Posts

Cloud feedback regulating the “pool of inhibited cloudiness”

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Our latest paper on the "Role of cloud feedback in regulating the “pool of inhibited cloudiness” over the Bay of Bengal" published in Springer Nature's  Meteorology and Atmospheric Physics . https://goo.gl/bNdLFg Read & Share Full Article here: http://rdcu.be/wOmz Anish Kumar M. Nair,  T. N. Rao and  K. Rajeev   Reference .bib   @Article{nair2017,   author   = {Nair, Anish Kumar M. and Rao, T. Narayana and Rajeev, K.},   title    = {Role of cloud feedback in regulating the “pool of inhibited cloudiness” over the Bay of Bengal},   journal  = {Meteorology and Atmospheric Physics},   year     = {2017},   pages    = {1--12},   month    = {10},   issn     = {0177-7971},   abstract = {Cloud-circulation feedback by latent heating (LH) is a major contributor for driving atmospheric circulation. This study exami...

TV interview with Dr.Suresh Babu, Scientist, SPL, VSSC, ISRO

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Congrats Dr. Suresh Babu for bagging the prestigious Shanthi Swarup Bhatnagar Prize 2017. CLICK HERE  Proud of you...!!! Wishing you and team more success !!

Autumnal Equinox 2016 as seen from Space (animated)

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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/

Solar Eclipse over Tirupati 09 Mar 2016 (simulated)

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Solar Eclipse (09 Mar 2016) is hardly visible over Tirupati. Here is an animated version (Figure (a)) of the simulation I have prepared using the free open source "Stellarium" software. The Sun rises over Tirupati by 06:23 IST. Meanwhile eclipse has already begun and being in penumbra region, it's partial eclipse over here. Click here to see the eclipse For reference, the figure (b) of eclipse locations are shown in the figure below (scroll down) which also shows time in Tirupati during the events.  (courtesy: timeanddate.com ) Figure (a): Animation of the solar eclipse (simulated) over Tirupati. 'E' indicates East Figure (b): How eclipse happens world wide (courtesy: timeanddate.com)

Lightning Photography

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I am sharing a few photos of Lightning I had clicked yesterday night over National Atmospheric Research Laboratory, Dept. of Space located at Gadanki, Andhra Pradesh, India. Cumulonimbus cloud band was observed in the eastern and southern sky and Gadanki was in periphery of the rain band. Also see the animated time series photos of the steps of lightning .  ~~~~~~~~~ Note the return stokes and bolts...!! ~~~~~~~~~ Recommended viewing: Full screen. Thanks to my Asus Zenfone.

CO2 at Record High concentration

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Concentrations of the greenhouse gas carbon dioxide (CO2) in the global atmosphere has surpassed 400 ppm  for the first time in human history in April. As on May 03, 2014 the value is still higher 401.80 ppm. Read more from official website http://keelingcurve.ucsd.edu/ Here is the screen shot. Courtesy: Scripps Institute of Oceanography http://keelingcurve.ucsd.edu/

Satellite Images - Easy to interpret

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Satellite images are are rich with useful and interesting information. It is not difficult to interpret them... here are some tips and stratergies....    They can show us how much a city has changed, how well our crops are growing, where a fire is burning, or when a storm is coming.  Here is a practical approach as given by Nasa Earth Observatory. Look for a scale Look for patterns, shapes, and textures Define the colors (including shadows) Find north Consider your prior knowledge Read more.... Check this link..... http://earthobservatory.nasa.gov/Features/ColorImage/?src=eorss-features Courtesy: Nasa Earth Observatory