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. 

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

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. 

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. 

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

nur hidayah zakaria, nur asilah ishak, siti aekbal salleh, nurul amirah isa, erniza suhana, maggie chel gee ooi, zulkiflee abd. latif, mustafa ustuner.  (2023).  conceptualizing spatial heterogeneity of urban composition impacts onprecipitation within tropics.  - international journal of sustainable construction engineering and technology.  145-160. 

ooi chel gee.  (2023).  cetus fenomena cuaca ekstrem.  - harian metro.  1-5. 

wan shafrina binti wan mohd jaafar;khairul nizam abdul maulud;ooi chel gee.  (2023).  investigating forest canopy structural variations across malaysia using nasa global ecosystem dynamics investigation spaceborne light detection and ranging.  - .  . 

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, jean francois vuillaume, maggie chel gee ooi.  (2023).  seasonal and long term variability of o3 and no2 in tehran from 2010 to 2022.  - arabian journal of geosciences.  1-16. 

ooi chel gee, liew ju neng, fatimah p k ahamad, wan shafrina wan mohd jaafar.  (2023).  assessment and improvement of numerical chemical weather prediction model in capturing the air quality in malaysia.  - .  1-6. 

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 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. 

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. 

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.  - new straits times.  1-6. 

norzatul 'ezzah hasan dan maggie ooi chel gee.  (2022).  institute of climate change supports national greening aspirations.  - earth to space: institute of climate change e-bulletin.  11. 

yong jie wong, huan-yu shiu, jackson hian-hui chang, maggie chel gee ooi, hsueh-hsun li, ryosuke homma, yoshihisa shimizu, pei te chiueh, luksanaree maneechot, nik meriam nik sulaiman.  (2022).  spatiotemporal impact of covid-19 on taiwan air quality in the absence of a lockdown: influence of urban public transportation use and meteorological conditions.  - journal of cleaner production.  1-17. 

anis asma ahmad mohtar, mohd talib latif, doreena dominick maggie chel gee ooi, azliyana azhari, nor hafizah baharudin, norfazrin mohd hanif, jing xiang chung, liew juneng.  (2022).  spatiotemporal variations of particulate matter and their association with criteria pollutants and meteorology in malaysia.  - aerosol and air quality research.  1-20. 

sijia yin, xin yi, li li, ling huang, maggie chel gee ooi, yangjun wang, david t. allen, david streets.  (2022).  an updated anthropogenic emission inventory of reactive chlorine precursors in china.  - acs earth and space chemistry.  1846-1857. 

esmaeel adrah, wan shafrina wan mohd jaafar, hamdan omar, shaurya bajaj, rodrigo vieira leite, siti munirah mazlan, carlos alberto silva, maggie chel gee ooi, mohd nizam mohd said, khairul nizam abdul maulud, adrian cardil, midhun mohan.  (2022).  analyzing canopy height patterns and environmental landscape drivers in tropical forests using nasas gedi spaceborne lidar.  - remote sensing.  1-22. 

ooi chel gee, wang hong kok, tiong choong han.  (2022).  smart construction in the 21st century.  - jurutera.  16-20. 

aulia nisaul khoir, maggie chel gee ooi, liew juneng, m agfi isra ramadhan, rista hernandi virgianto, fredolin tangang.  (2022).  spatio-temporal analysis of aerosol optical depth using rotated empirical orthogonal function over the maritime continent from 2001 to 2020.  - atmospheric environment.  1-13. 

nur nazmi liyana mohd napi, maggie chel gee ooi, mohd latif talib, ju neng liew, mohd shahrul mohd nadzir, andy chan, li li, samsuri abdullah.  (2022).  aerosol species contribution to 2019 haze episodes over east coast peninsular malaysia.  - aerosol and air quality research.  1-50. 

