diff --git a/README.md b/README.md
index 9bccac1..7b09162 100644
--- a/README.md
+++ b/README.md
@@ -47,6 +47,22 @@ and select the `multiphase_chemistry_env` environment from the kernel options.
 ## Metadata review workflow
     - review through branches
     - updating files with metadata in Openbis
+
+## Metadata 
+| **Attribute**           | **CF Equivalent**           | **Definition**                                                                                                                                                     |
+|-------------------------|-----------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| campaign_name           |     -    | Denotes a range of possible campaigns, including laboratory and field experiments, beamtime, smog chamber studies, etc., related to atmospheric chemistry research.                                                                |
+| project                 | -            | Denotes a valid name of the project under which the data was collected or produced.                                                                                                                                                                         |
+| contact                    | contact (specifically E-mail address)           | Denotes the name of data producer who conducted the experiment or carried out the project that produced the raw dataset (or an aggragated dataset with multiple owners)                                                              | 
+| description             | title (only info about content), comment (too broad in scope), source          | Provides a short description of methods and processing steps used to arrive at the current version of the dataset.                                                    | 
+| experiment              | -         | Denotes a valid name of the specific experiment or study that generated the data.                                                                                           | 
+| actris_level            | -       | Indicates the processing level of the data within the ACTRIS (Aerosol, Clouds and Trace Gases Research Infrastructure) framework.                                   | 
+| dataset_startdate       | -         | Denotes the start datetime of the dataset collection time frame.                                                                                                                    |
+| dataset_enddate         | -           | Denotes the end date of the dataset collection time frame.                                                                                                                      |                          
+| processing_filename     | - | Denotes the name of the file used to process an initial version (e.g, original version) of the dataset into a processed dataset. | 
+| processing_date         | -                | The date when the data processing was  completed.                                                                                                                    |                                 |
+
+
     
 ### Specifying a compound attribute in yaml language.
 Consider the compound attribute *relative_humidity*, which has subattributes *value*, *units*, *range*, and *definition*. The yaml description of