PROCESSING THE LIGHTNING DATA IN ANTARCTICA FROM WWLLN AND COMPARE THEM WITH GPS PWVPRESENTER : SITI FATIRAH BINTI RAMLISUPERVISOR : ASSOCIATE PROF DR. WAYAN

SUPARTACO-SUPERVISOR : MISS SITI KHALIJAH BINTI ZAINUDIN

CONTENT OVERVIEW Introduction Research Objectives Methodology Result and discussion Conclusion Future work

INTRODUCTION

LITERATURE OF LIGHTNING IN ANTARCTICA

From NASA SCIENCE NEWS

‘areas such as the Arctic and Antarctica have very few thunderstorms and, therefore,almost no lightning at all’ From GEOLOGY.COM

‘The poles have very little lightning because their white snow- and ice-covered surfaces are not

effectively warmed by the sun to produce convection. There is also very little moisture in polar air. These factors significantly reduce the amount of lightning produced near the poles. ’

AVERAGE YEARLY COUNTS OF LIGHTNING FLASHES PER SQUARE KILOMETER BASED ON DATA COLLECTED BY NASA'S LIGHTNING IMAGING SENSOR ON THE TROPICAL RAINFALL MEASURING MISSION

Gray or light purple - Places where less than one flash occurred (on average) each year are Deep red, grading to black - Places with the largest number of

lightning strikes are

WWLLN WORLD LIGHTNING MAP

Lightning stroke positions are shown as coloured dots

  blue for the most recent  (occurring within the last 10 min) 

green and yellow to red for the oldest   (30-40 minutes earlier) Red asterisks in white circles are active WWLLN lightning sensor locations. The terminator (day-night boundary) is shown, with the daylit section of the globe in grey. 

  

RESEARCH STATIONS CASEY (Australia) MAWSON (Australia) MCMURDO (US) PALMER (US)From this 4 research stations,the GPS data could be obtained

LOCATION OF RESEARCH STATION IN ANTARTICA

DATA USED Type of data Website

GPS data SOPAC and IGN

Scripps Orbit and Permanent Array Center

International GNSS Service

Meteorology data INTERFACE to BAS/MET Oracle Data

 Lightning data WWLLN

World Wide Lightning Location Network 

GPS PWV PWV

Represent the total amount of water vapor content in lower atmosphere that result from condensing all the water vapor in atmospheric column at particular time and over a given location from surface of earth to the top of atmosphere

LIGHTNING DATA FROM WWLLN

WWLLN stands for World Wide Lightning Location Network

WWLLN is maintain by the University of Washington with the cooperation of universities and institutes which host the stations around the globe

There are 5 sensors located in the Antarctica:> SANAE > Rothera > Davis> Scott Base > Syowa

RESEARCH OBJECTIVES To perform data analysis of GPS PWV data using Matlab To compare the GPS PWV data with lightning data from

WWLLN in Antartica

METHODOLOGYCollect GPS data from SOPAC/IGN

Analyze lightning data with PWV data

Data processing to get max angle

Collect meteorology data from BUS INTERFACE

Data processing to get PWV

Plot a graph of PWV against days in January

Collect lightning data from WWLLN

RESULT AND DISCUSSION

On 14th of January 2013GPS PWV increase before lightning happen and

decrease after lightning happen and the RMS energy value is the highest one

But on 22nd of January 2013As GPS PWV increase and it was the highest value

among all,the lightning happen but it RMS energy value is low

COMPARISON WITH OTHER RESEARCH ‘Monitoring the association between GPS PWV and lightning activity during 2009 winter monsoon over Bangi Malaysia’ PWV increase before lightning happen Research area in Bangi

the result from this research can only be used as reference but the result cannot be the same as research area different(temperature,climate,weather)

CONCLUSION Cannot conclude that as GPS PWV increase then lightning

will happen because on some other days when GPS PWV increase,lightning do not happen

FUTURE WORK Literature on lightning Writing final report

THANK YOU