Annual climate summary 2023
The report discusses the climate condition over Indian region during the year 2023. Notably, global temperatures soared to exceptionally high levels during this period (WMO.No.1347). The India Meteorological
Rainfall
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Concern over Brihanmumbai Storm Water Drains project
central aid has finally been approved to revamp Mumbai's stormwater drainage system by 2011. But experts are sceptical whether the project is still relevant. The Brihanmumbai Storm Water Drains
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Flood fury in Rajasthan again
rains caused widespread destruction in Rajasthan's Jodhpur, Pali and Banswara districts, claiming more than 20 lives in the first week of July. Last year too the showers wreaked havoc in the
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Monsoon floods devastate South Asia
Floods in the mountain kingdom of Nepal? It sounds unlikely, but Nepal has a low-lying region called Terai, and much of it has been submerged in the past week following intense rains during the south Asian monsoon. Even more surprisingly, Nepal is blaming its downstream neighbour, India, for the floods.
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No tell tale
Farmers have natural indicators to predict rainfall. And researchers of Gujarat Agricultural University in an experiment found that farmers are more often than not proved correct. In an initiative,
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For a rainy day
The onset of the monsoon is the crucial determinant for majority of farmers in rainfed areas of the country. With no access to irrigation or state support they have developed complex yet fascinating
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Modeling and understanding the relationship between vegetation and rainfall of a tropical watershed using remote sensing data
A model is developed to understand the relationship between satellite-derived NDVI and rainfall data in a large tropical catchment. Two Fourier-based modeling techniques with a seasonal component, viz. a seasonal model (SM) and a linear perturbation model (LPM) are tested, and their performance in reproducing the observed NDVI was evaluated. The methodology makes use of 15 years of 10-day composite time series data of rainfall and NDVI, which is estimated from NOAA-AVHRR data, both of which constitute concurrent data from 1982-96.
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Water balance studies and strategies for combating water deficit in Upper Kolab catchment of Orissa
Analysis of water balance for Upper Kolab catchment was done according to Thornthwaite book keeping technique for six stations located within the catchment and for the entire catchment for the normal climatic year. On annual basis the catchment has a water need, rainfall, actual evapotranspiration, water surplus and water deficit of 1703.7 mm, 1479.82 mm, 1003.13 mm, 476.69 mm and 700.56 mm respectively. There is a water surplus from July to October and water deficit from November to May. The surplus months of June and part of July contribute to recharge the soil moisture deficit.
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The shrinking Indian summer monsoon
In the backdrop of a changing climate, this report investigate whether the Indian summer monsoon is changing either in terms of duration or spatial coverage. Such an analysis specifically for the continental Indian region has both conceptual and societal implications, and has been lacking.
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How much more rain will global warming bring?
Climate models and satellite observations both indicate that the total amount of water in the atmosphere will increase at a rate of 7% per kelvin of surface warming. However, the climate models predict
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Vulnerabilities and responses to climate change for Dhaka
The relationship between climate change and cities is complex. City-based activities contribute significant amounts of greenhouse gases and, simultaneously, are often more vulnerable to the impacts of