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. 

steven soon-kai kong, shantanu kumar pani, stephen m. griffith, chang-feng ou-yang, saginela ravindra babu, ming-tung chuang, maggie chel gee ooi, wei-syun huang, guey-rong sheu, neng-huei lin.  (2022).  distinct transport mechanisms of east asian dust and the impact on downwind marine and atmospheric environments.  - science of the total environment.  1-15. 

li li, ansheng zhu, ling huang, qing wang, yixiao chen, maggie chel gee ooi, min wang, yangjun wang, andy chan.  (2022).  modeling the impacts of land use land cover change on meteorology and air quality during 2000 to 2018 in the yangtze river delta region, china.  - 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. 

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

yi, xin, yin, sijia, huang, ling, li, hongli, wang, yangjun, wang, qian, chan, andy, traoré, dramane, ooi, maggie chel gee, chen, yonghang, allen, david t, li, li.  (2021).  anthropogenic emissions of atomic chlorine precursors in the yangtze river delta region , china.  - science of the total environment.  1-10. 

steven soon-kai kong, joshua s.fu, xinyi dong, ming-tung chuang, maggie chel gee ooi, wei-syun huang, stephen m. griffith, shantanu kumar pani, neng-huei lin.  (2021).  sensitivity analysis of the dust emission treatment in cmaqv5.2.1 and its application to long-range transport over east asia.  - atmospheric environment.  1-16. 

nurul amirah isa, siti aekbal salleh, wan mohd naim wan mohd, maggie chel gee ooi, andy chan andmd amirul islam.  (2021).  impacts of lateral boundary condition resolution in tropical urban climate modelling for kuala lumpur.  - engineering journal.  165-175. 

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. 

norfazrin mohd hanif, nor syamimi sufiera limi hawari, murnira othman, haris hafizal abd hamid , fatimah ahamad, royston uning, maggie chel gee ooi, muhammad ikram a wahab, mazrura sahani, mohd talib latif.  (2021).  ambient volatile organic compounds in tropical environments: potential sources, composition and impacts - a review.  - chemosphere.  1-12. 

ooi, maggie chel gee, chuang, ming-tung, fu, joshua s., kong, steven s., huang, wei-syun, wang, sheng-hsiang, chan, andy, pani, shantanu kumar, lin, neng-huei.  (2021).  improving prediction of trans-boundary biomass burning plume dispersion: from northern peninsular southeast asia to downwind western north pacific ocean.  - atmospheric chemistry and physics.  12521-12541. 

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. 

mohd shahrul mohd nadzir, mohd zaim mohd nor, mohd fadzil firdzaus mohd nor, muhamad ikram a wahab,sawal hamid md ali, muhsin kolapo otuyo,mohd aftar abu bakar,lip huat saw,shubhankar majumdar,maggie chel ge.  (2021).  risk assessment and air quality study during different phases of covid-19 lockdown in an urban area of klang valley, malaysia.  - sustainability.  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. 

mingtung chuang, maggie chel gee ooi, nenghuei , joshua s. fu, chungte lee, shenghsiang wang, mingcheng yen, steven soon kai kong, weisyun huang.  (2020).  study the impact of three asian industrial regions on pm2.5 in taiwan and the process analysis during transport.  - atmospheric chemistry and physics.  14947-14967. 

li li, qing li, ling huang, qian wang, ansheng zhu, jian xu, ziyi liu, hongli li, lishu shi, rui li, majid azari, yangjun wang, xiaojuan zhang, zhiqiang liu, yonghui zhu, kun zhang, shuhui xue, maggie chel gee ooi, dongping zhang, andy chan.  (2020).  air quality changes during the covid-19 lockdown over the yangtze river delta region: an insight into the impact of human activity pattern changes on air pollution variation.  - science of the total environment.  1-11. 

mohd shahrul mohd nadzir,maggie chel gee ooi, kemal maulana alhasa, mohd aftar abu bakar, anis asma ahmad mohtar, mohd fadzil firdzaus mohd nor, mohd talib latif, haris hafizal abd hamid, sawal hamid md ali, noratiqah mohd ariff,johary anuar,fatimah ahama.  (2020).  the impact of movement control order (mco) during pandemic covid-19 on local air quality in an urban area of klang valley, malaysia.  - aerosol and air quality research.  1237-1248.