Publications by authors named "Pratheesh C Mammen"
The spatial and temporal dynamics of daily ultraviolet index (UVI) for a period of 18 years (2004-2022) over the Indian state of Kerala were statistically characterised in the study. The UVI measurements used for the study were derived from the ultraviolet-B (UVB) irradiance measured by the Ozone Monitoring Instrument (OMI) of the AURA satellite and classified into different severity levels for analysis. Basic statistics of daily, monthly and seasonal UVI as well as Mann-Kendall (MK) statistical trend characteristics and the rate of change of daily UVI using Theil-Sen's slope test were also evaluated.
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- Dengue fever, primarily transmitted by mosquitoes, has significantly impacted Kerala, especially in Thiruvananthapuram, prompting a study to identify risk zones using analytical methods like AHP and F-AHP.
- The study incorporates various geo-environmental and demographic factors, utilizing software tools like ArcGIS and ERDAS to create detailed risk zone maps, which are then validated against actual dengue case data.
- The results show that the F-AHP method outperforms AHP in predicting risk zones, with 82.87% of cases occurring in high-risk areas, highlighting the need for effective public health measures to combat dengue spread.
Global COVID-19 Transmission and Mortality-Influence of Human Development, Climate, and Climate Variability on Early Phase of the Pandemic.
Geohealth
October 2021
Many of the respiratory pathogens show seasonal patterns and association with environmental factors. In this article, we conducted a cross-sectional analysis of the influence of environmental factors, including climate variability, along with development indicators on the differential global spread and fatality of COVID-19 during its early phase. Global climate data we used are monthly averaged gridded data sets of temperature, humidity and temperature anomaly.
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