Mixing events revealed by anomalous tracer relationships in the Arctic vortex during winter 1999/2000

被引:13
作者
Jost, HJ
Loewenstein, M
Greenblatt, JB
Podolske, JR
Bui, TP
Hurst, DF
Elkins, JW
Herman, RL
Webster, CR
Schauffler, SM
Atlas, EL
Newman, PA
Lait, LR
Wofsy, SC
机构
[1] NASA, Ames Res Ctr, Moffett Field, CA 94035 USA
[2] Bay Area Environm Res Inst, Sonoma, CA USA
[3] NOAA, Climate Monitoring & Diagnost Lab, Boulder, CO 80305 USA
[4] Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA
[5] CALTECH, Jet Prop Lab, Pasadena, CA USA
[6] Natl Ctr Atmospher Res, Div Atmospher Chem, Boulder, CO 80307 USA
[7] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA
[8] Harvard Univ, Dept Earth & Planetary Sci, Cambridge, MA 02138 USA
关键词
polar vortex; stratosphere; ozone layer; mixing; atmospheric dynamics;
D O I
10.1029/2002JD002380
中图分类号
P4 [大气科学(气象学)];
学科分类号
0706 ; 070601 ;
摘要
[1] During the 1999/2000 Arctic winter SAGE III-Ozone Loss and Validation Experiment (SOLVE) campaign, high-resolution, in situ tracer data measured aboard the NASA ER-2 high-altitude aircraft revealed anomalous mixing events within the polar vortex. From January to March 2000 in the 350-500 K potential temperature range, we found mixing events during 15% of the flight time on average with significant maxima at potential temperatures of 450, 410, and 380 K. The events were spread throughout the vortex but showed a distinct minimum at 73degrees N and a peak at 85 degreesN equivalent latitude. About 60% of the observed mixing events were less than 13 km wide. Based on a case study of tracer-tracer relationships, an objective simple method is introduced to detect such events using the linear nitrous oxide (N2O): potential temperature relationship observed deep in the vortex. Rigorous analysis and supporting evidence from total water data corroborated the validity of the method. These results suggest mixing across the polar vortex edge occurred preferentially in layers at select altitudes in the Arctic winter 1999/2000.
引用
收藏
页码:XXLIII / XXLIV
页数:9
相关论文
共 37 条
[1]   TRACER-TRACER RELATIONSHIPS AND LOWER STRATOSPHERIC DYNAMICS - CO2 AND N2O CORRELATIONS DURING SPADE [J].
BOERING, KA ;
DAUBE, BC ;
WOFSY, SC ;
LOEWENSTEIN, M ;
PODOLSKE, JR ;
KEIM, ER .
GEOPHYSICAL RESEARCH LETTERS, 1994, 21 (23) :2567-2570
[2]   Role of NOy as a diagnostic of small-scale mixing in a denitrified polar vortex -: art. no. 4794 [J].
Gao, RS ;
Popp, PJ ;
Ray, EA ;
Rosenlof, KH ;
Northway, MJ ;
Fahey, DW ;
Tuck, AF ;
Webster, CR ;
Hurst, DF ;
Schauffler, SM ;
Jost, H ;
Bui, TP .
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2002, 107 (D24) :ACL21-1
[3]   STRATOSPHERIC CFCL3, CF2CL2, AND N2O HEIGHT PROFILE MEASUREMENTS AT SEVERAL LATITUDES [J].
GOLDAN, PD ;
KUSTER, WC ;
ALBRITTON, DL ;
SCHMELTEKOPF, AL .
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 1980, 85 (NC1) :413-423
[4]   Tracer-based determination of vortex descent in the 1999/2000 Arctic winter -: art. no. 8279 [J].
Greenblatt, JB ;
Jost, HJ ;
Loewenstein, M ;
Podolske, JR ;
Hurst, DF ;
Elkins, JW ;
Schauffler, SM ;
Atlas, EL ;
Herman, RL ;
Webster, CR ;
Bui, TP ;
Moore, FL ;
Ray, EA ;
Oltmans, S ;
Vömel, H ;
Blavier, JF ;
Sen, B ;
Stachnik, RA ;
Toon, GC ;
Engel, A ;
Müller, M ;
Schmidt, U ;
Bremer, H ;
Pierce, RB ;
Sinnhuber, BM ;
Chipperfield, M ;
Lefèvre, F .
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2002, 107 (D20)
[5]   Defining the polar vortex edge from an N2O:potential temperature correlation -: art. no. 8268 [J].
Greenblatt, JB ;
Jost, HJ ;
Loewenstein, M ;
Podolske, JR ;
Bui, TP ;
Hurst, DF ;
Elkins, JW ;
Herman, RL ;
Webster, CR ;
Schauffler, SM ;
Atlas, EL ;
Newman, PA ;
Lait, LR ;
Müller, M ;
Engel, A ;
Schmidt, U .
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2002, 107 (D20)
[6]   Effective diffusivity as a diagnostic of atmospheric transport 1. Stratosphere [J].
Haynes, P ;
Shuckburgh, E .
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2000, 105 (D18) :22777-22794
[7]   Hydration, dehydration, and the total hydrogen budget of the 1999/2000 winter Arctic stratosphere [J].
Herman, RL ;
Drdla, K ;
Spackman, JR ;
Hurst, DF ;
Popp, PJ ;
Webster, CR ;
Romashkin, PA ;
Elkins, JW ;
Weinstock, EM ;
Gandrud, BW ;
Toon, GC ;
Schoeberl, MR ;
Jost, H ;
Atlas, EL ;
Bui, TP .
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2002, 108 (D5)
[8]   Construction of a unified, high-resolution nitrous oxide data set for ER-2 flights during SOLVE [J].
Hurst, DF ;
Schauffler, SM ;
Greenblatt, JB ;
Jost, H ;
Herman, RL ;
Elkins, JW ;
Romashkin, PA ;
Atlas, EL ;
Donnelly, SG ;
Podolske, JR ;
Loewenstein, M ;
Webster, CR ;
Flesch, GJ ;
Scott, DC .
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2002, 107 (D20)
[9]  
Kalnay E, 1996, B AM METEOROL SOC, V77, P437, DOI 10.1175/1520-0477(1996)077<0437:TNYRP>2.0.CO
[10]  
2