OCR Text |
Show - 0.0* at - I - 2 - t - I Mw / « 4 m mmh / mcalcm mm grd fl? 0.3 0 to ig* f 0* 0 i/ el in ° C 20 Fig. 4. M W / ^ L as a function of ^ L + ( Q.*'" B)/ crL and eL for p = 760 torr. and never reaches even half of the latter, as shown by the relation r,- / rE = 0.118. On the other hand, the effects of the meteorological parameters on a melting surface do not depend on whether water condenses or evaporates. Three separate mass fluxes can be distinguished as the end- product of phase changes at the surface. These are more readily comparable if expressed as the thicknesses of equivalent layers of water. They are considered positive when, as a result, water of the corresponding phase is deposited at the surface. First, there is the change in quantity of ice, M£ = M, which has already been mentioned and which is depicted in Fig. 2 for p = 760 torr. 14 |