In response to my post Comment On The Northeast Heat Wave, Francis Massen has sent the e-mail below which he graciously has permitted us to post here.
Concerning your comments on the importance of moist enthalpy I would point your attention to my website and the on-line sensor measuring the WBGT (Wet bulb Globe Temperature = heatstress):
I make these measurements for the medical service of Luxembourg’s army, whose garrison is also located at Diekirch. The WBGT is measured by 3 thermometers:
W = wet bulb temperature (natural ventilation, not forced ventilation as found in psychrometers)
G = temperature inside a black painted sphere
T = dry thermometer temperature
WBGT is defined as: WBGT = 0.7*W + 0.2*G + 0.1*T
If WGCT > 32°C, all heavy work and exercises should be avoided, according to army instructions.
The graph given in the link above is interesting for it shows how different these 3 temperatures often are.
There is a paper on these measurements in French here:
Laboratoire de Physique et meteoLCD
Lycée Classique de Diekirch
32 av. de la gare