1. Salinity
소금 조
곽민석
김상민
손지탁
허나윤

2. Contents ⅠIntroduction and background ⅤConclusion
Ⅱ Disadvantages of aquarius/sac-d
Ⅲ Improved sensor for measuring ocean salinity
Ⅳ Calulation

3. Introduction and background

4. Introduction and background
Salinty
temperature

5. Introduction and background
Limited shipping lanes

6. Introduction and background

7. Introduction and backgroundTb =
e * T
Tb The ocean radiometric brightness temperature
e The emissivity
T The absolute thermodynamic temperature

8. Introduction and background
Decrease the emissivity

9. Disadvantage of Aquarius/sac-d
Orbit & Altitude
657kilometers high
Sun-synchronous orbit
98minutes one orbit
Seven days mapping global open ocean

10. Disadvantage of Aquarius/sac-d
Resolution & Footprint & Swath
Resolution 150kilometers
Swath kilometers
Footprint 100kilometers

11. Disadvantage of Aquarius/sac-d
Instrument

12. Improved sensor designed to measure ocean salinity
Orbit & Altitude
Oribit No change
Altitude 700km
Instrument & Resolution
Spatial resolution 10km
temporal resolution 8days
Combine radar and radiometer
Antenna reflectors twice as long as Aquarius.
360 degrees of the antenna

13. Improved sensor designed to measure ocean salinity
Footprint & Swath
Footprint 50km
Swath 1000km
Data products
Level 4 data products (interpolation)
-Argo observations

14. Calculation Altitude r -> 700km Earth’s radius
RE -> about 6400km
R=7100km
GME=4*10^14m^3/s^2
V= 8km/s
V=2 πR/T
T=2 πR/V
T=93minutes

15. Conclusion Salinity has a major effect
Understand better ocean circulation and satellite

16. reference https://podaac.jpl.nasa.gov/SeaSurfaceSalinity

17. Q&A

18. THANK YOU