Articles

Article published: 'Flow regime alteration due to anthropogenic and climatic changes in the Kangsabati River, India' Neha Mittal, Ashok Mishra, Rajendra Singh, Ajay Gajanan Bhave, Michael van der Valk (2014), Flow regime alteration due to anthropogenic and climatic changes in the Kangsabati River, India. In: Ecohydrology & Hydrobiology. Volume 14, Issue 3, 2014, Pages 182–191.
Ecohydrology & Hydrobiology, Tuesday 17 June 2014
Article published: 'Evaluation of hydrological effect of stakeholder prioritized climate change adaptation options based on multi-model regional climate projections' Ajay Gajanan Bhave, Ashok Mishra, Narendra Singh Raghuwanshi (2014). Evaluation of hydrological effect of stakeholder prioritized climate change adaptation options based on multi-model regional climate projections. In: Climatic Change, March 2014, Volume 123, Issue 2, pp 225-239.
Climatic Change, Monday 31 March 2014
Article published: 'Assessing future changes in seasonal climatic extremes in the Ganges river basin using an ensemble of regional climate models' Neha Mittal, Ashok Mishra, Rajendra Singh, Pankaj Kumar (2014). Assessing future changes in seasonal climatic extremes in the Ganges river basin using an ensemble of regional climate models. In: Climatic Change, March 2014, Volume 123, Issue 2, pp 273-286.
Climatic Change, Tuesday 21 January 2014
Changing monsoon patterns, snow and glacial melt, its impacts and adaptation options in northern India: Synthesis This paper gives a synthesis of this special issue on the sensitivity to climate change of the main bio-physical processes in the Hindukush–Karakoram–Himalayas. It also describes the impacts on the water resources with a special focus on the Ganges. Consequences of changes in water resources and possible adaptation measures for different sectors are discussed.
Eddy J. Moors, Markus Stoffel in Science of the Total Environment, Thursday 28 November 2013
Article published: 'A combined bottom-up and top-down approach for assessment of climate change adaptation' Focus of recent scientific research in the water sector has shifted from analysis of climate change impacts to assessment of climate change adaptation options. However, limited attention has been given to integration of bottom-up and top-down methods for assessment of adaptation options. The integrated approach used in this study uses hydrological modelling to assess the effect of stakeholder prioritized adaptation options for the Kangsabati river catchment in India. A series of 14 multi-level stakeholder consultations are used to ascertain locally relevant no-regret adaptation options using Multi-Criteria Analysis (MCA) and scenario analysis methods. A validated Water Evaluation And Planning (WEAP) model is then used to project the effect of three options; option 1 check dams (CD), option 2 increasing forest cover (IFC) and option 3 combined CD and IFC, on future (2021–2050) streamflow. High resolution (∼25 km) climatic projections from four Regional Climate Models (RCMs) and their ensemble based on the SRES A1B scenario for the mid-21st century period are used to force the WEAP model. Results indicate that although all three adaptation options reduce streamflow, in comparison with scenario without adaptation, their magnitude, temporal pattern and effect on high and low streamflows are different. Options 2 and 3 reduce streamflow percentage by an order of magnitude greater than option 1. These characteristics affect their ability to address key adaptation requirements and therefore, we find that IFC emerges as a hydrologically suitable adaptation option for the study area. Based on study results we also conclude that such an integrated approach is advantageous and is a valuable tool for locally relevant climate change adaptation policymaking.
Ajay Gajanan Bhave, Ashok Mishra, Narendra Singh Raghuwanshi / Journal of Hydrology, Monday 2 September 2013
Article: 'Combining climatological and participatory approaches for assessing changes in extreme climatic indices at regional scale' This paper combines the climatological and societal perspectives for assessing future climatic extremes over Kangasabati River basin in India using an ensemble of four high resolution (25 km) regional climate model (RCM) simulations from 1970 to 2050. The relevant extreme indices and their thresholds are defined in consultation with stakeholders and are then compared using RCM simulations. To evaluate the performance of RCM in realistically representing atmospheric processes in the basin, model simulations driven with ERAInterim global re-analysis data from 1989 to 2008 are compared with observations. The models perform well in simulating seasonality, interannual variability and climatic extremes. Future climatic extremes are evaluated based on RCM simulations driven by GCMs, for present (1970–1999) and for the SRES A1B scenario for future (2021–2050) period. The analysis shows an intensification of majority of extremes as projected by future ensemble mean. The study suggests that there is a marked consistency in stakeholder observed changes in climate extremes and future predicted trends.
