Science is for Sharing

Our collaborative research article Sensitivity of climate models in relation to the “pool of inhibited cloudiness” over South of the Bay of Bengal  is published in the International Journal of Climatology recently. [ click to view the paper ] / [ click here to download the paper ] It is on evaluation of CMIP5 models and suites of CFSv2 in capturing a region known as "Pool of inhibited cloudiness" [ click to view the base paper ] over the southwest Bay of Bengal region. This region was actually identified based on satellite observation by Nair et al. (2011)   However, the fidelity of climate models were not evaluated to capture this region of suppressed convection (surrounded by region of deep convection). Climate models (cmip5 and CFSv2 default) shows difficulties in simulating the region. However, improved cloud physics seem to have played an important role in capturing the complex process Present Paper: Roy, K., Mukhopadhyay, P., Mu...

An Equinox is the astronomical event when both the hemispheres have equal duration and amount of sunshine. Sun would be exactly overhead of the equator. It happens twice in a year Spring (Summer) equinox (20 March) and Vernal (Autumnal) equinox (22 September) . Here is the view of the beautiful event from space for 22 September 2016. I have animated it (time series for the day). Watch the day-night solar terminator move through the earth. Observe the equal area of sunshine and night on either hemisphere. The visible imagery is from MeteoSat VISSR (IODC) stationed at 57deg.E longitude above equator in a geostationary orbit. For a typical comparison of Equinoxes with Solistices, you may go through this link http://akmnscience.blogspot.in/2012/07/equinox-solstice-better-view.html Image Courtesy: Dundee Satellite Receiving Station http://www.sat.dundee.ac.uk/

Here is how SOLSTICE and EQUINOX mean in reality. Equinox ==== Sun's rays fall equally in both Hemisphere..... Solstice  ==== Sun's rays falls on more area in summer hemisphere. I have made this Equinox-Solstice matrix for simple and clear understanding. We were all familiar with the cartoon graphics..... now this is the reality... These images are by Meteosat in VIS channel. Image courtesy:Dundee Satellite Receiving station.

This is how Solstice and Equinox look like ....... ....... a wider perspective.... ......view from space. Equinox ------ Sun overhead equator ---- sunlight falls equally in both Hemispheres. Solstice  ------ Sun is overhead northern/ southernmost position ---- sunlight falls maximum in Summer Hemispheres. I have taken the selected days visible imagery from Meteosat and arranged them in a 2x2 matrix..... Image courtesy: Dundee Satellite Receiving Station. (Isn't it better and give real information than the long used Inspiration obtained from: Seeing Equinoxes and Solstices from Space http://earthobservatory.nasa.gov/IOTD/view.php?id=52248