_0    conda-forge
libkml                    1.3.0             h74f7ee3_1012    conda-forge
liblapack                 3.8.0               17_openblas    conda-forge
libllvm10                 10.0.1               he513fc3_3    conda-forge
libnetcdf                 4.7.4           nompi_h84807e1_105    conda-forge
libnghttp2                1.41.0               h8cfc5f6_2    conda-forge
libopenblas               0.3.10          pthreads_hb3c22a3_4    conda-forge
libpng                    1.6.37               hed695b0_2    conda-forge
libpq                     12.3                 h5513abc_0    conda-forge
libprotobuf               3.13.0               h8b12597_0    conda-forge
libsodium                 1.0.18               h516909a_1    conda-forge
libspatialite             4.3.0a            h57f1b35_1039    conda-forge
libssh2                   1.9.0                hab1572f_5    conda-forge
libstdcxx-ng              9.3.0               hdf63c60_16    conda-forge
libtiff                   4.1.0                hc7e4089_6    conda-forge
libuuid                   2.32.1            h14c3975_1000    conda-forge
libwebp-base              1.1.0                h516909a_3    conda-forge
libxcb                    1.13              h14c3975_1002    conda-forge
libxkbcommon              0.10.0               he1b5a44_0    conda-forge
libxml2                   2.9.10               h68273f3_2    conda-forge
lz4-c                     1.9.2                he1b5a44_3    conda-forge
markupsafe                1.1.1            py37h8f50634_1    conda-forge
matplotlib                3.3.2                         0    conda-forge
matplotlib-base           3.3.2            py37hd478181_0    conda-forge
metpy                     0.12.2                     py_0    conda-forge
mistune                   0.8.4           py37h8f50634_1001    conda-forge
mysql-common              8.0.21                        2    conda-forge
mysql-libs                8.0.21               hf3661c5_2    conda-forge
nbclient                  0.5.0                      py_0    conda-forge
nbconvert                 6.0.6            py37hc8dfbb8_0    conda-forge
nbformat                  5.0.7                      py_0    conda-forge
ncurses                   6.2                  he1b5a44_1    conda-forge
nest-asyncio              1.4.0                      py_1    conda-forge
netcdf4                   1.5.4           nompi_py37hcbfd489_102    conda-forge
nettle                    3.4.1             h1bed415_1002    conda-forge
notebook                  6.1.4            py37hc8dfbb8_0    conda-forge
nspr                      4.29                 he1b5a44_0    conda-forge
nss                       3.57                 he751ad9_0    conda-forge
numpy                     1.19.1           py37h7ea13bd_2    conda-forge
olefile                   0.46                       py_0    conda-forge
openh264                  2.1.1                h8b12597_0    conda-forge
openjpeg                  2.3.1                h981e76c_3    conda-forge
openssl                   1.1.1h               h516909a_0    conda-forge
owslib                    0.20.0                     py_0    conda-forge
packaging                 20.4               pyh9f0ad1d_0    conda-forge
pandas                    1.0.5            py37h0da4684_0    conda-forge
pandoc                    2.10.1               h516909a_0    conda-forge
pandocfilters             1.4.2                      py_1    conda-forge
parso                     0.7.1              pyh9f0ad1d_0    conda-forge
pcre                      8.44                 he1b5a44_0    conda-forge
pexpect                   4.8.0            py37hc8dfbb8_1    conda-forge
pickleshare               0.7.5           py37hc8dfbb8_1001    conda-forge
pillow                    7.2.0            py37h718be6c_1    conda-forge
pint                      0.16.1                     py_0    conda-forge
pip                       20.2.3                     py_0    conda-forge
pixman                    0.38.0            h516909a_1003    conda-forge
pooch                     1.2.0                      py_0    conda-forge
poppler                   0.89.0               h4190859_1    conda-forge
poppler-data              0.4.9                         1    conda-forge
postgresql                12.3                 h8573dbc_0    conda-forge
proj                      7.1.0                h966b41f_1    conda-forge
prometheus_client         0.8.0              pyh9f0ad1d_0    conda-forge
prompt-toolkit            3.0.7                      py_0    conda-forge
prompt_toolkit            3.0.7                         0    conda-forge
protobuf                  3.13.0           py37h3340039_0    conda-forge
pthread-stubs             0.4               h14c3975_1001    conda-forge
ptyprocess                0.6.0                   py_1001    conda-forge
pycparser                 2.20               pyh9f0ad1d_2    conda-forge
pyepsg                    0.4.0                      py_0    conda-forge
