Marine Remote Sensing - Intro Flashcards
Provide three examples of marine variables that can be observed with passive RS techniques
water salinity, sea/ice thickness, wind speed over the oceans
passive microwave remote sensing in the marine environment - 3 things
- an abundance of information about Earth’s oceans can be obtained
- the amount of emissions at these wavelengths is a function of
water temperature and water salinity - estimates of the sea surface temperature: for weather forecasting
and ecological applications
measuring SST with passive microwave rs
- thermal wavelengths are blocked by clouds(measuring SST is cloud
dependent) - water vapor is one of the main sources of uncertainty in measuring
SST
active microwave remote sensing in the marine environment - 3 things
- synthetic aperture radar(microwave) and lidar to measure the sea
surface height, wave height and direction, currents - ocean surface topography
- sea ice patterns for navigation for commercial shipping and fishing
Be able to match sensor types to particular marine applications
- MODIS - sediment deposits in the water
- MODIS & VIIRS - measure sea surface temperature (SST)
- NASA’s Aquarius, NASA’s SMAP, ESA’s SMOS - salinity, sea ice thickness, and even wind speed over the oceans
Sentinel-2: Tracking phytoplankton provides important information about: 1) health of marine ecosystems 2) status and sustainability of fisheries 3) overall productivity and carbon dynamics of the ocean 4) for monitoring coastal processes for large sediments
Sentinel-1: sea ice patterns for navigation for commercial shipping and fishing
Jason-2 radar altimeter: measure the surface topography of the ocean.
There’s no other technology that allows us to monitor Earth’s oceans consistently and at the time and space scales necessary to understand their biological processes
Statement about satellite remote sensing
observations of the color of water can allow us to make determinations about what’s in the water just like we can do that on land
General statement
