21 questions
2
votes
1
answer
69
views
Siphon - Cannot download data with all requested variables
I am trying to download weather forecast data using the Siphon library (example below). When I specify multiple variables to download, it downloads just some of them (print at the end shows just two ...
- 1,554
0
votes
1
answer
48
views
remote_access(use_xarray=True) outputs TypeError
I am trying to access data in THREDDS using siphon using following code.
satcat = TDSCatalog(
"https://thredds.ucar.edu/thredds/catalog/satellite/goes/east/products/CloudAndMoistureImagery/CONUS/...
- 5,018
0
votes
1
answer
127
views
Downloading from THREDDS Data Server fails when running in parallel, but works when running in series
I am attempting to download/subset a list of gridded parameters from the UCAR THREDDS servers.
Here is how I am setting things up:
import pandas as pd
import xarray as xr
import concurrent.futures
...
- 1,533
1
vote
1
answer
150
views
Accessing HYCOM Hindcasts using Siphon: OPENDAP is not available for this dataset
I've got a working example of using Siphon to access the HYCOM forecast model run catalog (FMRC), and I really like this pattern! My problem is that I cannot access the hindcast catalog in the same ...
- 160
0
votes
2
answers
669
views
How to using for loop to download GFS url data using Siphon
I'm trying to loop to download a subset of GFS data using the siphon library. I can download one file at a time normally the way the code is laid out. I would like to know how can I download from the ...
1
vote
1
answer
97
views
How to store a dataset retrieved with Siphon and the ncss service
I use the Siphon library to retrieve a subset (using the ncss service) of a remote NetCDF dataset. Is there a convenient way of storing the result in a local .nc file or do I have to create a new ...
- 393
0
votes
1
answer
50
views
Exception thrown with simple Siphon ACIS Request
I'm using the following code in Google Colab with siphon 0.9:
from siphon.simplewebservice import acis
import json
params = {"sid":"KPIH","elems":"maxt,mint,avgt,...
- 11
0
votes
1
answer
189
views
Why extracting NEXRAD Level 3 products using the siphon package returns empty?
I am using the siphon package to extract NEXRAD Level 3 data following the example in this link: https://unidata.github.io/siphon/latest/examples/Radar_Server_Level_3.html. But it appears that the ...
- 3
0
votes
1
answer
161
views
siphon error - 400: NETCDF4 format not supported for ANY_POINT feature typ
I'm trying to get a dataset from TDScatalog with siphon but with multiples variables show me that error or the last line. Here the code:
import siphon
from siphon.catalog import TDSCatalog
import ...
2
votes
1
answer
262
views
How to get BUFR Soundings using Siphon from the University of Wyoming?
By using the codes below, I can succesfully get “TEMP Soundings” data from the University of Wyoming. (The website is http://weather.uwyo.edu/upperair/sounding.html)
import datetime
from siphon....
- 21
0
votes
2
answers
169
views
Sorting a TDSCatalog List for Loops and Animations
I'm working on making animated radar loops using siphon and I am seeing that siphon isn't extracting the data in time/file order. (Example below).
from siphon.cdmr import Dataset
from siphon....
1
vote
1
answer
546
views
Sea Surface Temperature NetCDF4 Input z must be 2D, not 3D
I am trying to plot recent sea surface temperature data on a map. I got it working when I downloaded the netCDF4 file, but when I try to access the file from https://www.ncei.noaa.gov/thredds/, I get ...
1
vote
2
answers
2k
views
read in authorized opendap url using xarray
I would like to open a opendap url using xarray. It requires authorization as it held at UCAR RDA:
https://rda.ucar.edu/datasets/ds084.1/#!description
The url for one file is as follows 'https://rda....
- 1,638
0
votes
1
answer
155
views
850hPa temp Advection Example Not Working
I am new to plotting and examining wx data using python. I started with this example 850 hPa temp advection and its failing at this statement.
ncss = NCSS('{}{dt:%Y%m}/{dt:%Y%m%d}/gfsanl_4_{dt:%Y%m%d}...
- 2,492
2
votes
1
answer
75
views
Best practice for obscuring auth credentials for session manager?
On this example:
https://unidata.github.io/siphon/latest/examples/Basic_Usage.html
Is there a best practice for obscuring the username/password information for the session manager? I am using a ...
