Clarke was born in 1945 in Fort Smith, Arkansas to Dr. Albert Sidney Johnston Clarke II and Ruth Shaw Clarke. His father was an orthopedic surgeon which inspired his interest in physiology. Clarke's mother was a dance instructor which led to his appreciation of the arts. Clarke is the youngest of four children; his siblings are now deceased.
Clarke was married on June 28, 1970 to Peggy Crews. Their son Jonathan was born in 1975 and daughter Holly was born in 1979. The couple currently reside in Panama City, Florida.
While at Georgia Tech in 1965, Clarke earned his scuba diving certification. He later participated in the NOAA/ Navy Scientist in the Sea program in 1972. He then went to the Navy Dive School in 1980. Clarke has remained an active scuba diver throughout his career.
Physiology continued to drive Clarke and in 1976 he completed his Doctor of Philosophy by evaluating changes in physiology and pharmacology in bivalve molluscs hearts at Florida State University (FSU).
While completing his doctorate at FSU, Clarke worked as instructor and director of development in the Department of Biological and Physical Sciences at Thomas County Community College from 1975 to 1976.
Clarke accepted an appointment as a Visiting Principal Fellow at the University of Wollongong in April 1998 to advise on a doctoral project. As of 2015, Clarke has served on five thesis committees from various institutions. Advisees have included Margie E. Bolton, Elizabeth Jane McCarthy, Rungchai Chaunchaiyakul, Erich C. Frandrup, and Adam J. Smith.
US Navy career
In 1979, Clarke joined the team at the Naval Medical Research Institute (NMRI), now called the Naval Medical Research Center in Bethesda, Maryland. He was the head of the Respiratory Physiology Branch of the Physiology Division in the Diving Medicine Department. When Clarke left NMRI in 1991, he was the Diving Life Support Equipment Program Director GM-14.
Clarke led a team of researchers, scientists and engineers while at NMRI. The projects included work on diving equipment and physiology that included high frequency ventilation experiments.
At NEDU, Clarke provides scientific oversight over engineering and physiological studies RDT&E for US Navy diving operations. He also serves as an advisor for Naval Sea Systems Command policy regarding technical challenges. This work includes equipment evaluations and physiology experimentation.
Clarke's interest in writing began early. He published his first scientific article at age fifteen. While an undergraduate engineering student, he was paid for two of his articles in the Georgia Tech Engineer.
Clarke assisted his writing mentor, author Max McCoy, with a chapter taking place at NEDU in McCoy's 2004 book Moon Pool.
In 2014, Clarke published his first novel, Middle Waters. It deals with two divers that set out to rescue aliens stranded on their spacecraft at the bottom of the sea. The government is aware of their presence and very interested in the alien technology. The divers soon find themselves caught between the alien civilization and their own government as they work to avert disaster while unknowingly competing with their friends in the recovery.
Award winning author and physician Rachel Scott suggested readers not "start this read at bedtime, if you plan to get any sleep!".
Max McCoy, author for the Indiana Jones franchise from 1995 on, claimed that Middle Waters was a book he had wished he'd written and would read over and over again. This was based partially on the fact that the main character is a diving scientist, a role that Clarke knows well and expertly conveys his knowledge to the reader.
Clarke won first place in the 2010 "best first line in a comic vampire novel" contest held by the Ozark Creative Writers' Conference in Eureka Springs, Arkansas.
Morrison JB, Clarke JR (2008). "Diving Physiology: free diving, breathing apparatus, saturation diving". In: Eds., NAS Taylor, H Groeller, Physiological Bases of Human Performance During Work and Exercise.
Clarke JR (2003). "Future of US Navy Diving". In: Naval Forces Under the Sea – A Look Back, A Look Ahead: 3–90 to 3–94.
Clarke JR, Flook V (1999). "Respiratory Function at Depth". In: The Lung at Depth, Ed. CEG Lundgren and J Miller. In Series, Lung Biology in Health and Disease, Ed. Claude Enfant. New York, Marcel Dekker: 1–71.
Clarke JR (1999). "Underwater Breathing Apparatus". In: The Lung at Depth, Ed. CEG Lundgren and J Miller. In Series, Lung Biology in Health and Disease, Ed. Claude Enfant. New York, Marcel Dekker: 429–527.
Clarke JR (1996). "Measurement of average resistance in underwater breathing apparatus". In: Book III, Drilling & Production Economics: 227–230.
