Daily distribution Map of Ozone (O3) from AIRS over Southeast Asia

M.Z Matjafri,H.S Lim,Jasim M Rajab,K Abdullah

doi:10.3844/erjsp.2010.158.164

Abstract

Problem statement: Daily retrieved Ozone (O3) column data for 12 day for periods varying (11-18 August) 2005 and 2003 and (12-19 February) 2005, obtained from the Atmospheric Infrared Sounder AIRS, are utilized to investigate the ozone distribution over the Southeast Asia. Approach: AIRS included on the Earth Observing System (EOS) Aqua satellite launched on 4 May 2002. Ozone (O3) is the gas that naturally present in our atmosphere and is a critical atmospheric trace species in the stratosphere and troposphere. Most ozone resides in the stratosphere. Ozone can be “good” or “bad” for your health and the environment. Closer to Earth, in the air we breathe, Ozone is a harmful pollutant that causes damage to lung tissue and plants; it is a major constituent of smog. Results: The aim of this study was to investigate Daily Distribution map and Indonesia forest fires influences on O3 over Peninsular Malaysia and Thailand. The land use map of the study area was conducted by using total column O3 obtained from AIRS/Aqua Level 3 Daily (AIRX3STD) 1×1° spatial resolution ascending Standard, are used to study the O3 distribution and the impact of Indonesia forest fire. Considerable variations demonstrate annual changes in rainfall and drought patterns in various seasons (dry and wet season). Note such variations in the Ozone emissions over study area, while highest O3 occurs over Industrial, congested urban zones and existence of Swamps and lakes during dry season and a greater draw down of O3 occurs in the pristine marine environment over Surat Thani during wet seasons. Conclusion/Recommendations: In particular, we observe a quasi-biennial variation in O3 emissions from study area with two contrary cases, the higher concentrations around the equatorial regions at dry season and less at wet season. Examining satellite measurements, we find the enhanced O3 emission correlates with occasions of less rainfall during dry season.

Highlights

Many gases occur naturally in the atmosphere while others are synthetic, due to the industrial revolution began in the mid 1700s, both the natural and man-made Atmospheric concentrations gases have been raising over the last few centuries
For August 2003, where normal circumstances in the absence of any event, can observed, as further we move from the equator to the north, the greater concentration of ozone, the less values of O3 total column are found on 18 August at south Thailand over west coasts of Phang Nga and east coasts of Surat Thani (213 Dobson Unit (DU)) at latitude 8.5°, while the higher values over Industrial and congested urban zones on 11 August at north Thailand over Lao Tang Kam (288 DU)at latitude 17.5°, where existence a number of Swamps and lakes
2005 that was characterized increases Ozone by 5-25% integrated column ozone burden (DU) across the study in southern region, over peninsular Malaysia and south area enable detailed analyses of both the spatial and of Thailand because it’s a regions experienced temporal variations in emissions; Atmospheric Infrared Sounder (AIRS) can extensive to the intense Indonesia forest fire, while successfully detect O3 emission from large forest fires

Summary

Introduction

Many gases occur naturally in the atmosphere while others are synthetic, due to the industrial revolution began in the mid 1700s, both the natural and man-made Atmospheric concentrations gases have been raising over the last few centuries. Tropospheric ozone is central and highly reactive to many chemical transformations. Stratospheric ozone forms a protective shield that absorbs enough solar ultraviolet radiations to make life possible on the surface of the earth (Bian et al, 2007). Ozone (O3) is the gas that naturally present in our atmosphere and because of its good absorption of infrared radiation it considered an important and essential greenhouse gases. In the presence of sunlight when emissions of Nitrogen Oxides (NOx) combined with emissions of Hydrocarbons (HC), including volatile organic compounds (VOCs), react to form ozone (O3) (Morris et al, 2006). There, about 90% of atmospheric ozone is contained in the "Ozone layer,"

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