König-Langlo, Gert (2006): Radiosonde PS69/26959 during POLARSTERN cruise ANT-XXIII/7 on 2006-09-21 11:11h. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.549126, In: König-Langlo, G (2009): Upper air soundings during POLARSTERN cruise ANT-XXIII/7. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.849136