{"title":"The Climatological Withdrawal Process of the South Asia High During the Transition From Late Summer to Winter","authors":"Xu Xue, Wen Chen","doi":"10.1007/s13143-026-00439-6","DOIUrl":"10.1007/s13143-026-00439-6","url":null,"abstract":"<div><p>The late-summer-to-winter transition is a critical phase in the adjustment of atmospheric circulation, characterized by a shift in circulation patterns from summer to winter. This study examines the climatological withdrawal process of the South Asian High (SAH) and the factors that influence its dynamics during this transition. Analysis reveals that the SAH remains stable over the Tibetan Plateau (TP) until the fourth pentad of August, after which a notable shift occurs. From the fifth pentad in August to the second pentad in September, the SAH undergoes a southward displacement. From the third to the sixth pentads of September, the ridge line retreats and stabilizes over the southern Iran-TP region. In the following phase, the SAH shifts eastwards, reaching the Indo-China Peninsula (ICP) between the first and fourth pentads of October, before ultimately retreating to the ocean. The weakening and eventual dissipation of the Somali jet stream contributes to a reduction in convective activity. This reduction is exacerbated further by the weakening of westerly winds in the northern tropical Indian Ocean, which diminishes the moisture fluxes that were previously directed northwestwards towards the western and northern Bay of Bengal (BOB). Consequently, an active convection declines. The subsequent reduction in lower-tropospheric apparent heating over the TP triggers the southward movement of the SAH. This process is sustained by the continued decrease in heating over the BOB. Furthermore, enhanced apparent heating over the ICP and the northwestern tropical Pacific, particularly after the second pentad of October, likely facilitates the eastward retreat of the SAH, ultimately leading to its withdrawal over the ocean.</p></div>","PeriodicalId":8556,"journal":{"name":"Asia-Pacific Journal of Atmospheric Sciences","volume":"62 2","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147829219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Comprehensive Comparison on Potentially Toxic Elements Between Sandstorm PM2.5 and Haze PM2.5","authors":"Jiaojiao Xie, Yixian Long, Songyao Liu, Yiran Fu, Chun-Gang Yuan, Mingyu Li, Shuang Deng","doi":"10.1007/s13143-026-00436-9","DOIUrl":"10.1007/s13143-026-00436-9","url":null,"abstract":"<div>\u0000 \u0000 <p>The increasing frequency of spring sandstorms in northern China in recent years has underscored the urgent need to investigate the characteristics of potentially toxic elements (PTEs) in sandstorm particles to assess their potential health risks. This study examined PTEs (Cd, Cr, Cu, Pb, Sb, Zn, As, Se) in sandstorm-associated PM<sub>2.5</sub> (D-PM<sub>2.5</sub>), comparing them with those in haze PM<sub>2.5</sub> (H-PM<sub>2.5</sub>) and severe haze PM<sub>2.5</sub> (SH-PM<sub>2.5</sub>). Bioaccessibility and health risks of PTEs were systematically evaluated. The Hybrid Single Particle Lagrangian Integrated Trajectory Model (HYSPLIT) was utilized to trace the transport pathways of PM<sub>2.5</sub>. Results showed that Zn, Cu, Pb, As, Sb, and Cr in D-PM<sub>2.5</sub> were 3–10 times higher than those in H-PM<sub>2.5</sub> but 2–20 times lower than in SH-PM<sub>2.5</sub>. Notably, As and Cr exhibited significant enrichment in D-PM<sub>2.5</sub>, primarily originating from Mongolia, Inner Mongolia, and Shanxi Province through long-range transport. In contrast, Se was highly enriched in H-PM<sub>2.5</sub> and mainly from local emissions. The distributions of PTEs in bioaccessible fraction were significantly lower (<i>p</i> < 0.05) but in residual fraction were significantly higher (<i>p</i> < 0.05) in D-PM<sub>2.5</sub> compare to H-PM<sub>2.5</sub> excluding Se, Pb, and Cd. As posed the highest toxicity in H-PM<sub>2.5</sub> for both non-carcinogenic and carcinogenic risks, whereas Cr was the most toxic element in D-PM<sub>2.5</sub> for carcinogenic risk. The inhalation-based health risks of PTEs in D-PM<sub>2.5</sub> were lower than these in SH-PM<sub>2.5</sub> but higher than these in H-PM<sub>2.5</sub>, indicating that D-PM<sub>2.5</sub> warrants health concern.</p>\u0000 </div>","PeriodicalId":8556,"journal":{"name":"Asia-Pacific Journal of Atmospheric Sciences","volume":"62 2","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147737408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Minwoo Park, Younha Kim, Youjung Jang, Hyejung Hu, Satoru Chatani, Shuxiao Wang, Zbigniew Klimont, Jung-Hun Woo
