Calculating the Wind-Chill Index for Selected Stations in Iraq


The Wind-Chill Index (Ko) is used to express a sense of human comfort depends on where the wind speed and temperature together, if considered the human body is a thermal machine liberate energy on an ongoing basis anything that affects the heat loss from the body, which in turn affects the nature of the sensation rate warming to his body and thus affect the rest, and can predict all sense of human beings too hot or cold through calculate the Wind-Chill Index. The aim of this research to clarify the relationship between air elements of each of the temperature and wind speed, can be human comfort through calculate the Wind-Chill Index, using temperature and wind speed data for the period (2005-2015) of the general body from the Iraqi meteorological organization and seismology for selected stations in Iraq (Mosul, Baghdad and Basra), by using of statistical sophisticated programs (Simple Linear Regression and Spearman Rho Test), It was found that the monthly average calculation for the period of the study Wind-Chill Index that the highest value for the index were in Baghdad station 642.47W/m2 for the month JAN, and it found that the lowest value was in Basra station -193.26W/m2 for the month JUL, and found when the seasonal average for calculate the Wind-Chill Index, the winter has high values in addition to the month MAR also has high values in the Mosul and Baghdad stations, except Basra station the month MAR is considered ideal, either for the summer months, it owns and lowest values in Basra and Baghdad stations, where he extends decline to include the month of MAY of the spring and the month SEP of autumn, either Mosul station, the decreasing values includes the month SEP of all autumn, but the rest of the months illustrates months close to human comfort, except Baghdad station the month NOV is a cool, also found through analysis the annual average for Wind-Chill Index the highest value was in Mosul station 288.53 W/m2 in 2013, the lowest value of Basra station 146.45W/m2 in 2015, and found through the statistical operations between temperature and Wind-Chill Index that there is a strong inverse relationship degree of correlation -0.99, as well as the relationship between wind speed and Wind-Chill Index, is a strong inverse relationship, Medium and low in Mosul station reverse correlation is weak the rank correlation -0.252, the station Baghdad high inverse correlation degree of correlation -0.748, while the Basra station, it is an inverse relationship to moderate correlation -0.594.

Keywords: Human comfort, Iraq, Spearman Rho Test, Temperature, Wind speed

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