Update Data/README.md

Data/README.md

+# Data available at the department of Meteorology and Geophysics
+
+# Reanalysis data
+There are currently the following reanalysis available 
+
+| Name | Location | Contact | Resolution | Domain | Variables | Vertical Resolution | Comments | Source |
+| --- | --- | --- | --- | --- | --- | --- | --- | --- |
+| CERA 20C | /jetfs/shared-data/ECMWF/CERA_global_2deg | A. Plach | 2 deg x2 deg | Global | 
+
+
+# Observations
+
+# Satellite
+
+# Model Simulations