ECOsystem Spaceborne Thermal Radiometer Experiment on Space Station
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Frequently Asked Questions

Qn1: Can I use an ECOSTRESS gallery image for my presentation?

Ans1: Unless otherwise noted, images and video on JPL public web sites (public sites ending with a jpl.nasa.gov address) may be used for any purpose without prior permission, subject to the special cases noted in the Image Policy.   Use the proper credit information provided in the image policy.

Qn2: Why are ECOSTRESS ET values greater than my eddy covariance measurements?

Ans2:
Check a few things:
  1. Cloud mask: sometimes clouds cause low LST, and hence high ET (related, you should look at the in-situ light measurements for cloudiness—if the day is really cloudy, consider excluding that day);
  2. Quality flag/uncertainty: check them;
  3. Site heterogeneity: highly heterogeneous sites may have outside-pixel contamination;
  4. Eddy covariance energy balance closure: did you close your EBC? Typically, eddy flux ET may need to be increased to deal with EBC (e.g., fluxnet.fluxdata.org/data/fluxnet2015-dataset/data-processing).

Qn3: How does ECOSTRESS ignore the clouds or rain storms?

Ans3: ECOSTRESS cannot see through the clouds and relies on clear skies.  However, since the instrument is on the ISS and based on its orbits ECOSTRESS passes over the same area fairly frequently for a given day.

Qn4: What is the make and model of the thermal camera on ECOSTRESS?

Ans4: ECOSTRESS was designed, developed and built by NASA's Jet Propulsion Laboratory and is an unique custom built, one of a kind instrument. 

Qn5: Will the data be available on a subscription based system?

Ans5: There is no subscription based system and NASA provides the data freely available via the Land Processes Distributed Active Archive Center (LP DAAC). link File