Global Water Information through Spatial Data
and Knowledge gateways @ IWMI
Water Use Trends over Space and Time through
Global Maps, Statistics, and Models
The overarching goal of the Global Water Information is to produce a series of global water and water related maps, models, and statistics over space and time and link this information to climate change. The central idea is to develop a state-of-art global water information center (GWIC) that will study water use trends of the past, present, and the future and help us understand linkages between water use, land utilization for purposes such as irrigation, population growth, environmental demands, and sustainable growth. Overwhelming emphasis will be placed on use of spatial data from remote sensing and GIS (RS\GIS). read more...
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The overarching goal of this web portal will be to establish a comprehensive national Knowledge Base System for Sri Lanka (KBS-Lanka) that encompasses disaster preparedness and rapid response for droughts and other natural disasters, and also enables natural resource assessment and monitoring on a near-real-time basis using remote sensing and other spatial techniques. The KBS-Lanka project has developed a near-real-time (fortnightly and/or monthly) system on the following 3 key components using satellite sensor data from advanced systems that are available free, from reliable sources:
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South Asia Drought Monitor (SADM) is an evolving drought monitoring tool, which, in its present form is based entirely on remote sensing data. It aims to supply timely information on drought onset, progression and areal extent. This near-real-time drought monitoring and reporting system currently covers Afghanistan, Pakistan and western parts of India. The system is based on drought-related indices derived from high resolution remote-sensing data (MODIS).
The unique feature of the system is the use of earlier established relationship between drought-related indices obtained from MODIS and AVHRR data. These data types have different pixel resolution and optical characteristics (Thenkabail et al, 2004). The results ensure the continuity of the two data sets and should allow the reports on drought development in the region to be made in near-real time with a spatial resolution of 500 meters and at 8 or 16 days interval.
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The IWMI World Water and Climate Atlas gives irrigation and agricultural planners rapid access to accurate data on climate and moisture availability for agriculture.
The Atlas includes monthly and annual summaries for precipitation, temperature, humidity, hours of sunshine, evaporation estimates, wind speed, total number of days with and without rainfall, days without frost and Penman-Montieth reference evapotranspiration rates.
The core of the Atlas is data assembled from weather stations around the world for the period 1961-1990. Data can be extracted in summary, manipulated using the Atlas software, or exported in a standardized format for use in other applications. Users can also include their own local data for a more detailed picture of a particular area.
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Thematic emphasis is on ecological changes in semi-arid Central- and West-Asia, with the objective
to investigate possibilities for a more meaningful, regional assessment of eco-system health from space.
Though the primary interest is a regional one the results are intended to be detailed enough in order to
be useful for local decision making. To explain any changes in eco-system health and their drivers,
research effort is on vegetation, soils, climate, hydrology, and human activities. This will be achieved
through various innovative techniques including a classifier that is sensitive to functional characteristics
of vegetation or an algorithm that allows the separation of climate induced from subtle, human induced green
biomass changes.
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The Integrated Database Information System (IDIS) is an on-line data sharing platform that provides access to water, agriculture and environment scientific data to help researchers and their research partners improve the water productivity. IDIS contains over 1 billion records with focus on IWMI and CPWF basins. IDIS is funded by the CPWF and IWMI and hosted in Colombo, Sri Lanka.
IDIS System is developed using distributed databases approach and its planed that IDIS System will be established in all IWMI & CPWF basins. This will give better and fast access to researchers / scientists working locally in these basins. In this concern IDIS team started establishing different node. Please select your desired node.
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