diff --git a/podpac/core/data/types.py b/podpac/core/data/types.py
index 36d41583..23f7c663 100644
--- a/podpac/core/data/types.py
+++ b/podpac/core/data/types.py
@@ -83,6 +83,17 @@ class Array(DataSource):
         d = self.create_output_array(coordinates, data=self.source[s])
         return d
 
+class NumpyArray(Array):
+    """Create a DataSource from a numpy array.
+
+    .. deprecated:: 0.2.0
+          `NumpyArray` will be removed in podpac 0.2.0, it is replaced by `Array`.
+    """
+
+    def init(self):
+        warnings.warn('NumpyArray been renamed Array. ' +
+                      'Backwards compatibility will be removed in future releases', DeprecationWarning)
+
 
 @common_doc(COMMON_DATA_DOC)
 class PyDAP(DataSource):
diff --git a/podpac/core/node.py b/podpac/core/node.py
index 46eaef77..482a36ac 100644
--- a/podpac/core/node.py
+++ b/podpac/core/node.py
@@ -298,19 +298,16 @@ class Node(tl.HasTraits):
 
             attr = getattr(self, key)
 
+            # check serializable
+            try:
+                json.dumps(attr, cls=JSONEncoder)
+            except:
+                raise NodeException("Cannot serialize attr '%s' with type '%s'" % (key, type(attr)))
+            
             if isinstance(attr, Node):
                 lookup_attrs[key] = attr
-            elif isinstance(attr, np.ndarray):
-                attrs[key] = attr.tolist()
-            elif isinstance(attr, Coordinates):
-                attrs[key] = attr.definition
             else:
-                try:
-                    json.dumps(attr, cls=JSONEncoder)
-                except:
-                    raise NodeException("Cannot serialize attr '%s' with type '%s'" % (key, type(attr)))
-                else:
-                    attrs[key] = attr
+                attrs[key] = attr
 
         if attrs:
             d['attrs'] = OrderedDict([(key, attrs[key]) for key in sorted(attrs.keys())])
diff --git a/podpac/core/utils.py b/podpac/core/utils.py
index 2d274afb..e73db6c3 100644
--- a/podpac/core/utils.py
+++ b/podpac/core/utils.py
@@ -229,8 +229,16 @@ class ArrayTrait(tl.TraitType):
 
 class JSONEncoder(json.JSONEncoder):
     def default(self, obj):
+        # podpac Coordinates objects
+        if isinstance(obj, podpac.Coordinates):
+            return obj.definition
+
+        # podpac Coordinates objects
+        elif isinstance(obj, podpac.Node):
+            return obj.definition
+
         # numpy arrays
-        if isinstance(obj, np.ndarray):
+        elif isinstance(obj, np.ndarray):
             if np.issubdtype(obj.dtype, np.datetime64):
                 return obj.astype(str).tolist()
             elif np.issubdtype(obj.dtype, np.timedelta64):

Custom JSONEncoder for serialization
**Description**
Node and Coordinate objects need to be serializable.

**Describe the solution you'd like**
The Node and Coordinate classes contain a `definition` property and a `json` property that serializes this definition. We should use a custom JSONEncoder to handle unserializable objects and use it to implement the `json` property. The JSONEncoder needs to handle *at least*:

 * numpy array (numbers, datetime64, timedelta64)
 * np.datetime64 and np.timedelta64
 * Coordinates (for when they are a Node attribute)
 * Interpolator (for when they are a Node attribute)

**Sample Code**

The custom JSONEncoder is partially implemented in the podpac utils.

```
class JSONEncoder(json.JSONEncoder):
    def default(self, obj):
        # numpy arrays
        if isinstance(obj, np.ndarray):
            if np.issubdtype(obj.dtype, np.datetime64):
                return obj.astype(str).tolist()
            elif np.issubdtype(obj.dtype, np.timedelta64):
                f = np.vectorize(podpac.core.coordinates.utils.make_timedelta_string)
                return f(obj).tolist()
            elif np.issubdtype(obj.dtype, np.number):
                return obj.tolist()
        
        # datetime64
        elif isinstance(obj, np.datetime64):
            return obj.astype(str)

        # timedelta64
        elif isinstance(obj, np.timedelta64):
            return podpac.core.coordinates.utils.make_timedelta_string(obj)
        
        # default
        return json.JSONEncoder.default(self, obj)
```

