Fine-scale, poleward transport of tropical air during AASE 2

Journal Article · Tue Nov 15 04:00:00 EST 1994 · Geophysical Research Letters

DOI:https://doi.org/10.1029/94GL01082· OSTI ID:57045

Waugh, D W; Plumb, R A ^[1]; Newman, P A; Schoeberl, M R; Lait, L R ^[2]; Loewenstein, M; Podolske, J R; Chan, K R ^[3]; Elkins, J W ^[4]

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1. Massachusetts Institute of Technology, Cambridge, MA (United States)
2. NASA/Goddard Space Flight Center, Greenbelt, MD (United States)
3. NASA/Ames Research Center, IA (United States)
4. NOAA Climate Monitoring and Diagnostics Lab., Boulder, CO (United States)

The poleward transport of tropical air in the lower stratosphere during the winter period of the second Airborne Arctic Stratospheric Expedition (December 1991-March 1992) is examined using contour advection calculations. These calculations show that filaments of tropical air extend into mid-latitudes, and are wrapped around the equatorward edge of the polar jet. Simultaneously filaments are drawn from the polar vortex and are intermingled with the filaments of tropical air. The tropical filaments are consistent with measurements of chemical tracers taken aboard the ER-2 and DC-8 aircraft which show localized regions, in mid-latitudes, of air with the characteristics of tropical air. 24 refs., 3 figs.

• OSTI ID: 57045
• Journal Information: Geophysical Research Letters, Journal Name: Geophysical Research Letters Journal Issue: 23 Vol. 21; ISSN GPRLAJ; ISSN 0094-8276
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
ATMOSPHERIC CIRCULATION
MIXING
STRATOSPHERE