As a research-based, proposed activity comprises two main parts. The first part aims at developing high spatiotemporal resolution datasets of the Asia-Pacific LTLO and geophysical variables to fill spatiotemporal data gaps which is relevant to focus activity or high-priority interest (i) (see p. 3 of Call for Focussed Activities under APN’s Climate Adaptation Framework). Practically, relevant to high-priority interests (i) and (ii), the first part comprises calibration/validation of satellite data/model estimation by using in situ data collected and shared by collaborators, and as one of the project contributions, the developed datasets will be launched on the JAMSTEC’s web/server to be shared with end-users. As for the second part which is relevant to high priority interests (iii), (iv), and (vii), the activity will utilize constructed high-resolution LTLO and geophysical datasets to assess the impacts of climate changes on terrestrial/marine LTLO modification, vulnerability, and expected human/economic risks, based on which climate change adaptation and mitigation action plans will be recommended. For the success of the proposed activity, communications among the collaborating scientists, between scientists and stakeholders (e.g., local government, etc.) are needed and valuable for making recommendations to policy/decision-makers to implement climate change adaptation and mitigation based on scientific knowledge gained from this proposed activity, thereby relevant to high priority interest (v). In line with the UNFCCC and relevant to high priority interest (vi), participating scientists will develop regional datasets, models, methods and implement generated information in different areas surrounding their countries, thereby promotes regional capacity development (especially in developing countries).