Arecibo World Day data description

The Arecibo incoherent scatter radar measures a number of plasma parameters, including: drift (V), concentration [Ne], electron temperature (Te) and ion temperature (Ti). A number of programs have been developed at Arecibo to optimize the observations at different regions and for different parameters. The following summarizes three most commonly used programs at Arecibo during a World Day experiment.

·         The F-region program covers the altitude range of 140 - 660 km. Line-of-sight velocity, Ti, Te, [Ne], [He+]/[Ne], and [H+]/[Ne] typically have a time resolution of 2 minutes and a height resolution of 37 km. The KINDAT code in the CEDAR database for these parameters is 2010. The vector ion drift velocity KINDAT code is 2011.

·         E-region program typically covers the altitude range of 90-160 km. Ti, Te and ion drift have a height resolution of 1.2 km and a time resolution comparable to that in the F-region. E-region program is usually run only during some specific campaigns, such as the Mesosphere and Lower Thermosphere Coupling Studies. The KINDAT code in the CEDAR database is 2021 for this kind of data.

·         The barker-code program allows the measurement of electron concentration at a height resolution of 0.6 km with a very high S/N. This program typically covers the altitude range of 60 - 500 km. The KINDAT code in the CEDAR database is 2015.


How to Get Arecibo Data

Processed data are archived at the CEDAR Database Center, Boulder, CO. in a common binary format. A compact binary format and an ASCII version are also available from Arecibo. Interested users are welcome to obtain the data either from the CEDAR Database or from the Arecibo Observatory by contacting Mike Sulzer.


Acknowledging the use of Arecibo data

If you have used the Arecibo data in your publication, please do not forget to acknowledge the Arecibo Observatory. The acknowledgement can be:

“The Arecibo Observatory is the principal facility of the National Astronomy and Ionosphere Center, which is operated by the Cornell University under a cooperative agreement with the National Science Foundation.”


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