Home » Current Affairs In-depths & Editorials » GS1 » Geography » Southern annular mode (SAM)

Southern annular mode (SAM)

Santhosh Kumar 22/11/2023

Southern annular mode (SAM) mind map
Discovered by INCOIS
Role
Shaping sea conditions
Indian Ocean
Description
North-south movement
Southern westerly winds
Timescales
Decades to centuries
Defined as pressure difference
At 40°S and 65°S
Importance
Influences wave patterns
Climate driver
Affects rainfall and temperature
Swell waves specifics
Regular, longer period waves
Generated by energy beneath surface
Self-sustaining
Key regions in Indian Ocean
Extratropical southern Indian Ocean (ETSI)
Tropical southern Indian Ocean (TSIO)
Phases
Positive SAM phase
Anomalous air pressure distribution
Effects on weather and wave activity
Negative SAM phase
Pressure and wind shifts
Impact on wave heights
Significance of SAM study
Predict sea state windows
Utilization by oil and shipping industries
Aids in
Coastal planning
Resource management
Disaster preparedness

If you like this post, please share your feedback in the comments section below so that we will upload more posts like this.

Related Posts

Terai Arc Landscape (TAL) mind map Overview Location Between river Yamuna and river Bagmati Encompasses Shivalik hills Bhabhar areas Terai flood plains Span 810km stretch 49,500 km² total area 30,000 km² in India Countries India Nepal Protected areas 14 in total Parsa National Park, Nepal Chitwan National Park, Nepal Banke National Park, Nepal Bardia National Park, Nepal Blackbuck Conservation Area, Nepal Shuklaphanta Wildlife Reserve, Nepal Valmiki National Park, India Sohelwa Wildlife Sanctuary, India Katarniaghat Wildlife Sanctuary, India Dudhwa National Park, India Kishanpur Wildlife Sanctuary, India Corbett National Park, India Rajaji National Park, India Pilibhit Tiger Reserve, India 9 in India 5 in Nepal Biodiversity Mammals Bengal tiger Indian rhinoceros Asian elephant Gaur Hispid hare Sloth bear South Asian river dolphin Birds Over 500 species Bengal florican Sarus crane Black stork Others Wide range of fish Amphibians Freshwater crustaceans Conservation Efforts Initiated 2001 by Government of Nepal Strategic Plans 2004-2014 2015-2025 Goals Address conservation management Tackle priority threats Ensure socio-ecological integrity WWF Involvement Since 2000 Aims for habitat integrity Establish wildlife corridors Provide alternate livelihoods Challenges Threats Forest conversion Encroachment Infrastructure development Wildlife crimes Human-wildlife conflict Unsustainable forest product extraction Climate impacts Forest fire River diversions Droughts Population Dense human population Dependence on forests for resources Significance Ecological health Survival of endangered species

Terai Arc Landscape (TAL)

18/02/2024 / Geography

tsunami-upsc

Tsunami (Causes, Effects, and Mitigation)

03/11/2021 / Disasters & Management, Geography, Policies/Plans/Guidelines/Frameworks

Assam-Mizoram Border Dispute

Assam-Mizoram Border Dispute

28/07/2021 / Centre-State-State Relations, Places/Locations (Map)

newsbits mindmap notes

12/06/2023 / Places/Locations (Map)

Categories: Geography

Tags: 22.11.2023, Newsbits

Subscribe

0 Comments

Inline Feedbacks

View all comments

X