Atmospheric gravity waves are disturbances that move energy and momentum through the atmosphere, much like how waves propagate in fluids. They play a critical role in shaping weather patterns and the general circulation of the atmosphere, especially in the upper layers. These waves can be detected using satellites, high-altitude balloons, and ground-based instruments. However, because each type of instrument observes different parts of the atmosphere in different ways, comparing their results depends on the analysis approach and observational properties of the instrument. In this study, we analyse gravity wave data from a wide range of instrumentsincluding several satellite sensors and ground-based systems located in northern Scandinavia. These tools observe from different perspectives and cover the region from just above the weather systems (the tropopause) up to near the edge of space (the lower thermosphere). By applying consistent analysis methods across all instruments, we found that despite their differences, the data show similar seasonal patterns. Specifically, gravity wave activity tends to be weakest in autumn and strongest in winter, particularly just below the mesopause (around 90km altitude). We also compare these patterns with those found in the Southern Hemisphere to understand how gravity wave behaviour differs between the poles.