The Coordinates are using this JSONEncoder.

```
    @property
    def json(self):
        return json.dumps(self.definition, cls=podpac.core.utils.JSONEncoder)
```

This means for example that ArrayCoordinates1d no longer have to convert numpy arrays to a list manually in their `definition` property.

**See Also**

#177 Interpolation attributes should be serializable
#135 Array data_source

diff --git a/podpac/core/data/test/test_types.py b/podpac/core/data/test/test_types.py
index b8c5cb57..b00c9112 100644
--- a/podpac/core/data/test/test_types.py
+++ b/podpac/core/data/test/test_types.py
@@ -644,9 +644,7 @@ class TestReprojectedSource(object):
 
         node = ReprojectedSource(source=self.source, reprojected_coordinates=self.reprojected_coordinates)
         d = node.base_definition
-        c = Coordinates.from_definition(d['attrs']['reprojected_coordinates'])
-        
-        assert c == self.reprojected_coordinates
+        assert d['attrs']['reprojected_coordinates'] == self.reprojected_coordinates
 
     def test_deserialize_reprojected_coordinates(self):
         node1 = ReprojectedSource(source=self.source, reprojected_coordinates=self.reprojected_coordinates)
diff --git a/podpac/core/test/test_node.py b/podpac/core/test/test_node.py
index 25c3d435..f91c1ac0 100644
--- a/podpac/core/test/test_node.py
+++ b/podpac/core/test/test_node.py
@@ -58,9 +58,7 @@ class TestNode(object):
 
         node = N(my_attr=podpac.Coordinates([[0, 1], [1, 2, 3]], dims=['lat', 'lon']))
         d = node.base_definition
-        my_attr = podpac.Coordinates.from_definition(d['attrs']['my_attr'])
-        
-        assert my_attr == node.my_attr
+        assert d['attrs']['my_attr'] == node.my_attr
 
     def test_base_definition_unserializable(self):
         class N(Node):