{"title":"An Integrated Framework for MOSAIC-AQNEA Emission Inventory Development in Northeast Asia","authors":"Minwoo Park, Younha Kim, Youjung Jang, Hyejung Hu, Satoru Chatani, Shuxiao Wang, Zbigniew Klimont, Jung-Hun Woo","doi":"10.1007/s13143-026-00434-x","DOIUrl":"10.1007/s13143-026-00434-x","url":null,"abstract":"<div>\u0000 \u0000 <p>Air pollutant emissions in Northeast Asia play a critical role in regional air quality and transboundary pollution. This study presents the development of the MOSAIC-AQNEA emission inventory framework, integrating country-specific emission inventories for six countries: China, South Korea, Japan, North Korea, Mongolia, and the Asian part of Russia. A mosaic approach was applied to combine nationally developed inventories under a unified sectoral classification scheme. The inventory includes major seven pollutants (SO<sub>2</sub>, NOₓ, PM<sub>10</sub>, PM<sub>2.5,</sub> NH<sub>3</sub>, NMVOCs and CO) for the base year 2019. While PM<sub>10</sub> and PM<sub>2.5</sub> are explicitly distinguished in the emission inventory and model processing, they are occasionally referred to collectively as PM in the text for brevity. To support air quality modeling, the compiled inventories were processed using the SMOKE-Asia system to generate model-ready inputs. The resulting gridded emissions provide a consistent, high-resolution dataset representing regional emission characteristics. Analysis by sector, pollutant, and intensity metrics (Emissions per GDP and per Population) revealed distinct structural differences among countries, reflecting variations in energy systems, industrial activities, and socioeconomic conditions. This study provides a comprehensively integrated, model-ready emission inventory framework that consistently integrates national inventories across Northeast Asia under a unified processing structure. The framework ensures cross-country comparability through systematic sector mapping, bottom-up emission based downscaling, and consistent chemical speciation. The resulting dataset offers a transparent and directly usable emission input for regional air quality modeling and policy-relevant assessments.</p>\u0000 </div>","PeriodicalId":8556,"journal":{"name":"Asia-Pacific Journal of Atmospheric Sciences","volume":"62 2","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s13143-026-00434-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147642984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Influences of Environmental States on the Rapid Growth of Tropical Cyclone Outer Size over the Western North Pacific","authors":"Jinnan Yuan, Mingsen Zhou, Huijun Huang, Yong Zhu","doi":"10.1007/s13143-025-00427-2","DOIUrl":"10.1007/s13143-025-00427-2","url":null,"abstract":"<div><p>In this study, the 95th percentile of 24-h change rate of the radius of the 17 m s<sup>−1</sup> winds (R17) was used to define the rapid growth (RG) of tropical cyclone (TC) outer size. The statistical results show that the environmental sea surface temperature (SST), specific humidity (SH), temperature (<i>T</i>) and wind fields (WND) of the RG cases are significantly different from those of the non-rapid change cases over the western North Pacific during 2004–2022. The influences of the environmental SST, SH, <i>T</i> and WND on the RG of TC R17 were investigated by adopting high-resolution HWRF model and a series of idealized numerical experiments. The simulation results show that the largest relative contribution to the RG of TC R17 is from environmental WND (accounts for 27.4%), followed by environmental SH (accounts for 6.3%) and SST (accounts for 1.9%). The relative contribution of the environmental <i>T</i> to the RG of TC R17 is negative (−4.4%), which is unfavorable for the RG of TC R17. Then, a schematic diagram of the possible main physical processes that the environmental SST, SH, <i>T</i> and WND affect the RG of TC R17 was summarized. The environmental SST, SH, <i>T</i> and WND may ultimately affect the RG of TC R17 mainly by increasing or reducing surface total precipitation, warm temperature anomaly, upward vertical velocity and inward radial wind within the TC circulation.