TI: Variations in the underlying surface temperature and the problem of closure of the heat balance equation LA: Russian AU: Kukharets_VP, Tsvang_LR NA: RUSSIAN ACAD SCI,OBOUKHOV INST ATMOSPHER PHYS,PYZHEVSKII PER 3,MOSCOW 109017,RUSSIA JN: IZVESTIYA AKADEMII NAUK FIZIKA ATMOSFERY I OKEANA, 1999, Vol.35, No.2, pp.207-214 IS: 0002-3515 DT: Article AB: The results of measurements of the components of the heat balance equation fur the land surface and of time variations in land surface temperature are given. It is shown that the daily regime of the exchange between the atmosphere and the underlying surface is essentially nonstationary. In this connection, the authors propose that, instead of the heat balance equation, the heat influx equation should be used in studying heat balance. KP: TURBULENT EXCHANGE, ENERGY-BALANCE, FLUXES, INHOMOGENEITIES, RADIATION, LAYER CR: ANDRE_JC, 1990 Vol.50 p.77, BOUND-LAY METEOROL BOLLE_HJ, 1993 Vol.11 p.173, ANN GEOPHYS BRAUD_I, 1993 Vol.66 p.173, BOUND-LAY METEOROL