Neha Mittal, Ashok Mishra, Rajendra Singh in Climatic Change, Tuesday 23 April 2013
Article: 'Sub-basin scale characterization of climate change vulnerability, impacts and adaptation in an Indian River basin' published in Regional Environmental Change HighNoon project members Ajay Gajanan Bhave, Ashok Mishra and Annemarie Groot have published the article 'Sub-basin scale characterization of climate change vulnerability, impacts and adaptation in an Indian River basin' in Regional Environmental Change.
HighNoon Secretary, Monday 25 February 2013
Communicating Modeled Information for Adaptation Decision Making The HighNoon project set out to assess the impact of the retreat of Himalayan glaciers and expected changes in the Indian summer monsoon on the distribution of water resources in Northern India. The project’s aim was “to recommend appropriate and efficient response strategies to enable adaptation to hydrological extreme events.” The project used information from scenarios generated by regional climate and hydrological models and integrated this with stakeholder perspectives to identify and prioritize adaptation strategies. By examining the HighNoon project, this case study explores how adaptation relevant information can best be packaged and disseminated to different users and audiences at the state, district, and block levels. It also explores what kinds of information are of most interest to different stakeholders and how different information could contribute (or not) to adaptation decision making.
WRI, TERI Issue Brief / HighNoon: Sreeja Nair, Sneha Balakrishnan, Suruchi Bhadwal, Sambita Ghosh, G.J. Lingaraj, Arabinda Mishra, Ashok Mishra, Ajay Bhave, Annemarie Groot, Christian Siderius, Catharien Terwisscha van Scheltinga, Hester Biemans, Eddy Moors, Tanya Singh, Friday 31 August 2012
Article 'Regional climate model application at subgrid scale on Indian winter monsoon over the western Himalayas' The western Himalayas is characterized by heterogeneous land surface characteristics and topography. During winter, eastward moving low-pressure synoptic weather systems, called Western Disturbances in Indian parlance, cause the majority of the precipitation mostly in the form of snow. The interplay between land surface/topography and WDs greatly controls precipitation distribution over the region. This study seeks to evaluate this using a mosaic-type parameterization of subgrid-scale topography and land use (sub-BATS) for regional climate simulation with a regional climate model (RegCM3). The model coarse grid cell size in the control simulation is 60 km while the subgrid cell size is 10 km. This study compares two 22 year simulations (1980–2001) during winter (DJF). The first simulation is without (CONT) and the second is with (SUB) the fine scale subgrid scheme. Representing the fine scale processes using the subgrid scheme SUB experiment simulates reduced precipitation by approximately 2 mm d−1 with comparison to CONT experiment. This estimation of reduced and closer to the corresponding observed precipitation is important for regional water budget over the WH which is primarily governed by topographic and land surface disaggregation. Validation with corresponding observations over similar elevations shows that SUB displays an improvement over CONT experiment. This relevant decrease of precipitation in SUB using disaggregation-reaggregation methodology for initial model input fields in subBATS scheme is due to better representation of the WH topography. In case of temperature, SUB experiment displays colder bias (∼2–4 °C) than the CONT over the Himalayas. This preliminary finding is important for studying regional water balance, snow melt accumulation in following summer period.
International Journal of Climatology, Monday 30 July 2012
‘Ganga basin temperatures to rise by 1-2°C by 2050’ Glaciers in the eastern Himalaya, which are usually smaller and at lower altitudes, are shrinking. These are losing more ice than is being replaced by snowfall. Glaciers in the western Himalaya are at higher altitudes and growing. Their growth can be attributed largely to snow accumulation by strong and frequent westerly winds. However, the data coverage is low and no definitive number can be given for the growth or shrinkage of the glaciers. It has become increasingly important to monitor them. An interview with HighNoon project leader Dr. Eddy Moors.
Down to Earth, Monday 18 June 2012