König-Langlo, Gert (1994): Radiosonde PS21/07823 during POLARSTERN cruise ANT-X/3 on 1992-04-21 05:21h. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.378731, In: König-Langlo, G (1993): Upper air soundings during POLARSTERN cruise ANT-X/3. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.849798