No, the journal is an English-language journal. There is usually an expectation that those who do not write English well get assistance from someone in the field who can to ensure it is clearly written.
Anyway, I have finally been convinced it's a peer-reviewed journal article that's being discussed (the rest of what's in the blog is NOT), so took some time to read and re-read to see if I could understand what they're trying to say.
The best I can understand it, since this isn't my field, is that they are taking global climate data and northern hemisphere climate data and looking for patterns within the larger pattern. So, there is the overall trend of warming in the past 120 years that they present, but within that 120 years, they're finding other smaller patterns of oscillations on a 60 year, 20 year, and 6-8 year time scale. They compare these smaller patterns within the larger pattern to CO2 patterns. While the overall trend over the entire 120 years corresponds, these smaller oscillations seem independent of the CO2 patterns, indicating additional factors contributing to climate change on shorter time scales (not too much of a surprise that there would be more than one contributing factor). They only briefly speculate what some factors might be, but that wasn't the focus of the study, so have no answers on that. What they basically seem to have done is just identify the time scale of these smaller "intrinsic" oscillations so that future studies can look for potential contributing factors based on oscillations on a similar time scale. In each of their figures, the top panel is the raw data I think (this is poorly explained), and then each panel below it shows the patterns of oscillations on the various time scales that are extracted from the larger pattern of the raw data.