</p></div>","PeriodicalId":8556,"journal":{"name":"Asia-Pacific Journal of Atmospheric Sciences","volume":"62 2","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147561312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sang-Hun Park, Uju Shin, Sehyun Lee, Tae-Young Lee
{"title":"Publisher Correction: Synoptic-Scale Environment for Heavy Rainfall Over the Korean Peninsula During the Changma (late June through mid-July) and August","authors":"Sang-Hun Park, Uju Shin, Sehyun Lee, Tae-Young Lee","doi":"10.1007/s13143-026-00431-0","DOIUrl":"10.1007/s13143-026-00431-0","url":null,"abstract":"","PeriodicalId":8556,"journal":{"name":"Asia-Pacific Journal of Atmospheric Sciences","volume":"62 2","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147441129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Integrated Ground–Satellite–Aircraft Analysis of Long-Range Transport from China in the Korean Peninsula During the ASIA-AQ Campaign","authors":"Jinsoo Park, Joon-Young Ahn, Seokwon Kang, Taehyoung Lee, Sea-Ho Oh, Min-Suk Bae","doi":"10.1007/s13143-026-00433-y","DOIUrl":"10.1007/s13143-026-00433-y","url":null,"abstract":"<div><p>Long-range transport (LRT) often drives episodic fine particulate matter (PM<sub>2.5</sub>) pollution in the Republic of Korea. In this study, an LRT-driven episode that occurred from March 2 to 4, 2024 was examined during the ASIA-AQ campaign in Seoul (January 23 to March 12, 2024), using nationwide monitoring, satellite observations, trajectory analysis, and aircraft measurements over the Yellow Sea. During the LRT, PM<sub>2.5</sub> increased to 49.43 µg/m<sup>3</sup>, and the fraction attributable to long-range transport accounted for approximately 56% of the observed PM<sub>2.5</sub>. The significant increases in nitrate, sulfate, and ammonium indicate the import of regionally aged aerosols and their precursors. Transport diagnostics, utilizing ERA5 winds and HYSPLIT backward trajectories with concentration-weighted trajectory analysis, as well as GK-2B GEMS aerosol optical depth, pointed to inflow from eastern China and the North China Plain. Additionally, independent aircraft measurements using PTR-ToF-MS onboard a 1900D platform detected heightened low-altitude benzene levels over the Yellow Sea during the LRT, which aligns with transboundary combustion influences. Elevated CO/CO<sub>2</sub> ratios further supported the presence of aged inflow. Overall, these multi-platform observations demonstrate that LRT can significantly overshadow typical domestic conditions, leading to PM<sub>2.5</sub> compositions rich in nitrate, sulfate, and ammonium, which are chemically processed. This underscores the necessity for coordinated regional air quality management and international collaboration to mitigate cross-border pollution and its associated health risks in Northeast Asia.</p></div>","PeriodicalId":8556,"journal":{"name":"Asia-Pacific Journal of Atmospheric Sciences","volume":"62 2","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147341314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Introducing Double-Moment Warm Rain Physics into the Goddard 4ICE Microphysics Scheme","authors":"Kao-Shen Chung, Yu-Jyun Liou, Cheng-Rong You, Zhao-Cheng Zeng, Pay-Liam Lin, Donghai Wang, Wei-Kuo Tao, Stephen Lang, Takamichi Iguchi, Adrian Loftus, Jiun-Dar Chern","doi":"10.1007/s13143-026-00430-1","DOIUrl":"10.1007/s13143-026-00430-1","url":null,"abstract":"<div><p>In this study, a new double-moment warm rain Goddard 4ICE scheme (GCEDM) is developed based on the Goddard 4ICE single-moment (GCESM) scheme and then tested using idealized 2D squall line and 3D supercell simulations. The addition of