pygments                  2.7.1                      py_0    conda-forge
pyopenssl                 19.1.0                     py_1    conda-forge
pyparsing                 2.4.7              pyh9f0ad1d_0    conda-forge
pyproj                    2.6.1.post1      py37hb5dadc3_1    conda-forge
pyqt                      5.12.3           py37h8685d9f_3    conda-forge
pyqt5-sip                 4.19.18                  pypi_0    pypi
pyqtchart                 5.12                     pypi_0    pypi
pyqtwebengine             5.12.1                   pypi_0    pypi
pyrsistent                0.17.3           py37h8f50634_0    conda-forge
pyshp                     2.1.2              pyh9f0ad1d_0    conda-forge
pysocks                   1.7.1            py37hc8dfbb8_1    conda-forge
python                    3.7.8           h6f2ec95_1_cpython    conda-forge
python-awips              18.1.7             pyh9f0ad1d_1    conda-forge
python-dateutil           2.8.1                      py_0    conda-forge
python_abi                3.7                     1_cp37m    conda-forge
pytz                      2020.1             pyh9f0ad1d_0    conda-forge
pyyaml                    5.3.1            py37h8f50634_0    conda-forge
pyzmq                     19.0.2           py37hac76be4_0    conda-forge
qt                        5.12.9               h1f2b2cb_0    conda-forge
qtconsole                 4.7.7              pyh9f0ad1d_0    conda-forge
qtpy                      1.9.0                      py_0    conda-forge
readline                  8.0                  he28a2e2_2    conda-forge
requests                  2.24.0             pyh9f0ad1d_0    conda-forge
s3transfer                0.3.3            py37hc8dfbb8_1    conda-forge
scipy                     1.5.2            py37hb14ef9d_0    conda-forge
send2trash                1.5.0                      py_0    conda-forge
setuptools                49.6.0           py37hc8dfbb8_1    conda-forge
shapely                   1.7.1            py37hedb1597_0    conda-forge
siphon                    0.8.0           py37hc8dfbb8_1003    conda-forge
six                       1.15.0             pyh9f0ad1d_0    conda-forge
soupsieve                 2.0.1                      py_1    conda-forge
sqlite                    3.33.0               h4cf870e_0    conda-forge
tbb                       2020.2               hc9558a2_0    conda-forge
terminado                 0.9.1            py37hc8dfbb8_0    conda-forge
testpath                  0.4.4                      py_0    conda-forge
tiledb                    2.0.8                h3effe38_1    conda-forge
tk                        8.6.10               hed695b0_0    conda-forge
tornado                   6.0.4            py37h8f50634_1    conda-forge
traitlets                 5.0.4                      py_1    conda-forge
tzcode                    2020a                h516909a_0    conda-forge
urllib3                   1.25.10                    py_0    conda-forge
wcwidth                   0.2.5              pyh9f0ad1d_2    conda-forge
webencodings              0.5.1                      py_1    conda-forge
wheel                     0.35.1             pyh9f0ad1d_0    conda-forge
widgetsnbextension        3.5.1            py37hc8dfbb8_1    conda-forge
x264                      1!152.20180806       h14c3975_0    conda-forge
xarray                    0.16.1                     py_0    conda-forge
xerces-c                  3.2.3                hfe33f54_1    conda-forge
xorg-kbproto              1.0.7             h14c3975_1002    conda-forge
xorg-libice               1.0.10               h516909a_0    conda-forge
xorg-libsm                1.2.3             h84519dc_1000    conda-forge
xorg-libx11               1.6.12               h516909a_0    conda-forge
xorg-libxau               1.0.9                h14c3975_0    conda-forge
xorg-libxdmcp             1.1.3                h516909a_0    conda-forge
xorg-libxext              1.3.4                h516909a_0    conda-forge
xorg-libxrender           0.9.10            h516909a_1002    conda-forge
xorg-renderproto          0.11.1            h14c3975_1002    conda-forge
xorg-xextproto            7.3.0             h14c3975_1002    conda-forge
xorg-xproto               7.0.31            h14c3975_1007    conda-forge
xz                        5.2.5                h516909a_1    conda-forge
yaml                      0.2.5                h516909a_0    conda-forge
zeromq                    4.3.2                he1b5a44_3    conda-forge
zipp                      3.2.0                      py_0    conda-forge
zlib                      1.2.11            h516909a_1009    conda-forge
zstd                      1.4.5                h6597ccf_2    conda-forge

[kgoebber]

I've had a chance to look into this a little bit, I think this is a scenario of NCEI not performing well. I was able to get it to work briefly, but then it failed again. I don't think there is anything we can do, except change the data source.