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Raj Bhagat P #Mapper4Life Profile picture
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22 Aug, 3 tweets, 2 min read
#Maps show #rainfall anomaly this year's monsoon (till August 16). Data: Satellite observation based Global Precip. Mission

Some parts of India (Odisha, Gujarat, West coast, NE India) have recorded lesser rainfall than the last 21 years

Few days of Aug & Sep still left for SWM
India Meteorological Department's map with ground observations look similar! Gujarat, Odisha, NE, West coast seem to be scoring lower numbers
FAQ
Data: GPM
Software: Data processing in Google Earth Engine, Visualizations in QGIS, Arrows and Title addition in PowerPoint!

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More from @rajbhagatt

Raj Bhagat P #Mapper4Life Profile picture
26 Jun
#Story of Lakkasandra lake in #Bengaluru

The thread shows the recent history and transformations it went through over time.

#Map shows the location of lake with an approximate boundary of the plot.
The waterbody in Lakkasandra might have lost its original applications many decades ago and hence revenue maps (given on the left) shows it as a government land but not specifically as a waterbody. Google Maps however shows the waterbody as it was detected in the early 2000s
But the lake seems to have water in many satellite images from 1970s, 1980s, and 1990s. It has attributes similar to any seasonal rainfed waterbody in the region
Read 15 tweets
Raj Bhagat P #Mapper4Life Profile picture
10 May
#Thread
#Elections are supposed to be about electing representations for framing legislations

However the geography behind delimitation which doesnt consider complex socio-economic conditions promote communal polarization leading to deterioration of Democractic values

1/n
Understanding Delmitation:

The constituency delimitation is based on population. and for last delineation exercise, 2001 population was used. Average population was calculated to be 270000 people per constituency

#Map shows Population spread in Tamil Nadu
2/n
To delineate which village/town comes under which constituency, some rules are followed

To achieve the avg population, officials start with headquarters for the constituencies in district & add villages/towns within same or neighbouring taluks(subdistricts) in same district

3/n
Read 35 tweets
Raj Bhagat P #Mapper4Life Profile picture
27 Apr
We talk about #DigitalIndia & every other meeting someone would claim that data is the new gold etc. But when it comes to critical data& good quality data, India is far far behind..

Eg: India's open data platform- data.gov.in provides the locations of hospitals
Location quality of many of these hospitals are not very accurate and 250 of them are mark outside the country!
The reason being is that they have automated geocoding using Google Maps
Why this happens: When done at a global scale, Google Maps API tries to read the address and gives the most "relevant" result. So D C Bank road (probably district cooperative bank) is marked in Washington DC
and Oxford Public School is marked in Oxford, England
Read 6 tweets
Raj Bhagat P #Mapper4Life Profile picture
25 Apr
Thread:

I had earlier posted that I am not confident about Covid Nos & few asked explanation

Attaching satellite images where SWIR bands have picked up fire signals in crematoriums(orange colour). In most cases, this is 1st time detected or ten times intensity detected in past
Images from NOIDA, Vrindavan, Mathura, Lucknow (Clockwise from left top)

Orangish -red colour is the place of the ghats where these cremations take place
DhoriGhat, Baksar, Bhitoura, Fatehpur Ganga (These are Mild Signals)
Read 17 tweets
Raj Bhagat P #Mapper4Life Profile picture
13 Mar
May had been asking me whether Isha encroached forest lands. IMO this is deviating from actual issue. Read full thread

Isha didNOT build on forest dept lands as such but it VIOLATED rules in other ways

Old Satellite image & map show that it was not forest but revenue land
Inorder to protect out environment, we had framed laws to secure permissions from necessary authorities. Since it was farmland and since it came under Hill Area Conservation Authority, necessary permissions were to be secured from respective offices
In their webpage, Isha says that they secured permission to construct statue on Sep - Nov 2016. But prior to securing permission itself they started constructing. Attached #Satellite images from Jan & Feb 2016 show that construction had already started before securing permission
Read 9 tweets
Raj Bhagat P #Mapper4Life Profile picture
12 Mar
#SaudiArabia #NEOM

WORKERS KINGS
Cause It would be insane to have palaces for kings without golf courses in the desert
Carefully engineered quarters and compound for security officials and other workers in royal palace. But unlike the royals they dont deserve green.
Read 7 tweets

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