Representing Thermal Energy in the Atmosphere Based on Data on Sensible Heat, Latent Heat, and Amounts of Thermal Radiation Emitted in Some Iraqi Stations

Abstract

Thermal radiation is the process in which energy, in the form of electromagnetic radiation, is released from a heated surface in all directions and moves at the speed of light straight to its site of absorption. It doesn't need a medium to deliver it. The wavelengths of thermal radiation span from the shortest ultraviolet rays to the longest infrared rays through the visible light spectrum. The temperature of the emitting surface controls the radiant energy's distribution and intensity within this range. According to the Stefan-Boltzmann law, a surface's total radiant heat energy is proportional to the fourth power of its absolute temperature. In addition to surface net solar radiation (SNSR) and surface net solar radiation clear sky (SNSR clear sky) for noon, as well as surface net thermal radiation (SNR) and surface net thermal radiation clear sky (SNTR clear sky) for two times (00;00 am and 12:00 pm), data are collected by latent heat (LH), sensible heat (SH), and satellites recorded by the European Centre for Medium-Range Weather Forecasts Two latitudes (29.55 - 37.225) north of the equator and two longitudes (38.455 - 48.548) east of the Corniche line are covered by the 2021 over Iraq stations selection. The examination of the daily means of LH, SH, SNSR, SNSR clear sky, SNTR, and SNTR clear sky has been our focus otherwise. Spearman's test results demonstrated that, for all stations chosen in Iraq, there is a substantial correlation between thermal radiation types (SNTR clear sky, SNTR, and STRD) and latent heat and sensible heat, and that this correlation is positive for 2021. According to the test findings in Table 1, the Emadiyah station (SH & SNTR) at noon had the highest correlation coefficient in the Spearman's test (0.9), although the correlation coefficient for this station was the lowest across several stations.