1 A review of research involving human subjects by the IRB chair or by one or more experienced reviewers designated by the chair from among members of the IRB in accordance with the requirements set forth in 45 CFR 46.110. 2  Experimental subject (as defined by Department of Defense, or DOD).
Anvil clouds are the icy upper portions of cumulonimbus thunderstorm clouds that are caused by a rising of air in the lower portions of the atmosphere. When the rising air reaches 40,000-60,000 or more feet, it tends to spread out in a characteristic anvil shape.
Final Conclusions and Review. 1  Thunderstorm cloud base is at the LCL. 2  Thunderstorm anvil is at the LOC. 3  Warm humid boundary-layer air (i.e., air near the ground) is capped by a convective inhibition (CIN) region that prevents thunderstorm formation. 4  CIN bottom is at Zi, and CIN top si at the LFC.