James Varghese

11 Questions 324 Answers 0 Followers

Questions related from James Varghese

How to identify optically thin Cirrus Clouds in historical satellite images acquired with Passive Remote Sensing satellite sensors?

Unlike Optically thick clouds, Cirrus Clouds are thin, high altitude clouds formed in the upper troposphere layer of the Earth's Atmosphere. These Cirrus Clouds are not easily identifiable in the...

24 March 2019 2,154 3 View

How to obtain emissivity image for calculation of night-time Landsat Land Surface Temperature?

Emissivity is a crucial parameter for calculating Land Surface Temperature (LST). One of the algorithms to calculate LST using single thermal band of Landsat 8 (Band 10) or Landsat 7 (Band 6) or...

25 March 2018 7,714 35 View

How often do dust storms originating in Middle East travel and mix with smog in North India & Pakistan?

Does anyone know how frequently sand storms and dust storms that arise from middle east or north africa travel to Pakistan and North India? I was wondering, in view of the already worsening air...

01 November 2017 8,161 6 View

What is the best way to take soil moisture and corresponding thermal infrared (TIR) measurements for the top part of a soil?

I am carrying out a lab experiment to see the effect of dry and wet soil on Emitted Radiance. The results are anticipated to help develop an understanding of how soil moisture influences...

26 November 2015 2,905 10 View

How can I model the ground surface temperature using the surface energy balance equation?

My aim is to derive the ground surface temperature using the land surface energy balance equation which describes heat inputs to the ground surface from different sources. After deriving the...

22 August 2015 9,027 14 View

What are the current challenges & innovations in Geothermal Resource Exploration?

Geothermal Energy has long been regarded as Green Energy's silver bullet. And rightly so because of its potential as a stable, secure, environmentally friendly and a cheap Energy resource. But...

06 April 2015 7,505 7 View

Which factors are influential while preparing a Landslide Susceptibility Map using a Spatial Multi-Criteria Analysis technique?

Weights need to be assigned to various factors based on their order of significance at the time of preparing a Landslide Susceptibility Map with the help of a Spatial Multi-Criteria Evaluation...

09 February 2015 9,932 8 View

What are the most reliable sources of hazards and disaster statistics?

Usually an Internet search would return billions of results when the following keywords are looked up, 'disaster statistics' or 'natural hazard statistics'. Further exploration reveals official...

05 January 2015 7,243 17 View

What is the appropriate way of performing a multi-temporal land cover change detection analysis?

I have three different satellite Images from three different time periods, one from Landsat 8 (30 m), another from ASTER (15m) and one from MODIS (250 m). The objective here is to do a...

30 November 2014 4,421 13 View

How effective has Remote Sensing, Geospatial Intelligence and Technology been in analyzing air disasters?

The cause of air disasters may range from bad weather to technical glitches. The worst part is when nothing is known about the location of crash sites like that of the MH370. The knowledge of what...

02 September 2014 3,905 3 View

Can anyone help me find sources of information on Band 1 (Coastal/Aerosol band) of Landsat 8, preferably research articles?

Although I have been able to get most of the information related to Landsat 8 and its bands from landsat.usgs.gov website, still, I haven’t been able to explore the complete potential of its...

07 August 2014 1,603 13 View