Add links to papers using code and coverage of the research campaign

[tsherwen]

Related links

• NCAS coverage of the research campaign
  "Scientists search for new source of air pollutants by taking flight during Cape Verde dust season"
  

• NASA summary of "...NASA Field Campaigns Supported by GMAO"
  https://gmao.gsfc.nasa.gov/field_campaigns/past_campaigns.php

• UKRI / NERC funding of Atmospheric reactive nitrogen cycling over the ocean (ARNA) project
  https://gtr.ukri.org/projects?ref=NE%2FS000518%2F1

• Photo diary of the research campaign on Twitter and elsewhere
  https://twitter.com/drtomass/status/1224767591627001857

• FAAM coverage of ARNA campaign
  https://www.faam.ac.uk/tag/arna-project/

• Other FAAM coverage of campaign?
  https://www.faam.ac.uk/searching-for-new-source-of-air-pollutants-during-cape-verde-dust-season/faam-in-cape-verde-arna-runway-_1000px/

Publications from ARNA campaign