A5055128302- Meteorological Phenomena and Simulations
- Climate variability and models
- Tropical and Extratropical Cyclones Research
- Precipitation Measurement and Analysis
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Sperm and Testicular Function
- Sexual Differentiation and Disorders
- Climate change impacts on agriculture
- Fire effects on ecosystems
- Demographic Trends and Gender Preferences
- Radio Wave Propagation Studies
- Atmospheric aerosols and clouds
- Prenatal Screening and Diagnostics
- Chromosomal and Genetic Variations
- Reproductive Biology and Fertility
- Hydrology and Drought Analysis
- Hydrology and Watershed Management Studies
- Nonlinear Photonic Systems
- Atmospheric chemistry and aerosols
- Lightning and Electromagnetic Phenomena
- Advanced Fiber Laser Technologies
- Plant Water Relations and Carbon Dynamics
- Nonlinear Waves and Solitons
Cotton University
2010-2025
All India Institute of Medical Sciences
2011
Flash floods associated with extreme rain events are a major hydrological disaster in the northeast Indian (NEI) region because of unique topographic features as well increased frequency occurrence such events. Knowledge spatiotemporal distribution these and an understanding factors responsible for them, therefore, would be immensely useful appropriate preparedness. Using daily rainfall data from 15 stations over 32 years (1975–2006), it is shown that largest not during premonsoon...
Abstract In operational meteorology, forecasting heavy rainfall (HRF) events has been a long‐standing challenge in India. This is especially true certain regions where the physical geography lends itself to creation of such HRF events. Northeast India (NEI) one region within Asian monsoon zone, which receive very during pre‐monsoon and summer season summer–autumn transition month October. These cause flooding, damage crops bring life standstill. present work, characteristics NEI are studied....
<title>Abstract</title> While the explosive increase in extreme humid heat stress exposure from 2000’s over South Asian monsoon region is challenging human adaptability leading to productivity and mortality loss, factors responsible remain poorly constrained. Here, we unravel that disruptive regional climate change of decadal-mean maximum Humidex exceeding 45°C be primary cause. Over Northeast India, it results heat-stress during season rising fourfold 80 days or 800 ± 278 hours makes...
Abstract An iconic feature of the Indian Summer Monsoon Rainfall (ISMR), a longer than June–September rainy season over Northeast India (NEI), while much shorter one northwest is expected to be altered by climate change but an objective definition length monsoon (LRS) NEI lacking. Here, defining LRS objectively NEI, we show that El Niño and Southern Oscillation (ENSO) primary driver LRS, rainfall during poorly correlated with ENSO. In contrast significant decreasing trend LRS-rainfall...
Abstract In Assam, local severe convective storms (LSCS) are recognized as exceptionally powerful and destructive meteorological events resulting in both death loss of property, well livelihood. A valuable aid to assessing managing LSCS lies a reliable database historical storms. this paper, we investigate the temporal spatial characteristics state Assam lying North Eastern Province India provide climatology for state, with respect to: distribution, storm types, frequency, seasonality, time...
Abstract Acknowledging the prolonged duration of rainy season in Northeast India (NEI) compared to Central India, official onset Indian summer monsoon over NEI is traditionally marked around 5 June, with May rainfall categorized as ‘pre‐monsoon’. However, our study reveals that occurs active/break spells driven by persistent synoptic‐scale systems, contributing a significant heat source during this period. Through an objective analysis, we determine climatological ‘onset’ actually 18 May,...
The near surface rain (NSR) dataset of the Tropical Rainfall Measurement Mission (TRMM) Precipitation Radar (PR) 2A25 V7 was validated using 36 tipping bucket raingauges installed over northeastern Indian subcontinent, which correspond with center Asian summer monsoon. This raingauge network covers Brahmaputra flood plains and mountainous areas, including Meghalaya Plateau, is one wettest places in world. We analyzed data from 2004 to 2013, obtained 28,207 TRMM/PR-raingauge matchups 2,170...
Corneal dystrophies are defined as a group of inherited corneal disorders characterized by opacification the cornea.Initial classification was based on layer cornea involved but with advent better technology, larger picture has evolved that includes both phenotypic and genotypic variants.With evolving knowledge, revised been proposed International Committee for Classification Dystrophies (IC3D).This taken into account clinical, histologic genetic basis disease, integrating them one.Our...
Abstract Persisting wet events (PWEs) and persisting dry (PDEs) over central India (CI), defined by rain spells lasting for 5 days or more above below climatology, respectively, represent an important component of the Indian summer monsoon’s intraseasonal variability. However, half such PREs PDEs that do not overlap with conventionally “active” “break” CI while contributing about 20% to seasonal mean remained poorly studied. Here we find that, in contrast abundant longer (>5 days) CI,...
The Y-chromosome harbors about 107 genes and pseudo genes. Microdeletions of the long arm are most common mutations in infertile males, where they involve one or more “azoospermia factors” (AZF a, b, c). 100 consecutive men were studied for AZF microdeletions by isolating Genomic DNA from peripheral blood Polymerase Chain Reaction was carried with Genes: RBMY [RNA-binding motif (RBM), Y chromosome], BPY-2 (Testis-specific basic protein 2), STS markers: SY-84, SY-254. Out five males exhibited...
Abstract An iconic aspect of the Indian Summer Monsoon Rainfall (ISMR), a rainy season that lasts longer than June to September over Northeast India (NEI) and considerably shorter Northwest India, is expected be significantly altered by climate change. The lack physically based objective definition monsoon NEI introduces significant uncertainty in impact assessment, variability, predictability studies ISMR. Here, we objectively define ‘Length Rainy Season’ (LRS) for show El Nino Southern...
Abstract The Length of Rainy Season (LRS) in Northeast India (NEI) is longer than that over other parts the country and contributes to seasonal quantum rainfall, a hallmark Indian Summer Monsoon. Low-resolution global general circulation models (GCMs) underestimate rainfall annual cycle NEI due unresolved regional orography requiring downscaling with Coordinated Regional Climate Downscaling Experiment (CORDEX) for South Asia. However, uncertainty CORDEX simulations its intensity biases...
Average lightning flash rate density (LFD) values for North East India (NEI) are analyzed the 16-years (1998–2013) period based on high resolution TRMM LIS data. The number of strokes most active from March to October with highest happening during months April and May, monsoon witnessing maximum spatial shifting plains area. After October, LFD begin decrease across entire region. a value 56.65 flashes km-2 year-1, observed along an escarpment in southern parts Meghalaya plateau. minimum is...
&lt;p&gt;The near surface rain (NSR) dataset of the Tropical Rainfall Measurement Mission (TRMM) Precipitation Radar (PR) and Global (GPM) Dual (DPR) was validated using around 40 tipping bucket raingauges installed over northeastern Indian subcontinent, disdrometers in Meghalaya Plateau, India. The comparison during 2006-2014 showed significant overestimation TRMM PR Assam Bengal plains pre-monsoon season (March to May), underestimation subcontinent monsoon (June September)....