Mapping Philippine Vulnerability to Environmental Disasters

<<< Previous Next >>>

The Philippines is prone to various climate/ weather-related hazards because of its location in the tropics, along the path of typhoons, monsoons and El Niño-La Niña.

RISK TO PROJECTED TEMPERATURE INCREASE

The areas most at risk to temperature increase during the projected 2080 climatology are Mindanao and Central Visayas.

Risk to Projected Temperature Increase

Risk to Projected Temperature Increase

The top 20 provinces at risk to projected temperature increase are:

  1. Sulu
  2. Basilan
  3. Lanao Del Sur
  4. Maguindanao
  5. Lanao Del Norte
  6. Davao Del Sur
  7. Zamboanga Del Sur
  8. Tawi-tawi
  9. Misamis Occidental
  10. Camiguin
  11. Siquijor
  12. Misamis Oriental
  13. Cebu
  14. Agusan Del Norte
  15. Zamboanga Del Norte
  16. Albay
  17. Sarangani
  18. Negros Oriental
  19. Negros Occidental
  20. Ifugao
^top
RISK TO PROJECTED RAINFALL CHANGE

The map of risk to projected rainfall change shown below incorporates both rainfall decrease during the dry season and rainfall increase during the wet season. The areas most at risk to projected rainfall changes are Central, South and Southeast Luzon and Eastern Visayas

Risk to Projected Rainfall Change

Risk to Projected Rainfall Change

The top 20 provinces at risk to projected rainfall change are:

  1. Albay
  2. Pampanga
  3. Ifugao
  4. Rizal
  5. Cavite
  6. Sorsogon
  7. Laguna
  8. Biliran
  9. Batangas
  10. Pangasinan
  11. Masbate
  12. Metro Manila
  13. Tarlac
  14. Nueva Ecija
  15. Northern Samar
  16. Aklan
  17. Capiz
  18. La Union
  19. Western Samar
  20. Romblon
^top
RISK TO TYPHOONS

Northern Luzon, Southeastern Luzon and Eastern Visayas are the areas highly at risk to the occurrence of tropical depressions, tropical storms, typhoons and super typhoons.

Risk to Typhoons

Risk to Typhoons

The top 20 provinces at risk to typhoons are:

  1. Cagayan
  2. Albay
  3. Ifugao
  4. Sorsogon
  5. Kalinga
  6. Ilocos Sur
  7. Ilocos Norte
  8. Camarines Norte
  9. Mountain Province
  10. Camarines Sur
  11. Northern Samar
  12. Catanduanes
  13. Apayao
  14. Pampanga
  15. La Union
  16. Nueva Ecija
  17. Pangasinan
  18. Masbate
  19. Tarlac
  20. Western Samar
^top
RISK TO EL NIÑO

Areas highly at risk to El Niño-induced drought are Central and West Mindanao.

Risk to El Niño

Risk to El Niño

The top 20 provinces at risk to drought are:

  1. Sulu
  2. Basilan
  3. Maguindanao
  4. Lanao Del Sur
  5. Lanao Del Norte
  6. Davao Del Sur
  7. Misamis Occidental
  8. Sarangani
  9. Zamboanga Del Sur
  10. South Cotabato
  11. Zamboanga Del Norte
  12. North Cotabato
  13. Sultan Kudarat
  14. Siquijor
  15. Tawi-tawi
  16. Negros Oriental
  17. Camiguin
  18. Davao del Norte
  19. Misamis Oriental
  20. Bukidnon
^top
COMBINED CLIMATE- AND WEATHER-RELATED RISKS

The aforementioned process for computing for risk was performed to map the risk to projected rainfall change, risk to projected temperature increase, risk to typhoons and risk to El Niño-induced drought. A composite risk map portraying the combined risk to all these climate- and weather-related disasters was obtained by summing all the risk scores, as in the equation below:

RC = RTY + RRC + REL + RTI

where

RC = Risk to Climate/Weather-Related Hazards

RTY = Risk to Typhoons

RRC = Risk to Rainfall Change

REL = Risk to El Niño

RTI = Risk to Temperature Increase

The results were again normalized within a 100-point scale.

Summing the four individual risk scores reveals that the areas most at risk to climate- and weather-related risks in general are Southeastern Luzon and Eastern Visayas. This indicates that the risk to typhoons and risk to projected rainfall change dominate the sum. The lower composite risk scores of Mindanao likewise indicate that although Mindanao has higher risk to temperature increase and El Niño-induced drought compared to other areas, the difference in the scores is not large.

Combined Risk to Climate Disasters

Combined Risk to Climate Disasters

The top 20 provinces at risk are:

  1. Albay
  2. Pampanga
  3. Ifugao
  4. Sorsogon
  5. Biliran
  6. Rizal
  7. Northern Samar
  8. Cavite
  9. Masbate
  10. Laguna
  11. Batangas
  12. Sulu
  13. Western Samar
  14. Nueva Ecija
  15. Tarlac
  16. Pangasinan
  17. Basilan
  18. Metro Manila
  19. Camarines Sur
  20. La Union
^top
<<< Previous Next >>>