Basin-wide sea level coherency in the tropical Indian Ocean driven by Madden-Julian Oscillation.

Changes in sea level may be attributed either to barotropic (involving the entire water column) or baroclinic processes (governed by stratification). It has been widely accepted that barotropic sea level changes in the tropics are insignificant at intraseasonal time scales (periods of 30-80 days). Based on bottom pressure records, we present evidence for significant basin-wide barotropic sea level variability in the tropical Indian Ocean during December-April with standard deviations amounting to ∼30-60% of the standard deviation in total intraseasonal sea level variability.

Formulation of multiple choice questions as a revision exercise at the end of a teaching module in biochemistry.

The graduate medical students often get less opportunity for clarifying their doubts and to reinforce their concepts after lecture classes. Assessment of the effect of MCQ preparation by graduate medical students as a revision exercise on the topic "Mineral metabolism." At the end of regular teaching module on the topic "Mineral metabolism," graduate medical students were asked to prepare the stems of 15 MCQs based on the four discriminators given for each.