Atlas

NRSC has published the following Atlas:

The 25th year of the launch of first Indian Remote Sensing (IRS) Satellite IRS-1A, we have attempted to put together a set of images that visualize the changes in land cover that have occurred in our country as observed from Indian Earth Observation sensors. The changes - which are due to both natural processes and human interventions - have been organized under seven land cover themes: Agriculture, Forests, Water resources and Wetlands, Coasts and Oceans, Urban and Disasters. Attempts have been made on local and continent level to visualize the changes. These changes are both long term, transient and episodic. In general, the time epochs chosen for the atlas are spaced at about a decade interval. A wide range of Indian Remote Sensing (IRS) sensors have been employed for viewing these changes - from high resolution ones that can detect infrastructure changes and glacial lakes, to moderate resolution and wide swath sensors that can map large-scale changes like those in forests and water bodies. On the right hand side pages are multiple images with corresponding brief note on the geographical coverage, satellite/sensor, and date of image acquisition, while on the left hand side, a single image offering a perspective view of the same area have been depicted.


Satellite altimeter sensor has provided a new dimension to the ocean observing capability by providing an integrated picture of the ocean from bottom to surface through sea surface height anomaly (SSHA) fields. Given the limited availability of ocean observations and absence of a continuous, multi parameter full coverage in situ ocean observing system, much needed inputs for forecast of meteorological phenomenon globally and in particular over the Indian Ocean region are scarce. The Ocean Heat Content (OHC) or Tropical Cyclone Heat Potential (TCHP) derived from SSHA appears as a viable alternative to monitor heat energy available from the upper ocean to study the genesis and/or intensification of tropical cyclones. In recent years attention of the cyclone forecasters has also been focused on use of the energy available in the oceans through TCHP. With the availability of accurate altimeter observations able to resolve mesoscale features from 1993 onwards, it has been possible to prepare the TCHP atlas. The atlas on TCHP brought out by Atmosphere and Ocean Sciences Group with collaboration from NOAA/AOML and other Indian institutions will enhance our understanding of cyclones..


The River Basin Atlas of India has been prepared under the joint project Generation of Database and Implementation of Web Enabled Water Resources Information System (India-WRIS) in the Country by the Central Water Commission (CWC) and Indian Space Research Organisation (ISRO). It has been launched on November 1, 2012 by Hon'ble Minister of Water Resources Shri. Harish Rawat in a function organized at CWC, New Delhi.


Wastelands mapping has been carried out using three season satellite data for the period 2008 - 09. The current exercise ‘National Wastelands Change Analysis’ is a ‘watershed’ in the entire wastelands mapping since it facilitates objective comparison of wastelands between 2005 - 06 and 2008 - 09. The changes in wastelands is presented in the form of change matrices. The decrease in wastelands of 3.2 million hectares was observed, spread over 112057 locations (polygons), while simultaneously an increase in wastelands of 2.7 million hectares in 42886 locations was observed. Thus, the net result was decrease in wasteland area to the tune of 0.5 million hectares in 2008 - 09 as compared to 2005 - 2006, when aggregated for the entire country and wasteland classes


NRSC/ISRO has taken up development of Flood Hazard Zonation Maps using satellite data towards Disaster Risk Reduction, in addition to flood response services through Decision Support Centre (DSC) under ISRO-DMS Programme. Over a period of time, ISRO has created a repository of large data pertaining to the floods in different areas of the Country. These historical datasets, generated by NRSC/ISRO, are useful for identification of the flood-prone areas and risk assessment. NRSC/ISRO has prepared district wise flood hazard zonation atlas for Bihar state using the available historical satellite datasets spanning over 13 years and intra annual flood variations from 1998 to 2010.he flood hazard maps prepared from satellite data were peer reviewed by a Committee constituted by National Disaster Management Authority (NDMA), which includes CWC (Central Water Commission), IMD (India Meteorological Department) and BSDMA (Bihar State Disaster Management Authority). The flood hazard maps were also validated on ground by the BSDMA through its district administration. Similar efforts are on the way for other states like Orissa, West Bengal and Uttar Pradesh etc.

Atlas