VINOD BINYALA - PowerPoint PPT Presentation

Title: VINOD BINYALA


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Detection and Analysis of Growth of Sea-Ice
Using MSMR Brightness Temperature Data
VINOD BINYALA B.Tech, IV Year, Civil
Engineering, IT-BHU SHARAD V. OBEROI B.Tech, II
Year, Civil Engineering, IT-BHU and Dr.
K.S.RAO CSRE, IIT Bombay
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Introduction

• Temporal and spatial variation of Brightness
  Temperature Data are studied for different
  geographical regions.
• It has been found that this analysis is useful
  for detection and growth of sea-ice in polar
  regions.

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MSMR Principles

• The Multi-Frequency Scanning Microwave Radiometer
  on board the IRS-P4 satellite has a repitivity
  cycle of two days and acquires in four
  frequencies and two polarizations.

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IRS-P4 (Oceansat-1)

• Payloads
• OCM (Ocean Color Monitor) with 8 spectral bands
  for the measurements of physical and biological
  oceanographic parameters.
• MSMR (Multi-frequency Scanning Microwave
  Radiometers) operating at 6.6, 10.65, 18.0 and 21
  GHz frequencies with H and V polarizations and at
  spatial resolution of 150 km, 75 km and 50 km
  respectively

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Temporal Variation of Brightness temperature for
location near latitude 75 N and longitude 135 E
for frequencies 6.6, 10.65, 18 and 21 GHz
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Temporal Variation of Brightness temperature for
location near latitude 75 N and longitude 135 E
for frequencies 6.6, 10.65, 18 and 21 GHz
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Temporal Variation of Brightness temperature for
location near latitude 75 N and longitude 135 E
for frequencies 6.6, 10.65, 18 and 21 GHz
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Temporal Variation of Brightness temperature for
location near latitude 75 N and longitude 135 E
for frequencies 6.6, 10.65, 18 and 21 GHz
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Monthly Variation (October 2000) of Brightness
temperature for location near latitude 75 N and
longitude 135 E for frequencies 6.6, 10.65, 18
and 21 GHz
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Brightness Temperature Map Tb (18V) for area
extending from latitude 73 N to 78 N and
longitude 115 E to 145 E
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Brightness Temperature Map Tb (18V) for area
extending from latitude 73 N to 78 N and
longitude 115 E to 145 E
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Brightness Temperature Map Tb (18V) for area
extending from latitude 73 N to 78 N and
longitude 115 E to 145 E
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Brightness Temperature Map Tb (18V) for area
extending from latitude 73 N to 78 N and
longitude 115 E to 145 E
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Temporal Variation of Brightness temperature from
Nimbus satellite data
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Polar Brightness Temperature map of Tb (18V) up
to latitude 68 N
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Conclusions

• There is a sharp increase in the BTD values due
  to the accumulation and growth of ice cover over
  the previously ice-free oceans.
• The process of freezing up is very quick, in
  contrast to the melting down process which takes
  at least a few months.

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Suggestions

• The Tb maps of whole polar region can be prepared
  at regular intervals of about 15 days to locate
  areas having rapid polar sea-ice freeze up.
• The extent of ice cover over oceans in the polar
  regions can be monitored and ships traversing
  these routes be guided, using communication
  satellites.

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