pip install -e .[devall]
parse_log_pytest
requirements.txt
pytest pytest-cov pytest-xdist pytest-mock pytest-asyncio pytest
apt-get update apt-get install -y gdal-bin libgdal-dev
3.6
requirements/base.txt
pytest --no-header -rA --tb=line --color=no -p no:cacheprovider -W ignore::DeprecationWarning
affine==2.3.1
alabaster==0.7.13
anyio==3.6.2
argon2-cffi==21.3.0
argon2-cffi-bindings==21.2.0
astroid==2.11.7
async-generator==1.10
attrs==22.2.0
awscli==1.24.10
Babel==2.11.0
backcall==0.2.0
beautifulsoup4==4.12.3
bleach==4.1.0
boto3==1.23.10
botocore==1.26.10
cached-property==1.5.2
certifi==2021.5.30
cffi==1.15.1
charset-normalizer==2.0.12
click==8.0.4
click-plugins==1.1.1
cligj==0.7.2
colorama==0.4.4
comm==0.1.4
commonmark==0.9.1
contextvars==2.4
coverage==6.2
coveralls==3.3.1
cycler==0.11.0
dataclasses==0.8
decorator==5.1.1
defusedxml==0.7.1
dill==0.3.4
docopt==0.6.2
docutils==0.16
entrypoints==0.4
execnet==1.9.0
h5py==3.1.0
idna==3.10
imagesize==1.4.1
immutables==0.19
importlib-metadata==4.8.3
importlib-resources==5.4.0
iniconfig==1.1.1
ipykernel==5.5.6
ipyleaflet==0.14.0
ipympl==0.8.8
ipython==7.16.3
ipython-genutils==0.2.0
ipywidgets==7.8.5
isort==5.10.1
jedi==0.17.2
Jinja2==3.0.3
jmespath==0.10.0
json5==0.9.16
jsonschema==3.2.0
jupyter-client==7.1.2
jupyter-core==4.9.2
jupyter-server==1.13.1
jupyterlab==3.2.9
jupyterlab-pygments==0.1.2
jupyterlab-server==2.10.3
jupyterlab_widgets==1.1.11
kiwisolver==1.3.1
lazy-import==0.2.2
lazy-object-proxy==1.7.1
livereload==2.6.3
lxml==5.3.1
MarkupSafe==2.0.1
matplotlib==3.3.4
mccabe==0.7.0
mistune==0.8.4
nbclassic==0.3.5
nbclient==0.5.9
nbconvert==6.0.7
nbformat==5.1.3
nest-asyncio==1.6.0
nodejs==0.1.1
notebook==6.4.10
numexpr==2.8.1
numpy==1.19.5
optional-django==0.1.0
packaging==21.3
pandas==1.1.5
pandocfilters==1.5.1
parso==0.7.1
pexpect==4.9.0
pickleshare==0.7.5
Pillow==8.4.0
Pint==0.17
platformdirs==2.4.0
pluggy==1.0.0
-e git+https://github.com/creare-com/podpac.git@fe1e81a50e60cfd950c2e8f41a05784656708ba0#egg=podpac
prometheus-client==0.17.1
prompt-toolkit==3.0.36
ptyprocess==0.7.0
py==1.11.0
pyasn1==0.5.1
pycparser==2.21
Pydap==3.2.2
Pygments==2.14.0
pylint==2.13.9
pyparsing==3.1.4
pyrsistent==0.18.0
pytest==7.0.1
pytest-asyncio==0.16.0
pytest-cov==4.0.0
pytest-html==3.2.0
pytest-metadata==1.11.0
pytest-mock==3.6.1
pytest-xdist==3.0.2
python-dateutil==2.9.0.post0
pytz==2025.2
PyYAML==5.4.1
pyzmq==25.1.2
rasterio==1.2.10
recommonmark==0.7.1
requests==2.27.1
rsa==4.7.2
s3transfer==0.5.2
scipy==1.5.4
Send2Trash==1.8.3
six==1.17.0
sniffio==1.2.0
snowballstemmer==2.2.0
snuggs==1.4.7
soupsieve==2.3.2.post1
Sphinx==5.3.0
sphinx-autobuild==2021.3.14
sphinx-rtd-theme==2.0.0
sphinxcontrib-applehelp==1.0.2
sphinxcontrib-devhelp==1.0.2
sphinxcontrib-htmlhelp==2.0.0
sphinxcontrib-jquery==4.1
sphinxcontrib-jsmath==1.0.1
sphinxcontrib-qthelp==1.0.3
sphinxcontrib-serializinghtml==1.1.5
terminado==0.12.1
testpath==0.6.0
tomli==1.2.3
tornado==6.1
traitlets==4.3.3
traittypes==0.2.1
typed-ast==1.5.5
typing_extensions==4.1.1
urllib3==1.26.20
wcwidth==0.2.13
webencodings==0.5.1
WebOb==1.8.9
websocket-client==1.3.1
widgetsnbextension==3.6.10
wrapt==1.16.0
xarray==0.16.2
zipp==3.6.0

