Setup recipe

recipes/us-ssebop/meta.yaml

@@ -2,7 +2,7 @@ title: 'US SSEBop Evapotranspiration'
 description: >
   Actual Evapotranspiration (ETa) produced using MODIS and the operational Simplified Surface Energy Balance (SSEBop) model
   for the period 2000 to 2022 at 1-kilometer (km) spatial resolution for the contiguous United States.
-pangeo_forge_version: '0.9.4'
+pangeo_forge_version: '0.10.3'
 pangeo_notebook_version: '2022.07.13'
 recipes:
   - id: us-ssebop

recipes/us-ssebop/recipe.py

@@ -0,0 +1,65 @@
+import apache_beam as beam
+import pandas as pd
+
+from datetime import date
+
+from pangeo_forge_recipes.patterns import ConcatDim, FilePattern
+
+from pangeo_forge_recipes.transforms import (
+    Indexed,
+    OpenURLWithFSSpec,
+    StoreToZarr,
+    T,
+)
+
+
+input_url_pattern = (
+    'https://edcintl.cr.usgs.gov/downloads/sciweb1/shared/uswem/web/'
+    'conus/eta/modis_eta/daily/downloads/'
+    'det{yyyyjjj}.modisSSEBopETactual.zip'
+)
+
+start = date(2001, 1, 1)
+end = date(2022, 10, 7)
+dates = pd.date_range(start, end, freq='1D')
+
+
+def make_url(time: pd.Timestamp) -> str:
+    return input_url_pattern.format(yyyyjjj=time.strftime("%Y%j"))
+
+
+pattern = FilePattern(make_url, ConcatDim(name='time', keys=dates, nitems_per_file=1))
+
+
+class Preprocess(beam.PTransform):
+    """Preprocessor transform."""
+
+    @staticmethod
+    def _preproc(item: Indexed[T]) -> Indexed[T]:
+        import numpy as np
+        import rioxarray
+
+        index, f = item
+        time = dates[index]
+
+        da = rioxarray.open_rasterio(f.open()).drop('band')
+        da = da.rename({'x': 'lon', 'y': 'lat'})
+        ds = da.to_dataset(name='aet')
+        ds = ds.expand_dims(time=np.array([time]))
+
+        return index, ds
+
+    def expand(self, pcoll: beam.PCollection) -> beam.PCollection:
+        return pcoll | beam.Map(self._preproc)
+
+
+recipe = (
+    beam.Create(pattern.items())
+    | OpenURLWithFSSpec(max_concurrency=10, open_kwargs={'compression': 'zip'})
+    | Preprocess()
+    | StoreToZarr(
+        store_name="us-ssebop.zarr",
+        combine_dims=pattern.combine_dim_keys,
+        target_chunks={"time": 1, "lat": int(2834 / 2), "lon": int(6612 / 6)},
+    )
+)

recipes/us-ssebop/requirements.txt

@@ -0,0 +1 @@
+rioxarray