Natural Hazards, Год журнала: 2024, Номер unknown
Опубликована: Авг. 22, 2024
Язык: Английский
International Journal of Biometeorology, Год журнала: 2024, Номер 68(9), С. 1857 - 1870
Опубликована: Май 29, 2024
Язык: Английский
Процитировано
4
Weather and Climate Extremes, Год журнала: 2024, Номер 45, С. 100704 - 100704
Опубликована: Июнь 15, 2024
Nigeria's growing population faces an increasing heat burden with potential health risks. The Universal Thermal Comfort Index (UTCI) links outdoor conditions and human well-being but lacks comprehensive insitu data in developing regions like Nigeria. ERA5-HEAT reanalysis offers a solution gridded UTCI MRT data, validation is crucial. Thus, this study evaluates the against from nine Nigerian weather stations analysed spatio-temporal patterns of stress trends. Results showed that demonstrated reasonable statistical performance captured temporal characteristics across climatic zones. Seasonal variations show levels "slightly cold" to "moderate" at 0600 LST "very strong" 1500 LST. Geographical consistency exists within each season over decades, critical period during March-May. Additionally, there has been spatial expansion areas experiencing higher country. Latitudinally, stable exist decades for season. Seasons distinct values, LST, more variability category transitions occur along latitudes. Furthermore, results indicate significant positive trends occasional non-significant negative 40-year period. Notably, Guinea Sahel exhibit relatively than Sudan region all seasons, whereas high are prominent DJF MAM indicating increased peak seasons. These deviations associated adverse effects on health, including mortality rates.
Язык: Английский
Процитировано
4
International Journal of Climatology, Год журнала: 2025, Номер unknown
Опубликована: Янв. 15, 2025
ABSTRACT The study explores variability and dynamical characteristics of heatwaves during March–June for 1990–2020 over India. Normalised T max anomaly is used to identify different heatwave spells in vulnerable regions North‐central India (NCI) Southeast coast (SECI) using Meteorological Department (IMD, 1° × resolution) observations, Indian Monsoon Data Assimilation Analysis (IMDAA, 0.12° 0.12°), ECMWF Reanalysis v5 (ERA5, 0.25° 0.25°). Results highlight that IMDAA exhibited a total 202 days (181 days) duration NCI while ERA5 132 (89 days), respectively, compared with those IMD (195 163 days). primary periods (10 April 20 June) SECI region (1 May 10 are well captured by IMDAA, unlike ERA5. average length the 7.8, 7.5, 7.76 (8.15, 7.72, 6.1 IMD, ERA5, respectively. high heat stress more frequent than common May–June (May only), as seen (ERA5). middle upper‐level anticyclone stronger heatwaves. Heat advection 850‐hPa north‐westerlies (~10 ms −1 ) abates sea breeze coastal region, aiding longer region. Ascending motion induced surface heating confined lower levels due subsidence anomalous anticyclone, stagnating higher temperatures atmosphere, depicting dome. slightly (31°C–39°C) (30°C–37°C). However, double moist dome has witnessed conditions NCI. Higher relative humidity contributed maritime winds from Bay Bengal Arabian Sea, soil moisture, so forth. highlights value atmospheric moisture differentiating conditions.
Язык: Английский
Процитировано
0
Dynamics of Atmospheres and Oceans, Год журнала: 2025, Номер unknown, С. 101537 - 101537
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
0
International Journal of Climatology, Год журнала: 2025, Номер unknown
Опубликована: Март 23, 2025
ABSTRACT Evaluating long‐term changes in thermal comfort can be useful for considering measures against thermal‐related health risks. In this study, spatio‐temporal comfort, using the Universal Thermal Climate Index (UTCI), were calculated from observations at 140 weather stations across Japan 1980–2020 period. To derive mean radiant temperature (MRT) values not readily measured but required estimation of UTCI, a machine‐learning model (XGBoost) was developed. The uses station observations, coarse‐resolution radiation data ERA‐5 reanalyses dataset, and available globe measurements as predictors. trend UTCI throughout summer found to significantly positive. Meanwhile, negative trends located northern areas during winter. This suggests that only heat stress risks also cold should given careful attention colder regions. Lastly, comparison estimated with prefecture‐level daily summertime heat‐stroke reveals threshold above which cases rise drastically varies distinctly between warm regions, latter having lower threshold. These findings could contribute attributable climate change better planning climate‐change‐resilient cities.
Язык: Английский
Процитировано
0
Ecological Informatics, Год журнала: 2025, Номер unknown, С. 103156 - 103156
Опубликована: Апрель 1, 2025
Язык: Английский
Процитировано
0
Physics and Chemistry of the Earth Parts A/B/C, Год журнала: 2024, Номер 136, С. 103693 - 103693
Опубликована: Авг. 10, 2024
Язык: Английский
Процитировано
2
Climate Dynamics, Год журнала: 2023, Номер 62(3), С. 1715 - 1728
Опубликована: Ноя. 7, 2023
Язык: Английский
Процитировано
5
International Journal of Environmental Health Research, Год журнала: 2023, Номер 34(9), С. 3112 - 3125
Опубликована: Дек. 23, 2023
In this study, we investigated factors related to subjective outdoor thermal comfort in the Ancient Ming Dynasty Walled City Xi'an, China. Environmental data were collected from study sites by microclimate monitoring. Survey locations, demographics, psychological characteristics, sensation vote (TSV), and (TCV) 639 individuals a questionnaire survey. Generalized linear regression analysis path used understand associations between TSV, environmental factors, TCV. We found that green space higher age, greater well-being satisfaction associated with increased The universal climate index was TCV, association could have been affected individual's state. Our findings suggest had non-negligible effects on of located an open urban area historical cultural significance.
Язык: Английский
Процитировано
3
Research Square (Research Square), Год журнала: 2023, Номер unknown
Опубликована: Фев. 2, 2023
Abstract During pre-monsoon season, the Northwest Himalayas region receives significantly larger seasonal proportion of precipitation than pan Indian average which makes it vulnerable to ramifications extreme precipitation. Hence, this study investigates variations during over for period 1979–2018. It has been observed that, since 1998, mean baseline shifted downwards, indicating a bi-decadal transition. Notably, fallen 50% pre-1998 levels with month March being dominant contributor towards overall decline. Consequent analysis revealed that western disturbances (WDs) are primarily responsible in area season as local atmospheric conditions not conducive any other source moisture and However, strength zonal transport WDs aided vorticities seen be weakening post 1998 also interestingly coincides strongest El Nino phase on record start negative PDO cycle. As result, role global teleconnections is investigated, concluded after have changed circulation pattern, causing air subsidence (stronger stability) lower-level convergence westerly component transport; leads decline recent decades. Following hypothesis was further verified using threefold process involving change patterns, cause-effect cluster finally by case comparisons.
Язык: Английский
Процитировано
1