name: podpac
channels:
  - defaults
  - https://repo.anaconda.com/pkgs/main
  - https://repo.anaconda.com/pkgs/r
  - conda-forge
dependencies:
  - _libgcc_mutex=0.1=main
  - _openmp_mutex=5.1=1_gnu
  - ca-certificates=2025.2.25=h06a4308_0
  - certifi=2021.5.30=py36h06a4308_0
  - ld_impl_linux-64=2.40=h12ee557_0
  - libffi=3.3=he6710b0_2
  - libgcc-ng=11.2.0=h1234567_1
  - libgomp=11.2.0=h1234567_1
  - libstdcxx-ng=11.2.0=h1234567_1
  - ncurses=6.4=h6a678d5_0
  - openssl=1.1.1w=h7f8727e_0
  - pip=21.2.2=py36h06a4308_0
  - python=3.6.13=h12debd9_1
  - readline=8.2=h5eee18b_0
  - setuptools=58.0.4=py36h06a4308_0
  - sqlite=3.45.3=h5eee18b_0
  - tk=8.6.14=h39e8969_0
  - wheel=0.37.1=pyhd3eb1b0_0
  - xz=5.6.4=h5eee18b_1
  - zlib=1.2.13=h5eee18b_1
  - pip:
      - affine==2.3.1
      - alabaster==0.7.13
      - anyio==3.6.2
      - argon2-cffi==21.3.0
      - argon2-cffi-bindings==21.2.0
      - astroid==2.11.7
      - async-generator==1.10
      - attrs==22.2.0
      - awscli==1.24.10
      - babel==2.11.0
      - backcall==0.2.0
      - beautifulsoup4==4.12.3
      - bleach==4.1.0
      - boto3==1.23.10
      - botocore==1.26.10
      - cached-property==1.5.2
      - cffi==1.15.1
      - charset-normalizer==2.0.12
      - click==8.0.4
      - click-plugins==1.1.1
      - cligj==0.7.2
      - colorama==0.4.4
      - comm==0.1.4
      - commonmark==0.9.1
      - contextvars==2.4
      - coverage==6.2
      - coveralls==3.3.1
      - cycler==0.11.0
      - dataclasses==0.8
      - decorator==5.1.1
      - defusedxml==0.7.1
      - dill==0.3.4
      - docopt==0.6.2
      - docutils==0.16
      - entrypoints==0.4
      - execnet==1.9.0
      - h5py==3.1.0
      - idna==3.10
      - imagesize==1.4.1
      - immutables==0.19
      - importlib-metadata==4.8.3
      - importlib-resources==5.4.0
      - iniconfig==1.1.1
      - ipykernel==5.5.6
      - ipyleaflet==0.14.0
      - ipympl==0.8.8
      - ipython==7.16.3
      - ipython-genutils==0.2.0
      - ipywidgets==7.8.5
      - isort==5.10.1
      - jedi==0.17.2
      - jinja2==3.0.3
      - jmespath==0.10.0
      - json5==0.9.16
      - jsonschema==3.2.0
      - jupyter-client==7.1.2
      - jupyter-core==4.9.2
      - jupyter-server==1.13.1
      - jupyterlab==3.2.9
      - jupyterlab-pygments==0.1.2
      - jupyterlab-server==2.10.3
      - jupyterlab-widgets==1.1.11
      - kiwisolver==1.3.1
