Hydrology and Climate Change

27th Feb 2021: Case Studies

The ‘megaberg’ A68 was twice the size of Luxembourg. It has completely melted this year.

Learn more about why melting glaciers are a serious problem:
http://ow.ly/AZo850I44NW

Earth's Water Cycle Is Changing Dramatically, And Much Faster Than We Predicted

"Freshwater cycles from ocean to air to clouds to rivers and back to the oceans. This constant shuttling can give us the illusion of certainty. Freshwater will always come from the tap. Won't it?

Unfortunately, that's not guaranteed. Climate change is shifting where the water cycle deposits water on land, with drier areas becoming drier still, and wet areas becoming even wetter."

Software could help to save up to 80 per cent of water used on UAE farms

"The UAE's farmers can now use new software that helps to plan crop planting and also calculate how much water their land will need over a year.

A study carried out over many years to trace the flow of sap in date palm trees showed that farmers are using nearly three times as much water as they need to irrigate their plants.

It found that farmers typically irrigate each tree with about 300 litres of water a day.

However, by measuring the amount of sap flowing in the trunk of a date palm, researchers found they could cut that to 180 litres a day during the summer, and to as little as 60 to 80 litres in winter. This would save up to 80 per cent of the water used on the country's farms."

One Woman’s Mission to Fight Water Scarcity in Africa | Earth.Org - Past | Present | Future

"Dr. Sónia Santos Assunção, an experienced geophysicist with extensive experience in soil assessment, first successfully carried out Geophysical exploration to detect underground water in Ghana in 2016 with the support of Geo Analysis that provided the equipment, and given the straight-forward applicability and efficiency of the technologies she used, she decided to extend her scientific project beyond one country. The geophysicist will soon embark on a one-year journey across the African continent, travelling 24,000km to cross a total of 21 countries – from Cairo to Cape Town and from Cape Town to Tunisia – to evaluate the presence of underground sources of water and to teach locals how to acquire geophysical data (available satellite images and information will be provided by AQUAFUTURE Groundwater consultancy)."

Old Posts :

Five Most Extreme Hydrologic Events that changed the World

Typhoon Tip, Philipines(Collected from : CSMonitor ) Devastating storms, severe flood, acute famine conditions, etc. hydrological events of extreme nature has changed human history. Any event which is not normal is known as an abnormal event. In the case of hydrology, an event that has a return period of more than 100 years is considered Extreme. According to Herring(2020) of Climate.gov, "An extreme event is a time and place in which weather, climate, or environmental conditions—such as temperature, precipitation, drought, or flooding—rank above a threshold value near the upper or lower ends of the range of historical measurements." Though the threshold is not objective, few researchers have defined "extreme events as those that occur in the highest or lowest 5% or 10% of historical measurements". Some have described events by their deviation from the mean, or by their occurrence interval. Here the most severe five extreme hydrologic events were discussed which

Scientist Job in National Institute of Hydrology,Roorkee,India

For more information click here . @data_hydrology , @Merchandise or @ @products_sustainability Add to Listy

Arsenic responsible for gallbladder cancer ?

In a recent study, it was found that "chronic arsenic exposure in drinking water even at low-moderate levels can cause...Gall Bladder Cancer(GBC)". Assam and Bihar are two states in the country that report maximum GBC cases and they have maximum Arsenic load in groundwater or tubewell water that they consume. This link between GBC cases and the amount of Arsenic in water imbibes the conclusion that the more Arsenic more will be the risk of GBC. The study area was Assam and Bihar where a load of Arsenic varies from 10g/l to even 1500g/l. The sample population used in the study has a residential time span of 15 to 70 years which ensures minimum to maximum exposure to the groundwater of the area. When the Arsenic load is 1.3 to 8.9g/l risk of GBC is two times whereas when the load is 9.1 to 448.3g/l the risk is 2.4 times. But the point here is for a change in Arsenic concentration from 8.9 to 448.3g/l (i.e.,49.37 times) the cases of GBC rose by 20%. Is this sensitivity suffic