VARIATION IN THE IONIC COMPOSITION IN CONVECTIVE SHOWERS IN PUNE, INDIA

被引：25

作者：

NAIK, MS ^{[1
]}

KHEMANI, LT ^{[1
]}

MOMIN, GA ^{[1
]}

RAO, PSP ^{[1
]}

PILLAI, AG ^{[1
]}

SAFAI, PD ^{[1
]}

机构：

[1] INDIAN INST TROP METEOROL,POONA 411008,INDIA

来源：

TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY | 1994年 / 46卷 / 01期

关键词：

D O I：

10.1034/j.1600-0889.1994.00006.x

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

Rain water samples of equal volume (100 ml) were collected sequentially from 5 convective shower events for a period of 2 years during the summer monsoon seasons of 1988 and 1989 at Pune. A marked decrease in the concentrations of soil-oriented elements Na+, K+, Ca2+ and Mg2+ was observed in the first few samples in all the events followed by a decrease in pH of the subsequent samples. Surprisingly, SO42- also showed similar variation, indicating that soil is contributing some SO42- in rain water. Washout process appears to be an important mechanism for the removal of the major ions from the atmosphere. However, rainout processes seem to be important for the removal of NO3- ions. The study points out that sequential sampling during a single shower appears to give better information about the relationship among H+, Na+, K+, Ca2+, Mg2+, SO42- and NO3- as compared to bulk sampling for longer duration.

引用

页码：68 / 75

页数：8