      - lazy-import==0.2.2
      - lazy-object-proxy==1.7.1
      - livereload==2.6.3
      - lxml==5.3.1
      - markupsafe==2.0.1
      - matplotlib==3.3.4
      - mccabe==0.7.0
      - mistune==0.8.4
      - nbclassic==0.3.5
      - nbclient==0.5.9
      - nbconvert==6.0.7
      - nbformat==5.1.3
      - nest-asyncio==1.6.0
      - nodejs==0.1.1
      - notebook==6.4.10
      - numexpr==2.8.1
      - numpy==1.19.5
      - optional-django==0.1.0
      - packaging==21.3
      - pandas==1.1.5
      - pandocfilters==1.5.1
      - parso==0.7.1
      - pexpect==4.9.0
      - pickleshare==0.7.5
      - pillow==8.4.0
      - pint==0.17
      - platformdirs==2.4.0
      - pluggy==1.0.0
      - prometheus-client==0.17.1
      - prompt-toolkit==3.0.36
      - ptyprocess==0.7.0
      - py==1.11.0
      - pyasn1==0.5.1
      - pycparser==2.21
      - pydap==3.2.2
      - pygments==2.14.0
      - pylint==2.13.9
      - pyparsing==3.1.4
      - pyrsistent==0.18.0
      - pytest==7.0.1
      - pytest-asyncio==0.16.0
      - pytest-cov==4.0.0
      - pytest-html==3.2.0
      - pytest-metadata==1.11.0
      - pytest-mock==3.6.1
      - pytest-xdist==3.0.2
      - python-dateutil==2.9.0.post0
      - pytz==2025.2
      - pyyaml==5.4.1
      - pyzmq==25.1.2
      - rasterio==1.2.10
      - recommonmark==0.7.1
      - requests==2.27.1
      - rsa==4.7.2
      - s3transfer==0.5.2
      - scipy==1.5.4
      - send2trash==1.8.3
      - six==1.17.0
      - sniffio==1.2.0
      - snowballstemmer==2.2.0
      - snuggs==1.4.7
      - soupsieve==2.3.2.post1
      - sphinx==5.3.0
      - sphinx-autobuild==2021.3.14
      - sphinx-rtd-theme==2.0.0
      - sphinxcontrib-applehelp==1.0.2
      - sphinxcontrib-devhelp==1.0.2
      - sphinxcontrib-htmlhelp==2.0.0
      - sphinxcontrib-jquery==4.1
      - sphinxcontrib-jsmath==1.0.1
      - sphinxcontrib-qthelp==1.0.3
      - sphinxcontrib-serializinghtml==1.1.5
      - terminado==0.12.1
      - testpath==0.6.0
      - tomli==1.2.3
      - tornado==6.1
      - traitlets==4.3.3
      - traittypes==0.2.1
      - typed-ast==1.5.5
      - typing-extensions==4.1.1
      - urllib3==1.26.20
      - wcwidth==0.2.13
      - webencodings==0.5.1
      - webob==1.8.9
      - websocket-client==1.3.1
      - widgetsnbextension==3.6.10
      - wrapt==1.16.0
      - xarray==0.16.2
      - zipp==3.6.0
prefix: /opt/conda/envs/podpac

