تقرير
Troposphere-to-Stratosphere Transport in the Lowermost Stratosphere from Measurements of H2O, CO2, N2O, and O3
| العنوان: | Troposphere-to-Stratosphere Transport in the Lowermost Stratosphere from Measurements of H2O, CO2, N2O, and O3 |
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| المؤلفون: | Hintsa, E. J, Boering, K. A, Weinstock, E. M, Anderson, J. G, Gary, B. L, Pfister, L, Daube, B. C, Wofsy, S. C, Loewenstein, M, Podolske, J. R, Margitan, J. J, Bui, T. P |
| المصدر: | Geophysical Research Letters. 25(14) |
| بيانات النشر: | United States: NASA Center for Aerospace Information (CASI), 1998. |
| سنة النشر: | 1998 |
| مصطلحات موضوعية: | Environment Pollution |
| الوصف: | The origin of air in the lowermost stratosphere is investigated with measurements from the NASA ER-2 aircraft. Air with high water vapor mixing ratios was observed in the stratosphere at theta approximately 330-380 K near 40 N in May 1995, indicating the influence of intrusions of tropospheric air. Assuming that observed tracer-tracer relationships reflect mixing lines between tropospheric and stratospheric air masses, we calculate mixing ratios of H2O (12-24 ppmv) and CO2 for the admixed tropospheric air at theta = 352-364 K. Temperatures on the 355 K surface 20-40 N were low enough to dehydrate air to these values. While most ER-2 CO2 data in both hemispheres are consistent with tropical or subtropical air entering the lowermost stratosphere, measurements from May 1995 for theta < 362 K suggest that entry of air from the midlatitude upper troposphere can occur in conjunction with mixing processes near the tropopause. |
| نوع الوثيقة: | Report |
| اللغة: | English |
| DOI: | 10.1029/98GL01797 |
| URL الوصول: | https://ntrs.nasa.gov/citations/19990069939 |
| ملاحظات: | NCC2-913 NCC2-694 |
| رقم الأكسشن: | edsnas.19990069939 |
| قاعدة البيانات: | NASA Technical Reports |
| DOI: | 10.1029/98GL01797 |
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