Clarke JR (1992). "Diver tolerance to respiratory loading during wet and dry dives from 0 to 450 msw". In: Lung Physiology and Divers' Breathing Apparatus. Ed. V. Flook and A.O. Brubakk., BPCC-AUD, Aberdeen: 33–40.
Clarke JR (1992). "Impedance and power measurements in the testing of closed circuit UBA". In: Lung Physiology and Divers' Breathing Apparatus. Ed. V. Flook and A.O. Brubakk., BPCC-AUD, Aberdeen: 85–93.
Casey L, Clarke JR, Fletcher J, Ramwell P (1982). "Cardiovascular, Respiratory, and Hematologic Effects of Leukotriene D4 in Primates". In: Samuelsson and Paoletti, Eds. Advances in Prostaglandin, Thromboxane, and Leukotrien Research Series, Vol. 9, Leukotrienes and Other Lipoxygenase Products. Raven Press, New York.
Nuckols ML, Clarke JR, Marr WJ (1999). "Assessment of oxygen levels in alternative designs of semiclosed underwater breathing apparatus". Life Support & Biosphere Science: International Journal of Earth Space. 6 (3): 239–49. PMID11542685.
Nuckols ML, Clarke J, Grupe C (1998). "Maintaining safe oxygen levels in semiclosed underwater breathing apparatus". Life Support & Biosphere Science: International Journal of Earth Space. 5 (1): 87–95. PMID11540469.
Clarke JR (1996). "A priori models in the testing of diving life support equipment". Life Support & Biosphere Science: International Journal of Earth Space. 2 (3–4): 125–31. PMID11538561.
Clarke JR (1960). "Light spectra and glucose relationships in plants". Proceedings of the Kansas Academy of Science.
Non-Refereed Journals and Reports
Clarke JR, Ferris V (2012). "The Use of One-Sample Prediction Intervals for Estimating CO2 Scrubber Canister Durations". Navy Experimental Diving Unit Technical Report 12-03.
Clarke JR (2007). "Review of MARCORSYSCOM operational requirements for Enhanced Underwater Breathing Apparatus (EUBA) using simulation software". Navy Experimental Diving Unit Technical Report 07-11 (Classified).
Clarke JR, O'Connor PE (2004). "Testing of a prototype Special Operations gas mask". Navy Experimental Diving Unit Technical Report 04-27(Classified).
Naggiar ER, Sanchack KE, Clarke JR (2002). "Comparison of Draeger Divesorb Pro to Sofnolime 812 in the MK 25 Mod 2 SEAL Delivery Vehicle, MK 16 Mod 0, and Viper VSW canisters". Navy Experimental Diving Unit Technical Report 02-02 (Classified).
Clarke JR (2002). "Evaluation of the pre-production model self-contained operational utility tank (SCOUT) high pressure air system. Navy Experimental Diving Unit Technical Report 02-01 (Classified)". Cite journal requires |journal= (help)
Clarke JR (2001). "Evaluation of the Self-Contained Operational Utility Tank (SCOUT) high pressure air system". Navy Experimental Diving Unit Technical Report 8-01 (Classified).
Crepeau L, Clarke JR (1998). "Recommended canister limits for the Draeger LAR V/MK 25 UBA using 408 L-grade and 812 D-grade Sofnolime". Navy Experimental Diving Unit Technical Report 9-97 (Classified).
Clarke JR, Knafelc M, Junker DL, Allain SC (1996). "Evaluation of the Fullerton Sherwood S-24 (SIVA) semi-closed underwater breathing apparatus". Navy Experimental Diving Unit Technical Report 9-96 (Classified).
Clarke JR, Knafelc M, Junker DL, Allain SC (1996). "Evaluation of the Draeger LAR V Nitrox (LAR 7) semi-closed underwater breathing apparatus". Navy Experimental Diving Unit Technical Report 8-96 (Classified).
Clarke JR, Knafelc M, Junker DL, Allain SC (1996). "Evaluation of the Draeger Extreme semi-closed underwater breathing apparatus". Navy Experimental Diving Unit Technical Report 7-96 (Classified).
Clarke JR, Junker DL, Allain SC (1996). "Evaluation of the US Divers DC-55 semi-closed underwater breathing apparatus". Navy Experimental Diving Unit Technical Report 5-96 (Classified).