p. 1−33
2717-3534
Vol.24/No.72
p. 35−59
2717-3534
Vol.24/No.72
p. 61−80
2717-3534
Vol.24/No.72
p. 81−103
2717-3534
Vol.24/No.72
p. 105−128
2717-3534
Vol.24/No.72
p. 129−150
2717-3534
Vol.24/No.72
p. 151−181
2717-3534
Vol.24/No.72
p. 183−204
2717-3534
Vol.24/No.72
p. 205−224
2717-3534
Vol.24/No.72
p. 225−245
2717-3534
Vol.24/No.72
p. 247−266
2717-3534
Vol.24/No.72
p. 267−291
2717-3534
Vol.24/No.72
p. 293−317
2717-3534
Vol.24/No.72
p. 319−356
2717-3534
Vol.24/No.72
p. 357−383
2717-3534
Vol.24/No.72
p. 385−403
2717-3534
Vol.24/No.72
K . Several indicators are considered to identify the front. The first of them is that the front must be at a turning point in the curvature of the temperature lines which is along the temperature gradient. The second indicator is the location of the maximum values of temperature gradient,and the third criterion is the point where the second derivative of the temperature gradient is zero. Various experiments have shown that the smaller the temperature derivative of the front temperature parameter, the less error there will be (J. Jenkner, 2009). Thus, the Front Termal Parameter (TFP), invented by Renard & Clarke (1965), was used as the main method of frontal reconnaissance. TFP = In this equation, second derivative of the temperature parameter has been used, which has converted the temperature gradient, which is a vector quantity, to a scalar quantity. Conclusion Examination of the results of objective fronts showed that the detection of fronts near the ground due to the interaction between the boundary layer and the fronts is very erroneous and the fronts are practically indistinguishable. On the other hand, at higher levels, shallow fronts at numerical output are not detected. Therefore, the appropriate level for automatic identification of fronts in the study area, 700 hPa level was selected. Examining the results, it is inferred that cold and warm fronts are often found at the bottom of the ridge and above the ridge of the upper surfaces, and these fronts, during the formation stage, are often discontinuous and gradually evolve during the developmental stages. Strengthening the front will take a more integrated form. Studies have shown that cold fronts produce stronger frontogenesis than warm fronts. Also, the output of objective fronts showed that TFP is a good parameter for detecting the front in this region and with the results of previous studies such as Hewson (1998: 49), Jenkener et al. (2010: 9), they show a good match. The results of this study can be used in the discussion of climatology and forecasting of fronts and can be helpful in the discussion of flood management due to heavy rainfall on the front.]]>
p. 405−426
2717-3534
Vol.24/No.72
p. 427−446
2717-3534
Vol.24/No.72