MODIS on AQUA
Question 1
Into what general category of EOS does the instrument fall?
Hyperspectral
Question 2
What capture technology is used?
Cross-track scan mirror is used
Question 3
Is the sensor active or passive?
Passive
Question 4
At what wavelength(s) does the sensor function?
unmarked
Question 5
What resolution does the sensor have – temporal and spatial?
Temporal
16 day repeat cycle
Spatial
250m (Bands 1-2) 0.6µm - 0.9µm; 500m (Bands 3-7) 0.4µm - 2.1µm; 1000m (Bands 8-36) 0.4µm - 14.4µm
Question 6
Is the sensor carried on an airborne or space borne platform? What is that platform – typically?
The sensor is space borne on the platform AQUA
Question 7
Who developed/launched/manages the sensor?
NASA developed it.
It was launched on May 4th 2002 from Vandenberg Air Force Base.
Its prime contractor is Raytheon Santa Barbara Remote Sensing.
Question 8
Can data be purchased from service providers?
Yes
MODIS Ocean products can be found on NASA's Ocean Color website. http://oceancolor.gsfc.nasa.gov/
MODIS Level 1 products and Atmosphere products can be found on LAADS. http://ladsweb.nascom.nasa.gov/
Land data are stored and distributed by the EROS Data Center. http://edcdaac.usgs.gov/modis/dataproducts.asp
Snow and ice data are stored and distributed by NSIDC. http://nsidc.org/daac/modis/index.html
Question 9
What products are available?
See the attached link: http://aqua.nasa.gov/about/instrument_modis_dp.php
Question 10
At which main application areas is the sensor aimed?
Modis on aqua is aimed at studying the potential effects of climate change all over the planet and moniters the state of the environment by measuring factors associated with the earth's water cycle.
List 2 specific projects, where they have been reported, their goals and their outcomes.
1. Paracas Bay is an area off the central coast of Peru. It is part of the Paracas National Reserve, but at the same time it is an important fishing area which is in close proximity to fishing industries in the port of Pisco. Around 130 fishing vessels are based in Pisco, and eight fisheries-related factories are located there. Fishing, fish meal manufacturing,and fish and shellfish farming are the region’s most important economic activities. These activities are often disrupted by harmful algal blooms that can kill fish and shellfish both by producing toxins and causing anoxia (oxygen depletion) as a result of respiration and decay of the biomass. This cost the local fishing industry $27.5 million in lost revenue. MODIS bands were designed for land applications, and their sensitivities are lower than those of the dedicated 1-km ocean bands. Recent work [Hu et al., 2003; Li et al., 2003] has shown that these bands have sufficient sensitivity to be useful in various aquatic applications such as detection and mapping of turbid plumes, oil slicks,and water quality in productive estuaries. From now on Modis will be detecting, monitoring and mapping the algal bloom in the bay.
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