Assertion: thermometer's temperature | /r/CapableOf | support convection
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Source sentences:
text: At the 500 hPa level, the air temperature averages −7 °C (18 °F) within the tropics, but air in the tropics is normally dry at this height, giving the air room to wet-bulb, or cool as it moistens, to a more favorable temperature that can then support convection.