Category: Water Availability Theme

Snow sensing helps predict water shortages

Originally Published by New Scientist – Precisely measuring supplies of meltwater could help farmers in the US plan what they plant in order to battle a changing climate Topic: Climate

SHARE: Soil Moisture for Hydrometeorological Applications

Five maps showing The ASAR GM relative soil moisture product (monthly mean) over Victoria in Feb. 2007-2011.

Two maps showing The simple Pearson correlation coefficient between ASAR GM and AWRA-L soil moisture (left). AWRA-L is a landscape hydrology model that explicitly models soil surface moisture dynamics. The ASAR GM error (right) is estimated by propagating sensor error through the ASAR GM retrieval algorithm.The SHARE project demonstrates how data from medium resolution microwave instruments can be used to support flood monitoring efforts. The data can help determine the amount of runoff resulting from rain and support monitoring of inundated areas during a flood.

Micro-level Drought Vulnerability Assessment in Peddavagu basin, a Tributary of Krishna River, Andhra Pradesh, India

Map showing the location of Peddavagu basin, a tributary of Krishna River basin

Map of Digital Elevation Model of Peddavagu basin, a tributary of Krishna River basinAssessing the micro-level spatial drought vulnerability in South Central India can assist with coping measures for farmers and others in the region. This study used various thematic maps to derive a village-level drought vulnerability map, which will be useful to drought management and preparedness in the future.

Remote Sensing of Alkaline-Saline Lakes: Applications to Flamingo Conservation

Photo of lesser flamingos at Lake Bogoria, Kenya

Image of arthrospira fusiformis, the dominant phyoplankton species in Lake Bogoria.The lesser flamingo of Kenya and Tanzania is a near-threatened species that feeds on bacterial biomass growing in the soda lakes of the Rift Valley. This interdisciplinary project investigates the connections between ecological and hydrological processes in alkaline-saline lakes, and demonstrates how satellite data can contribute to remote monitoring of ecosystems.

Water Availability in Reference to Water Needs in Poland: The Importance of Correct Estimation of Water Resources

Map showing average annual precipitation in Europe over the period of 1940-1995

Map showing average annual precipitation in Europe over the period of 1940-1995The improper selection of indicators of water resources can lead to inaccurate estimates of supply and may complicate the management of these vital resources. This paper discusses the benefits of using Earth observation technology in the Global Monitoring for Environment and Security program for estimating water resources in Poland.

Groundwater Storage Estimates in the Central Valley Aquifer Using GRACE Data

A map outlining the Central Valley aquifer.

Drawing of the GRACE satellite orbiting Earth.A project on the use of Gravity Recovery and Climate Experiment (GRACE) data to estimate changes in groundwater storage in the Central Valley aquifer in collaboration with the California Department of Water Resources (DWR). This work has the potential to improve California’s groundwater resource management and the use of existing hydrologic models for the Central Valley.

The Water Question in Lake Chad Basin: Lessons from the Drought in Somalia

A table showing Mean annual precipitation from 1961 to 1990 in Somalia and the Lake Chad Basin.

Image of study areas showing perennial rivers in dark blue and intermittent rivers in sky blue in the Lake Chad Basin, Somalia, and AfricaWill an effective mechanism be put in place to detect the onset of drought in Africa’s Lake Chad Basin? What needs to be done to minimize adverse effects of drought in the basin? In this essay, scientific perspectives are applied to explain and compare the complex nature of the current drought in Somalia and the Lake Chad Basin.

GrapeLook: Improving Agricultural Water Management using Satellite Earth Observation

Image showing the study areas and provincial borders
picture of Block with wine grapes in Western Cape Province.Limited water resource availability and efficient water management are major global challenges facing policymakers in many countries of the world, and South Africa is no exception. Advanced satellite technologies offer new opportunities to address these issues. In 2010, the GrapeLook project was initiated, providing information on crop water, growth and nitrogen status during the growth season using satellite data. The first demonstration year provided users with a deeper insight into the temporal and spatial processes in vineyards to improve water productivity.

Using the Landsat Archive for the Monitoring of Mediterranean Coastal Wetlands: Examples from the GlobWetland-II Project

Figure showing Time series of the normalized difference vegetation index (NDVI) indicate different coastal Mediterranean wetland types derived from nine Landsat ETM+ acquisitions from September 2001 to January 2003, over the study area of the Menderes Delta, Turkey.
Figure showing multi-temporal Wetland Identification and Delineation products (1975, 1990, and 2002) for exemplary sites between Izmir and Bodrum (upper part: region around Tahtali Dam; lower part: Bodrum airport area).Coastal wetlands in the Mediterranean have undergone considerable land use and land cover changes in recent decades, by way of urban growth and increasing tourism infrastructure. The GlobWetland-II project makes use of the 35 years of Landsat archives for a basic identification and delineation of wetlands during 1975, 1990, and 2005. The authors present results of wetland identification and delineation mapping from 1975 to 2002, for the test sites of the Menderes Delta and Güllük Bay.

Freshwater resources management: Starting SMART characterization of New Zealand’s aquifers

Table showing aquifer properties to be measured and proposed methods to be applied in the Smart Aquifer Characterization research program.
cropped image from figure 2 showing a country's mapDespite the importance of New Zealand’s groundwater resources, we still lack essential information related to their basic properties which are required to avoid overexploitation of resources and water scarcity situations where humans and the economy will be stressed due to insufficient water supply.