How does one export "Annotations" along with the "Datasets" when exporting a NASACDF file?

I can export my data as follows

Export[NotebookDirectory[] <> filename, {
  "ModJDate" -> data[[1, ;; , 1]]
  , "Lat" -> data[[;; , ;; , 2]]
  , "Lon" -> data[[;; , ;; , 3]]
  , "Alt" -> data[[;; , ;; , 4]]
  , "PercentShadow" -> data[[;; , ;; , 4]]
  }, {"NASACDF", "Datasets"}]

But I would Like to also include meta data to each Dataset.