Huawei revealed the depth of its frustration in mid-February when it published a surprisingly candid open letter on its website inviting the U.S. government to formally investigate the various claims that have been levied against it.

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So, it seems, the scientific uncertainty generated by not having good data from the mid-20th century is going to be repeated in the early 21st century (satellites may help on optical depth, but it would really help to know what is being emitted).

FORBES: Climategate II: An Open Letter to the Director of the National Center for Atmospheric Research