Trends in SABER Kinetic Temperatures and Groundbased Airglow Temperature Measurements in Comparison to Model Simulations

Numerous studies have been done to find long-term trends in temperature measurements. We will present our trend results deduced from SABER kinetic temperature measurements and groundbased airglow temperature measurements from various sources, and compare to our model simulations of airglow intensity-weighted temperatures. Our study derives trends on F10.7, Ap index, and CO2 concentration in temperatures in the MLT region. Two airglow models, OHCD-90 and MACD-90, are used to simulate airglow intensity-weighted temperatures of O(¹S) greenline, O₂(0,1) atmospheric band, and OH(8,3) airglow under the influences of F10.7, Ap, and CO2 concentration. Our results based on the measurements show that SABER temperatures were well correlated with F10.7 but not with Ap index while meteor radar measurements (Holmen et al., 2014) showed the opposite. Our model simulation results showed that airglow temperatures correlate well with Ap but not with F10.7. More work is in progress to find the causes for the discrepancies among the studies and will be presented.