the total number concentrations for cloud water (<span>(:{N}_{TC})</span>) and rainwater (<span>(:{N}_{TR})</span>) enables this new scheme to simulate more diverse raindrop size distributions, making it more realistic. GCEDM has similar overall thermal and dynamic characteristics to GCESM but produces higher evaporation rates, predicted particle number concentrations, and mass mixing ratios than GCESM, leading to stronger cold pools than with GCESM. In addition, comparisons are made versus the Weather Research and Forecasting Model Double-Moment Microphysics 7-class scheme (WDM7), which was also improved from a single-moment 4-class ice scheme to a double-moment warm-rain scheme. WDM7 also shows a stronger cold pool, but the system characteristics and microphysical processes are quite different from the single-moment version of this scheme.</p></div>","PeriodicalId":8556,"journal":{"name":"Asia-Pacific Journal of Atmospheric Sciences","volume":"62 2","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s13143-026-00430-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147339663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Identifying Major CO2 and CH4 Emission Sources with the STILT Model in the Seoul Metropolitan Area During Winter 2024, Including the ASIA-AQ Campaign","authors":"Hyeongseok Choi, Jongbyeok Jun, Yongjoo Choi","doi":"10.1007/s13143-025-00428-1","DOIUrl":"10.1007/s13143-025-00428-1","url":null,"abstract":"<div><p>To investigate urban enhancements of greenhouse gases (GHGs), CO<sub>2</sub> and CH<sub>4</sub> were measured in Seoul from January to March 2024 including the Airborne and Satellite Investigation of Asian Air Quality (ASIA-AQ) campaign. Mean concentrations of both CO<sub>2</sub> and CH<sub>4</sub> exceeded those reported for other major urban cities during winter. Identified four high-concentration episodes occurred under elevated CO and low wind speeds, consistent with suppressed ventilation after long-range transport. The footprint analysis indicated that the contribution of South Korea was dominant in most episodes indicating mainly influenced by local emission sources; however, episode 4 showed a relatively larger upwind (other) contribution suggesting the long-range transport. The contribution of emission sectors indicated that buildings/heating and power generation dominated ΔCO<sub>2</sub> (subtracted by background concentration) variability, whereas waste management led ΔCH<sub>4</sub>, with secondary contributions from agriculture, buildings, and fuel exploitation. Despite different major emission sectors, ΔCO<sub>2</sub> and ΔCH<sub>4</sub> converged with a narrow range with high correlation coefficient (R), reflecting co-located anthropogenic sources during wintertime. A diurnal variation of both ΔCO<sub>2</sub> and ΔCH<sub>4</sub> peaked in the morning, then reached local minimum in mid-afternoon with increasing PBL height. However, the diurnal variation of the simulated ΔCO<sub>2</sub> and ΔCH<sub>4</sub> from the Stochastic Time-Inverted Lagrangian Transport (STILT) model showed late-afternoon minimum compared to measured values because the STILT overestimates the afternoon vertical gradient of CO<sub>2</sub>, likely owing to biases in diagnosed PBL height. This approach might provide scientific evidence to policy makers to attain the carbon neutral by suitable regulation for major emission sources when more dense spatial resolution of bottom-up inventory and meteorological fields are available.</p></div>","PeriodicalId":8556,"journal":{"name":"Asia-Pacific Journal of Atmospheric Sciences","volume":"62 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147335809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"An Evaluation of the Current Short-term PM2.5 Forecasting Accuracy in Seoul","authors":"Ba-Da Yeon, Seung-Bu Park, Jihoon Seo","doi":"10.1007/s13143-025-00426-3","DOIUrl":"10.1007/s13143-025-00426-3","url":null,"abstract":"<div>\u0000 \u0000 <p>The accuracy of PM<sub>2.5</sub> forecasts in Seoul from 2019 to 2023 was assessed using multiple methods. Daily short-term PM<sub>2.5</sub> forecasts, which were provided as four categories (<i>good</i>, <i>moderate</i>, <i>bad</i>, and <i>very bad</i>), were directly compared with the corresponding PM<sub>2.5</sub> observation data. Although the probability of detection for days with high PM<sub>2.5</sub> concentrations increased, a simultaneous rise in the false alarm rate resulted in no improvement in the total accuracy and F1-score. To analyze these trends in more detail, the forecast accuracy was further examined based on the PM<sub>2.5</sub> categories. The results showed an annual improvement of 3.65% in the accuracy for the <i>bad</i> category. An analysis based on the announcement time also indicated an increase of over 20% in the accuracy for the <i>bad</i> category for next-day and day-after forecasts. The confusion matrices of forecasted and observed PM<sub>2.5</sub> categories confirmed this improvement, which was primarily due to a reduction in the number of instances where the <i>moderate</i> category was forecasted as <i>bad</i>. However, the accuracy for the <i>good</i> category showed no significant change and that for the <i>moderate</i> category even declined. These findings highlight the importance of category-specific evaluation in air quality forecasting and improving the forecast accuracy, particularly for the <i>good</i> and <i>moderate</i> categories. The reliability of forecasts and their policy relevance may be improved by utilizing these insights and addressing temporal and spatial limitations.</p>\u0000 </div>","PeriodicalId":8556,"journal":{"name":"Asia-Pacific Journal of Atmospheric Sciences","volume":"62 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146027114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Lyndon Mark P. Olaguera, John A. Manalo, Jun Matsumoto
{"title":"The Influence of the Quasi-BiWeekly Oscillation on the Onset, Monsoon Breaks, and Rainfall Extremes During the Southwest Monsoon Season in the Philippines","authors":"Lyndon Mark P. Olaguera, John A. Manalo, Jun Matsumoto","doi":"10.1007/s13143-025-00429-0","DOIUrl":"10.1007/s13143-025-00429-0","url":null,"abstract":"<div><p>This study investigates the influence of the Quasi-BiWeekly Oscillation (QBWO) on the onset, monsoon breaks, and extreme rainfall events in the Philippines during the southwest monsoon season from 1980 to 2019. Findings show that the occurrence of extreme rainfall events over the Philippines follows the northward to northwestward movement of QBWO-related convective anomalies. These events initially appear in Mindanao and Visayas (Phase 5), then shift toward Luzon (Phases 7–8), and may persist along Luzon’s western coast up to Phase 2. The contribution of tropical cyclones (TCs), low-pressure systems (LPSs), and other disturbances to extreme rainfall was also assessed. Although their percentage contribution to the total extreme rainfall varies substantially across stations, their impacts are more apparent in Phase 6, coinciding with northward/northwestward propagation of the convective anomalies of the QBWO towards the Philippines. Monsoon breaks, which is defined as the period when the average rainfall across the western coastal stations in Luzon Island decreases below 5 mm day<sup>-1</sup> for at least three consecutive days, also show distinct QBWO-phase preferences such that short to medium breaks are more frequent in Phases 3–5, coinciding with the movement of the anticyclonic anomaly of the QBWO from the South China Sea toward East Asia in these phases. In contrast, longer breaks occur more frequently in Phases 4–6 and may persist until Phase 7, when the northeasterlies at the northern flank of the cyclonic circulation anomaly of the QBWO weaken the southwest monsoon. The southwest monsoon onset in the Philippines typically begins during Phase 1 and Phases 6–8. Notably, about 82% of monsoon onset events occurred during these phases when the QBWO amplitude exceeded 0.5, suggesting that a real-time QBWO index could aid in monitoring the monsoon onset.</p></div>","PeriodicalId":8556,"journal":{"name":"Asia-Pacific Journal of Atmospheric Sciences","volume":"62 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145983386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}