Sentences with phrase «historical aerial photo»
Using historical aerial photo analysis, soil and methane sampling, and radiocarbon dating, the project quantified for the first time the strength of the present - day permafrost carbon feedback to climate warming.
https://www.sciencedaily.com/ Not exact matches
That's according to a new review of research that combines on - the - ground observations with aerial and satellite photos, historical records and dates from cores of ice extracted from the glaciers.