podpac/core/data/test/test_types.py::TestReprojectedSource::test_base_definition podpac/core/test/test_node.py::TestNode::test_base_definition_coordinates_attr
podpac/core/data/test/test_types.py::test_allow_missing_modules podpac/core/data/test/test_types.py::TestArray::test_source_trait podpac/core/data/test/test_types.py::TestArray::test_get_data podpac/core/data/test/test_types.py::TestArray::test_native_coordinates podpac/core/data/test/test_types.py::TestArray::test_base_definition podpac/core/data/test/test_types.py::TestArray::test_definition podpac/core/data/test/test_types.py::TestPyDAP::test_init podpac/core/data/test/test_types.py::TestPyDAP::test_traits podpac/core/data/test/test_types.py::TestPyDAP::test_auth_session podpac/core/data/test/test_types.py::TestPyDAP::test_dataset podpac/core/data/test/test_types.py::TestPyDAP::test_source podpac/core/data/test/test_types.py::TestPyDAP::test_get_data podpac/core/data/test/test_types.py::TestPyDAP::test_native_coordinates podpac/core/data/test/test_types.py::TestPyDAP::test_keys podpac/core/data/test/test_types.py::TestCSV::test_init podpac/core/data/test/test_types.py::TestCSV::test_native_coordinates podpac/core/data/test/test_types.py::TestCSV::test_data podpac/core/data/test/test_types.py::TestRasterio::test_init podpac/core/data/test/test_types.py::TestRasterio::test_traits podpac/core/data/test/test_types.py::TestRasterio::test_dataset podpac/core/data/test/test_types.py::TestRasterio::test_default_native_coordinates podpac/core/data/test/test_types.py::TestRasterio::test_get_data podpac/core/data/test/test_types.py::TestRasterio::test_band_descriptions podpac/core/data/test/test_types.py::TestRasterio::test_band_count podpac/core/data/test/test_types.py::TestRasterio::test_band_keys podpac/core/data/test/test_types.py::TestRasterio::test_get_band_numbers podpac/core/data/test/test_types.py::TestRasterio::tests_source podpac/core/data/test/test_types.py::TestH5PY::test_init podpac/core/data/test/test_types.py::TestH5PY::test_native_coordinates podpac/core/data/test/test_types.py::TestH5PY::test_data podpac/core/data/test/test_types.py::TestH5PY::test_keys podpac/core/data/test/test_types.py::TestH5PY::test_attrs podpac/core/data/test/test_types.py::TestWCS::test_wcs_defaults podpac/core/data/test/test_types.py::TestWCS::test_init podpac/core/data/test/test_types.py::TestWCS::test_traits podpac/core/data/test/test_types.py::TestWCS::test_get_capabilities_url podpac/core/data/test/test_types.py::TestWCS::test_get_wcs_coordinates podpac/core/data/test/test_types.py::TestWCS::test_get_native_coordinates podpac/core/data/test/test_types.py::TestWCS::test_get_data podpac/core/data/test/test_types.py::TestReprojectedSource::test_init podpac/core/data/test/test_types.py::TestReprojectedSource::test_traits podpac/core/data/test/test_types.py::TestReprojectedSource::test_native_coordinates podpac/core/data/test/test_types.py::TestReprojectedSource::test_get_data podpac/core/data/test/test_types.py::TestReprojectedSource::test_base_ref podpac/core/data/test/test_types.py::TestReprojectedSource::test_deserialize_reprojected_coordinates podpac/core/data/test/test_types.py::TestS3::test_init podpac/core/data/test/test_types.py::TestS3::test_traits podpac/core/data/test/test_types.py::TestS3::test_node podpac/core/data/test/test_types.py::TestS3::test_s3_bucket podpac/core/data/test/test_types.py::TestS3::test_s3_data podpac/core/data/test/test_types.py::TestS3::test_path_exists podpac/core/data/test/test_types.py::TestS3::test_get_data podpac/core/data/test/test_types.py::TestS3::test_del podpac/core/test/test_node.py::TestNode::test_base_ref podpac/core/test/test_node.py::TestNode::test_base_definition podpac/core/test/test_node.py::TestNode::test_base_definition_array_attr podpac/core/test/test_node.py::TestNode::test_base_definition_unserializable podpac/core/test/test_node.py::TestNode::test_definition podpac/core/test/test_node.py::TestNode::test_make_pipeline_definition podpac/core/test/test_node.py::TestNode::test_make_pipeline_definition_duplicate_ref podpac/core/test/test_node.py::TestNode::test_pipeline podpac/core/test/test_node.py::TestNode::test_json podpac/core/test/test_node.py::TestNode::test_hash podpac/core/test/test_node.py::TestNode::test_eval_not_implemented podpac/core/test/test_node.py::TestNode::test_find_coordinates_not_implemented podpac/core/test/test_node.py::TestNode::test_eval_group podpac/core/test/test_node.py::TestCreateOutputArray::test_create_output_array_default podpac/core/test/test_node.py::TestCreateOutputArray::test_create_output_array_data podpac/core/test/test_node.py::TestCreateOutputArray::test_create_output_array_dtype podpac/core/test/test_node.py::TestCaching::test_has_cache podpac/core/test/test_node.py::TestCaching::test_has_coordinates podpac/core/test/test_node.py::TestCaching::test_get_put_cache podpac/core/test/test_node.py::TestCaching::test_get_put_coordinates podpac/core/test/test_node.py::TestCaching::test_put_overwrite podpac/core/test/test_node.py::TestCaching::test_rem_all podpac/core/test/test_node.py::TestCaching::test_rem_key podpac/core/test/test_node.py::TestCaching::test_rem_coordinates podpac/core/test/test_node.py::TestCaching::test_rem_key_coordinates podpac/core/test/test_node.py::TestCachePropertyDecorator::test_cache_property_decorator podpac/core/test/test_node.py::TestCachePropertyDecorator::test_cache_func_decorator_with_no_cache
podpac/core/utils.py podpac/core/node.py podpac/core/data/types.py
podpac/core/utils.py podpac/core/node.py podpac/core/data/types.py