update readme

README.md

@@ -10,7 +10,10 @@ a system for marine substrates datasets across the globe.
 This system uses very large amounts of diverse observational data and
 applies math methods to integrate/harmonize those
 and produces gridded data on the major properties of the seabed.
-The scope is the global ocean and across all depth zones.
+The scope is the global ocean and across all depth zones. 
+
+The current page serves only the data for the Gulf of Mexico region. Please note that 
+the data will be updated from time to time, approximately annually. 
 
 bmi_dbseabed also includes a [Basic Model Interface (BMI)](https://bmi.readthedocs.io/en/latest/),
 which converts the dbSEABED datasets into a reusable,
@@ -58,7 +61,7 @@ from bmi_dbseabed import DbSeabed
 dbseabed = DbSeabed()
 data = dbseabed.get_data(
     var_name="carbonate",
-    west=-98,
+    west=-98,n
     south=18,
     east=-80,
     north=31,

docs/source/index.md

@@ -13,6 +13,9 @@ applies math methods to integrate/harmonize those
 and produces gridded data on the major properties of the seabed.
 The scope is the global ocean and across all depth zones.
 
+The current page serves only the data for the Gulf of Mexico region. Please note that 
+the data will be updated from time to time, approximately annually. 
+
 bmi_dbseabed package includes a [Basic Model Interface (BMI)][bmi-docs],
 which converts the bmi_dbseabed dataset into a reusable,
 plug-and-play data component ([pymt_dbseabed][bmi_dbseabed-pymt]) for