Updates activity3.org

-* Activity 3
+* Examples for thw Wiki
 
-Before we start this activity, we would like to discuss with you if we
-would like to replicate one of the published papers that is
+We would like to discuss with you if we
+should replicate steops/figures in seevral  published papers that is
 accompanied by publicly available data sets. We are also open to some
-ideas related to developing new data products using existing publicly
+ideas related to developing examples  using existing publicly
 available data.
+
+- Example 1
+Paper Seasonality of halogen deposition in polar snow and ice https://www.atmos-chem-phys.net/14/9613/2014/
+Data sets https://doi.pangaea.de/10.1594/PANGAEA.833941
+- Example 2
+Time scale development using Owen ice core Hydrogen and oxygen isotopes https://arcticdata.io/catalog/view/doi:10.18739/A21J9774C