8000 Add retrieval function for NASA MERRA2 reanalysis data by AdamRJensen · Pull Request #1274 · pvlib/pvlib-python · GitHub
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Add retrieval function for NASA MERRA2 reanalysis data #1274

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Add retrieval function for NASA MERRA2 reanalysis data #1274

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bfd9da0
Add merra2 function to api.rst
AdamRJensen Aug 8, 2021
592563c
Add merra2 functions to iotools init file
AdamRJensen Aug 8, 2021
87a6e2b
get_merra2 function first commit
AdamRJensen Aug 8, 2021
286c384
Add xarray to requires yml files
AdamRJensen Aug 8, 2021
2a25d82
Add read_merra2 and variable_map
AdamRJensen Aug 8, 2021
28bd914
Add xarray, dask, and pydap optional dependencies
AdamRJensen Aug 20, 2021
94b6ee2
Update whatsnew
AdamRJensen Aug 20, 2021
398d666
Add test_merra2 and requires_merra2_credentials
AdamRJensen Aug 20, 2021
7bd3cbe
Add helper functions to pvlib.tools
AdamRJensen Aug 20, 2021
9149f37
Update pydap link in setup.py
AdamRJensen Aug 20, 2021
c05fdb4
Remove pydap from setup.py
AdamRJensen Aug 20, 2021
ab32ff5
Add cftime to requirements-pyXX.yml files
AdamRJensen Aug 20, 2021
a8e802f
Add test data files and test_merra2
AdamRJensen Aug 20, 2021
7622b44
Update docs and merra2 remote test
AdamRJensen Aug 23, 2021
eb99391
Add lxml to ci requirement files
AdamRJensen Aug 23, 2021
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Update pydap link in setup.py
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@AdamRJensen
AdamRJensen committed Aug 20, 2021
commit 9149f3770a773a109dd9589fc6a359f18bcb1c54
15 changes: 7 additions & 8 deletions pvlib/iotools/merra2.py
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Original file line number Diff line number Diff line change
@@ -1,7 +1,6 @@
"""Functions to read and retrieve MERRA2 reanalysis data from NASA.
.. codeauthor:: Adam R. Jensen<adam-r-j@hotmail.com>
"""
import os
import cftime
from pvlib.tools import (_extract_metadata_from_dataset,
_convert_C_to_K_in_dataset)
Expand Down Expand Up @@ -113,19 +112,19 @@ def get_merra2(latitude, longitude, start, end, dataset, variables, username,
start_float = cftime.date2num(start, units='days since 1-1-1 00:00:0.0')
end_float = cftime.date2num(end, units='days since 1-1-1 00:00:0.0')

#try:
# latitude = slice(latitude[0], latitude[1])
# longitude = slice(longitude[0], longitude[1])
# method = None
#except TypeError:
# method = 'nearest'
# try:
# latitude = slice(latitude[0], latitude[1])
# longitude = slice(longitude[0], longitude[1])
# method = None
# except TypeError:
# method = 'nearest'

# Setting decode_times=False results in a time saving of up to some minutes
ds = xr.open_dataset(store, decode_times=False).sel(
{'lat': latitude,
'lon': longitude,
'time': slice(start_float, end_float)},
)
)

variables = [v.lower() for v in variables] # Make all variables lower-case

Expand Down
3 changes: 2 additions & 1 deletion pvlib/tests/conftest.py
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Expand Up @@ -96,7 +96,8 @@ def assert_frame_equal(left, right, **kwargs):


try:
# Attempt to load NASA EarthData login credentials used for testing pvlib.iotools.get_merra2
# Attempt to load NASA EarthData login credentials used for testing
# pvlib.iotools.get_merra2
MERRA2_USERNAME = os.environ["MERRA2_USERNAME"]
MERRA2_PASSWORD = os.environ["MERRA2_PASSWORD"]
has_merra2_credentials = True
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2 changes: 1 addition & 1 deletion setup.py
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Expand Up @@ -55,7 +55,7 @@
'optional': ['cython', 'ephem', 'netcdf4', 'nrel-pysam', 'numba',
'pvfactors', 'siphon', 'statsmodels', 'tables',
'cftime >= 1.1.1', 'xarray', 'dask',
'git+https://github.com/pydap/pydap#egg=pydap'],
'pip install -e git+https://github.com/pydap/pydap#egg=pydap'],
'doc': ['ipython', 'matplotlib', 'sphinx == 3.1.2',
'sphinx_rtd_theme==0.5.0', 'sphinx-gallery', 'docutils == 0.15.2',
'pillow', 'netcdf4', 'siphon', 'tables',
Expand Down
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