treks ability is also an important part of merion matterless job because much of her work depends on the weather today she was shuttled to replace a radiation measuring device that's not going to happen. i don't want to ruin my measurements by leaving footprints we not only measure thermal radiation but also reflected radiation which tells us a lot about soil conditions affect you know reflects a lot of light but not when it starts to melt we've done a lot of tests on the annual phone me show me and a woman with him told her the snow is melting right now and footprints reproduce a darker pattern on the ground and that influences the radiation measurements on the misnomer today he can start by and for those that i'm not going. to replace the device today just wait until the snow is completely gone and there's new question michel or to quote pic of. me over the past few years we've noticed that the thaw has been starting earlier allow those old to clog it's deep that's an obvious indication of climate change and we can see it right here come on in. it i've been working at this research