Image cropping only from top
I just tried this on my D7 site I am making and if you go to admin/config/media/image-styles/list you can add a new style. Inside the new style you add an effect to crop and then you can choose the anchor point. The anchor point will allow it to crop from the top instead of equally top and bottom. You can then set your field to display using that style in the display settings or in views or whatever you showing it in.