Mengenal

BATUBARA

Dosen : Ir.Syariffuddin Mahmudsyah,M.Eng.

What is Global Warming?

Throughout time the Earths climate has varied

Since the base of the Pleistocene (1.8 M ya) there have been at least 30 glacial - interglacial cycles of 40,000 years to 100,000 years duration with interglacial periods warmer than now between them

Sea level has risen 125 metres in the past 20,000 years. That 6 mm a year (arithmetic average). ICPP recently cited 2-3 mm a year one might say its slowing down. The worlds coastal tribes have flood myths because they migrated around

the world and lived upon the continental shelves

Between glacial ages the climate varies due to external and internal influences some result in cooling. Others allow the Earth to warm

There are short-term cycles e.g. El Nio, among others: for example - the 10 to 12 year long solar energy cycles, and cycles that relate to oscillation of Atlantic and Pacific ocean masses, and the Milankovich orbital cycle.

Pennekamp Park Key LargoSCOOP - Reefs keep pace with 125 metre

sea level rise

Athabasca Glacier has been

receding since the Little Ice Age

Moraine From the Little Ice Age

Akibat Pemanasan Global terjadi Perubahan Iklim