Modelling for Science, for a better future - some recent outcomes
Seismotectonic implications of strike–slip earthquakes in the Darjiling–Sikkim Himalaya
by Malay Mukul, Sridevi Jade, Abdul Kutubuddin and Matin
The Darjiling–Sikkim Himalaya (DSH) is located over the Dharan–Gorubathan salient–recess pair and moderate thrust and strike–slip earthquake occur here. The hypocentres cluster not only near the location of the Main Himalayan Thrust (MHT) or the basal decollement of the Himalayan wedge, but also well above and below it. The epicentres cluster over the mapped location of the Lesser Himalayan Duplex (LHD), suggesting that both MHT and LHD are active structures in DSH.
A comparative evaluation of impact of domain size and parameterization scheme on simulation of tropical cyclones in the Bay of Bengal
by Prashant Goswami and G. N. Mohapatra
A large number of processes and factors control the quality of simulations with a numerical weather prediction model and especially with mesoscale models; identiﬁcation and optimization of these processes are critical for improving forecast skill. The importance of cumulus parameterization schemes in simulation of tropical cyclones was recognized early, and a large number of studies have addressed this issue. However, certain other aspects have received relatively less attention. In particular, unlike simulation with a global circulation model, a mesoscale simulation is characterized by a limited domain and hence inhomogeneous lateral boundary conditions that strongly affect the quality of the simulation. In this work, we investigate the relative impact of size of the model domain and the cumulus parameterization scheme on simulation of 10 cyclones over the Bay of Bengal during the period 1999–2009.
Estimation of seismic hazard and risks for the Himalayas and surrounding regions based on Unified Scaling Law for Earthquakes
by Imtiyaz A. Parvez, Anastasia Nekrasova, Vladimir Kossobokov
To estimate seismic hazard, the basic law of seismicity, the Gutenberg–Richter recurrence relation, is applied in a modified form involving a spatial term: logN(M,L)=A−B(M−5)+ClogL , where N(M,L) is the expected annual number of earthquakes of a certain magnitude M within an area of linear size L. The parameters A, B, and C of this Unified Scaling Law for Earthquakes (USLE) in the Himalayas and surrounding regions have been studied on the basis of a variable space and time-scale approach.
- The Aqua-Planet Experiment (APE): Response to Changed Meridional SST Profile
- Do CMIP5 simulations of Indian summer monsoon rainfall differ from those of CMIP3?
- Effect of Rotation, Magnetic Field and Initial Stresses on Propagation of Plane Waves in Transversely Isotropic Dissipative Half Space
- How dependent is climate change projection of Indian summer monsoon rainfall and extreme events on model resolution?
- Semi-diurnal variation of surface rainfall studied from global cloud-system resolving model and satellite observations