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Eskdalemuir Observatory opened in 1908, sited remotely for magnetically quiet conditions. Continuous atmospheric potential gradient (PG) recordings began in 1911, using a Kelvin water dropper electrograph. Notable scientists who worked with atmospheric electricity at Eskdalemuir include Lewis Fry Richardson and Gordon Dobson. The PG measurements continued until 1981. The methodologies employed are described to help interpret the monthly data now digitally available.

The life and work of pioneer geologists such as M. Ozan Sungurlu are a historical and fundamental reference point that should be remembered by current and future generations of geoscientists. This article was written in memory and appreciation of M. Ozan Sungurlu, who made a great contribution to the field and petroleum geology of Türkiye and whose sectoral greatness in the world is undisputed.