yong jie wong, ali yeganeh, min yan chia, huan yu shiu, maggie chel gee ooi, jackson hian hui chang, yoshihisa shimizu, homma ryosuke, sophal try, ahmed elbeltagi.  (2023).  quantification of covid-19 impacts on no2 and o3: systematic model selection and hyperparameter optimization on ai-based meteorological-normalization methods.  - atmospheric environment.  1-20. 

qing li, kun zhang, rui li, liumei yang, yanan yi, zhiqiang liu, xiaojuan zhang, jialiang feng, qiongqiong wang, wu wang, ling huang, yangjun wang, shunyao wang, hui chen, andy chan, mohd talib latif, maggie chel gee ooi, li li, et al..  (2023).  underestimation of biomass burning contribution to pm2.5 due to its chemical degradation based on hourly measurements of organic tracers: a case study in the yangtze river delta (yrd) region, china.  - science of the total environment.  1-12. 

linghuang, yonghui zhu, hanqing liu, yangjun wang, david t. allen, maggie chel gee ooi, kasemsan manomaiphiboone, mohd talib latif, andy chan, li li.  (2023).  assessing the contribution of open crop straw burning to ground-level ozone and associated health impacts in china and the effectiveness of straw burning bans.  - environmental international.  1-9. 

yijing zheng, maggie chel gee ooi, liew juneng, hin boo wee, mohd talib latif, mohd shahrul mohd nadzir, norfazrin mohd hanif, andy chan, li li, norfazilah binti ahmad, fredolin tangang.  (2023).  assessing the impacts of climate variables on long-term air quality trends in peninsular malaysia.  - science of the total environment.  1-16. 

nasim hossein hamzeh, abbas ranjbar saadat abadi, maggie chel gee ooi, maral habibi, wolfgang schöner.  (2022).  analyses of a lake dust source in the middle east through models performance.  - remote sensing.  1-26. 

mohd rashdan topa, mohd talib latif, murnira othman, maggie ooi chel gee, norfazrin mohd hanif, mohd shahrul mohd nadzir, haris hafizal abd hamid, anis asma ahmad mohtar, liew juneng.  (2023).  rekod jangka panjang kepekatan metana di malaysia.  - sains malaysiana.  1359-1370. 

abbas ranjbar saadat abadi, nasim hossein hamzeh, maggie chel gee ooi, steven soon-kai kong, christian opp.  (2022).  investigation of two severe shamal dust storms and the highest dust frequencies in the south and southwest of iran.  - atmosphere.  1-22. 

ling huang, ziyi liu, hongli li, yangjun wang, yumin li, yonghui zhu, maggie chel gee ooi, jing an, yu shang, dongping zhang, andy chan, li li.  (2020).  the silver lining of covid-19 - estimation of short-term health impacts due to lockdown in the yangtze river delta region, china.  - geohealth.  1-9. 

qing li, kun zhang, rui li, liumei yang, yanan yi, zhiqiang liu, xiaojuan zhang, jialiang feng, qiongqiong wang, wu wang, ling huang, yangjun wang, shunyao wang, hui chen, andy chan, mohd talib latif, maggie chel gee ooi, li li, et al..  (2023).  underestimation of biomass burning contribution to pm2.5 due to its chemical degradation based on hourly measurements of organic tracers: a case study in the yangtze river delta (yrd) region, china.  - science of the total environment.  1-12. 

yong jie wong, ali yeganeh, min yan chia, huan yu shiu, maggie chel gee ooi, jackson hian hui chang, yoshihisa shimizu, homma ryosuke, sophal try, ahmed elbeltagi.  (2023).  quantification of covid-19 impacts on no2 and o3: systematic model selection and hyperparameter optimization on ai-based meteorological-normalization methods.  - atmospheric environment.  1-20. 

yijing zheng, maggie chel gee ooi, liew juneng, hin boo wee, mohd talib latif, mohd shahrul mohd nadzir, norfazrin mohd hanif, andy chan, li li, norfazilah binti ahmad, fredolin tangang.  (2023).  assessing the impacts of climate variables on long-term air quality trends in peninsular malaysia.  - science of the total environment.  1-16. 

linghuang, yonghui zhu, hanqing liu, yangjun wang, david t. allen, maggie chel gee ooi, kasemsan manomaiphiboone, mohd talib latif, andy chan, li li.  (2023).  assessing the contribution of open crop straw burning to ground-level ozone and associated health impacts in china and the effectiveness of straw burning bans.  - environmental international.  1-9. 

mohd rashdan topa, mohd talib latif, murnira othman, maggie ooi chel gee, norfazrin mohd hanif, mohd shahrul mohd nadzir, haris hafizal abd hamid, anis asma ahmad mohtar, liew juneng.  (2023).  rekod jangka panjang kepekatan metana di malaysia.  - sains malaysiana.  1359-1370. 

chen, y.x., chan, a., yenn, t.f., ooi, c.g., li, l..  (2023).  a study of the effect of open biomass burning aerosol on rainfall event over malaysia by using eof analysis.  - the 2022 international conference on science & technology applications in climate change (staclim 2022).  1-11. 

aulia nisa'ul khoir, maggie chel gee ooi, juneng liew, suradi, andang kurniawan, azka ni'amillah.  (2021).  modis-derived fire spatial and temporal distribution during haze season in southeast asia using empirical orthogonal function.  - the 2021 international conference on science & technology applications in climate change (staclim 2021).  1-11. 

h mahidin, m t latif, a hamdan, j salleh, d dominick, m c g ooi, l juneng, s zawawi.  (2021).  spatio-temporal of surface ozone (o3) variations at urban and suburban sites in sarawak region of malaysia.  - 4th international conference on science and technology applications in climate change 2021.  1-10. 

aulia ni'saul khoir, maggie chel gee ooi, nur nazmi liyana mohd napi.  (2023).  long-term spatiotemporal distribution of fire over maritime continent and their responses to climate anomalies.  - .  609. 

ooi, m.c.g., chan, a., latif, m.t., lin, n.-h., li, l..  (2022).  handbook of energy and environmental security.  - .  22. 

aulia ni'saul khoir, maggie chel gee ooi, nur nazmi liyana mohd napi.  (2023).  long-term spatiotemporal distribution of fire over maritime continent and their responses to climate anomalies.  - .  609. 

ooi, m.c.g., chan, a., latif, m.t., lin, n.-h., li, l..  (2022).  handbook of energy and environmental security.  - .  22. 

ooi chel gee;liew ju neng.  (2023).  trans-boundary wildfire biomass burning haze prediction system for peninsular southeast asia (psa) to malaysia and taiwan.  - .  . 

ooi chel gee.  (2023).  ukm launches climate database to encourage citizen science.  - the petri dish.  1-4. 

maggie ooi chel gee, wang hong kok.  (2023).  sustainable urban scale planning: consideration of weather & air quality.  - jurutera.  16-20. 

ooi chel gee.  (2023).  rakyat malaysia tidak cakna perubahan iklim?.  - bernama.  1-5. 

ooi chel gee.  (2023).  most malaysians not sure what they can do to tackle climate change expert.  - bernama.  1-4.