2.2.md

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 [<< Section 2.1](/2.1)
 
+The primary justification for incurring the additional costs of moving the ALPCA project to the Green Bank Telescope is the wide range of truly impactful scientific work which will be enabled by ALPACA on the GBT. Much of this would likely not be possible with existing instruments on other U.S.\ telescopes.  With the loss of AO, which will increase pressure on the GBT, many ongoing and planned observational campaigns would greatly benefit from a very widefield, multibeam, L-band survey instrument on the GBT. 
+
+A very telling indicator of ALPACA's potential for significant impact on radio astronomical disciplines is found in a collection of abstracts for science projects which would be enabled with ALPACA on the GBT.  GBO Director James Jackson wanted to measure the scientific user base demand for such an instrument. He asked Professor D.J. Pisano of West Virginia University to independently collect these abstracts to help him in evaluating the ALPACA project.  By February 2022, 21 abstracts had been submitted.  Their titles and authors are listed here, representing the wide ranging and impactful projects which interested users proposed.  The full abstracts can be found in the links below:
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+1. D.J. Pisano and F.J. Lockman, "Completing the Census of HI in the Circumgalactic Medium of M3."
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+2. N. Pingel, "Revealing the spatial distribution of the ultra-diffuse HI reservoir around NGC 891."
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 [<< Section 2.3](/2.3)
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