The NASA link you posted is materially better, because it links in an obvious way to the ApJ paper itself (http://imgsrc.hubblesite.org/hvi/uploads/science_paper/file_...). I could not find such a link in the phys.org page.

The paper link is worth following if you're interested.

It describes using an exoplanet general circulation model (atmosphere model) to recover the temperature-vs-pressure profile within the exoplanet atmosphere - pressure being a proxy for height (Fig. 11a). They also retrieve temperature-vs-longitude.