Add exact match for variable search

utilities.py

@@ -25,7 +25,9 @@ def get_opendap_urls_by_parameter(
 
     for url in urls:
         for var in list(netCDF4.Dataset(url).variables.keys()):
-            if var.startswith(parameter) and url not in datasets:
+            if var == parameter and url not in datasets:
+                datasets.append(url)
+            elif var.startswith('{0}_'.format(parameter)) and url not in datasets:
                 datasets.append(url)
             else:
                 pass