1. Climate Resources Research Express is an internal publication sponsored by Meteorological Cadre Training College of China Meteorological Bureau. Its main contents include research reports, abstracts and dynamic express reports on climate resources. It has not gone through the formal publishing and distribution process and does not conform to the definition of a periodical.

2. Periodicals are periodical publications, usually published by professional editorial boards or academic institutions. It has a strict review and publication process, aiming at promoting academic exchange and knowledge dissemination. However, these elements are lacking in Climate Resources Research Letters.