catalog4 - building back in datacube meta

catalog4/catalog.json

+{
+  "id": "STAC-Catalog",
+  "type": "Catalog",
+  "stac_version": "1.0.0",
+  "description": "Sample NHGF STAC catalog.",
+  "links": [
+    {
+      "rel": "root",
+      "href": "./catalog.json",
+      "title": "Catalog",
+      "type": "application/json"
+    },
+    {
+      "rel": "child",
+      "href": "./climate/catalog.json",
+      "title": "Climate",
+      "type": "application/json"
+    },
+    {
+      "rel": "self",
+      "href": "https://code.usgs.gov/wma/nhgf/stac/-/raw/main/catalog4/catalog.json",
+      "title": "Catalog",
+      "type": "application/json"
+    }
+  ],
+  "stac_extensions": [],
+  "title": "STAC Catalog"
+}
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catalog4/climate/catalog.json

+{
+    "id": "climate",
+    "type": "Catalog",
+    "stac_version": "1.0.0",
+    "description": "Climate data",
+    "links": [
+        {
+            "rel": "root",
+            "href": "../catalog.json",
+            "title": "NHGF Catalog",
+            "type": "application/json"
+        },
+        {
+            "rel": "child",
+            "href": "./conus404/collection.json",
+            "title": "CONUS404",
+            "type": "application/json"
+        },
+        {
+            "rel": "parent",
+            "href": "../catalog.json",
+            "title": "NHGF Catalog",
+            "type": "application/json"
+        },
+        {
+            "rel": "self",
+            "href": "https://code.usgs.gov/wma/nhgf/stac/-/raw/main/catalog4/climate/catalog.json",
+            "title": "CLIMATE",
+            "type": "application/json"
+        }
+    ],
+    "stac_extensions": [],
+    "title": "CLIMATE"
+}
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catalog4/climate/conus404/collection.json

+{
+  "id": "conus404",
+  "type": "Collection",
+  "stac_extensions": [],
+  "stac_version": "1.0.0",
+  "description": "CONUS404 40 years of daily values for subset of model output variables derived from hourly values on cloud storage",
+  "license": "CC0-1.0",
+  "title": "CONUS404",
+  "extent": {
+    "spatial": {
+      "bbox": [
+        [
+          -138.73135375976562,
+          17.647308349609375,
+          -57.068634033203125,
+          57.34341812133789
+        ]
+      ]
+    },
+    "temporal": {
+      "interval": [
+        [
+          "1979-10-01T00:00:00Z",
+          "2021-09-25T00:00:00Z"
+        ]
+      ]
+    }
+  },
+  "links": [
+    {
+      "rel": "root",
+      "href": "../../catalog.json",
+      "title": "NHGF Catalog",
+      "type": "application/json"
+    },
+    {
+      "rel": "item",
+      "href": "./conus404-daily/conus404-daily.json",
+      "title": "CONUS404 Daily",
+      "type": "application/json"
+    },
+    {
+      "rel": "parent",
+      "href": "../catalog.json",
+      "title": "CLIMATE",
+      "type": "application/json"
+    },
+    {
+      "rel": "self",
+      "href": "https://code.usgs.gov/wma/nhgf/stac/-/raw/main/catalog4/climate/conus404/collection.json",
+      "title": "CONUS404 Collection",
+      "type": "application/json"
+    }
+  ]
+}
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