Mid-latitude observations of the seasonal variation of BrO .1. Zenith-sky measurements

被引：15

作者：

Aliwell, SR ^{[1
]}

Jones, RL ^{[1
]}

Fish, DJ ^{[1
]}

机构：

[1] UNIV READING,DEPT METEOROL,READING RG6 6BB,BERKS,ENGLAND

来源：

GEOPHYSICAL RESEARCH LETTERS | 1997年 / 24卷 / 10期

关键词：

D O I：

10.1029/97GL01165

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Zenith-sky observations of the seasonal evolution of BrO slant columns above Aberdeen (57 degrees N) between November 1994 and April 1995 are presented. The measurements show maximum differential BrO slant columns (90 degrees-81 degrees) of 2.4 x 10(14) molecules cm(-2) in January, decreasing to 1 x 10(14) in spring. On a seasonal timescale, BrO slant columns are anticorrelated with NO2 slant columns, which is qualitatively consistent with BrONO2 being the main nighttime bromine reservoir. There is some evidence for a small (5 x 10(13) molecules cm(-2)) increase in sunrise BrO slant columns inside the polar vortex, following chlorine activation on PSCs, as shown by measurements of large OClO slant columns.

引用

页码：1195 / 1198

页数：4

共 15 条

[11] Impact of heterogeneous BrONO2 hydrolysis on ozone trends and transient ozone loss during volcanic periods [J].

Randeniya, LK ;

Vohralik, PF ;

Plumb, IC ;

Ryan, KR ;

Baughcum, SL .

GEOPHYSICAL RESEARCH LETTERS, 1996, 23 (13) :1633-1636

[12]

RICHTER A, 1996, UNPUB J ATMOS CHEM

[13] ON THE INTERPRETATION OF ZENITH SKY ABSORPTION-MEASUREMENTS [J].

SOLOMON, S ;

SCHMELTEKOPF, AL ;

SANDERS, RW .

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 1987, 92 (D7) :8311-8319

[14] ABSORPTION CROSS-SECTION OF BRO BETWEEN 312 AND 385 NM AT 298 AND 223-K [J].

WAHNER, A ;

RAVISHANKARA, AR ;

SANDER, SP ;

FRIEDL, RR .

CHEMICAL PHYSICS LETTERS, 1988, 152 (06) :507-512

[15]

*WMO, 1994, SCI ASS OZ DEPL

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