diff --git a/metobsapi/util/file_responses.py b/metobsapi/util/file_responses.py
index 2bfe4aadbb5a30abd3bb2f97ac7e470d9c81721a..56bf3df1a347957cf6697a2cfa5f77899227e0a0 100644
--- a/metobsapi/util/file_responses.py
+++ b/metobsapi/util/file_responses.py
@@ -2,6 +2,12 @@ import os
 from collections import defaultdict
 from metobsapi.util import ProductFrequency, FREQUENCY_DIR_FMT
 
+# ARM Data Levels: https://www.arm.gov/policies/datapolicies/formatting-and-file-naming-protocols
+L00_DESCRIPTION = "raw data – primary raw data stream collected directly from instrument"
+LA0_DESCRIPTION = "converted to netCDF"
+L11_DESCRIPTION = "calibration factors applied and converted to geophysical units"
+LB1_DESCRIPTION = "QC checks applied to measurements"
+
 # TODO: Load from config file
 ARCHIVE_INFO = {
     'aoss': {
@@ -11,6 +17,7 @@ ARCHIVE_INFO = {
                 'display_name': 'Tower',
                 'levels': {
                     'level_00': {
+                        'description': L00_DESCRIPTION,
                         'versions': ('version_00',),
                         'products': {
                             'ascii': {
@@ -21,6 +28,7 @@ ARCHIVE_INFO = {
                         },
                     },
                     'level_b1': {
+                        'description': LB1_DESCRIPTION,
                         'versions': ('version_00',),
                         'products': {
                             # 'nc-monthly': {
@@ -84,6 +92,7 @@ ARCHIVE_INFO = {
                 'display_name': 'AERI',
                 'levels': {
                     'level_00': {
+                        'description': L00_DESCRIPTION,
                         'versions': ('version_00',),
                         'products': {
                             'par': {