Planning for Climate Change - UN-Habitat

More documents

Recommendations

Info

Climate Change: A Review Three likely impacts of climate change on our cities and towns are described in more detail below. While there are certainly additional impacts generated by climate change, the three profiled below – flooding, water scarcity and the heat island effect – illustrate the range of climate impacts a community might face. As noted, impacts in each category can be expected to vary depending upon the region, size of city, and level of development. Additional information on impacts can be found in Appendix 2: Other Resources. Flooding: Climate change has the potential to increase flooding in three ways: Sea level rise: Climate change is causing higher sea levels due to increased and growing glacial and polar ice melt. It is also causing sea levels to rise by warming the oceans themselves, which causes their overall volume to increase. There are estimates from the United Nations that sea levels could rise between 18cm and 59cm by the end of the 21st century. In combination with the increased frequency and magnitude of marine storms, including cyclones, typhoons, and hurricanes, storm surges associated with these events are becoming larger and more damaging. Currently, about 13 percent of the world’s urban population (around 360 million people) live in the low-elevation coastal zones (i.e., less than 10-metres above sea level) and an estimated 10-million people are currently affected each year by coastal flooding. Small island states in the Pacific are particularly threatened by sea level rise. The impacts of sea level rise on a given city will vary depending upon its location (i.e., sea level rise will not be uniform and forecast rises are different around the globe) and level of development (i.e., some cities may have built sea walls or preserved protective coastal areas like mangrove forests, while other cities have coastlines that are more prone to erosion). Urban planners, of course, are key players in determining appropriate actions to reduce vulnerability including: the location and scale of marine defences like sea walls; the identification and avoidance of development in sea level rise hazard areas (or ensuring that new development in hazard prone areas can withstand storm surges and related hazards); and the identification and protection of shoreline areas (like mangrove forests) that provide a natural defence for storm surges and coastal flooding (while providing mitigation benefits). Increased/Intensified rainfall: Most climate scientists agree that intense, heavy rainfall events are likely to increase in frequency and magnitude in certain parts of the world because of climate change. Due to the large amount of impermeable surface areas (roads, buildings, paved areas) in cities and towns, places with inadequately designed or limited storm sewer and drainage systems will be faced with flooding during these storm events. Damages and health impacts will be compounded in areas with open sewage ditches and/or a combined sewer-storm water system that tend to be overwhelmed during storms and introduce raw sewage into the flood waters. There is a growing body 30 PLANNING FOR CLIMATE CHANGE:
Climate Change: A Review of research that indicates increased rates of injury and death from flooding in urban areas (especially in Africa, Asia, Latin America and the Caribbean) with inadequate drainage and flood protection systems. The impacts of increased/intensified rainfall will vary depending upon the region (i.e., different regions are forecast to be more subject to increased/intensified rainfall than other areas) and the urban area’s level of development and infrastructure. For example, some lesser-developed cities may have more pervious or unpaved areas where rainfall can be more easily absorbed (absorption rates will depend on how parched the unpaved or pervious land is). Other cities may have more developed storm water management systems and infrastructure with which to manage the increased/intensified rainfall events, although the intensity of the events may well overwhelm even the most comprehensive systems. Urban planners play an important role in the development and upkeep of stormwater systems and can help make sure that new roads, buildings and infrastructure include stormwater features (e.g., infiltration areas, pervious surfaces, impoundment areas, rainwater gardens) in those regions facing increased/intensified rainfall episodes. Damaged sea wall, Sorsogon City. © UN-HABITAT / Bernhard Barth A Strategic, Values-based Approach for Urban Planners 31
Page 1 and 2: A STRATEGIC, VALUES-BASED APPROACH
Page 3: PLANNING FOR CLIMATE CHANGE A Strat
Page 6 and 7: 2 PLANNING FOR CLIMATE CHANGE:
Page 8 and 9: 4 PLANNING FOR CLIMATE CHANGE:
Page 10 and 11: © Municipio de Esmeraldas © UN-HA
Page 12 and 13: Introduction With a values-based, s
Page 14 and 15: Introduction While Section 2.0 expl
Page 16 and 17: Introduction 1.3 CLIMATE CHANGE ADA
Page 18 and 19: Introduction While it is not the pr
Page 20 and 21: Introduction 1.4 KEY PRINCIPLES AND
Page 22 and 23: Introduction Exposure: Is
Page 24 and 25: Planning for Climate Change: A Stra
Page 26 and 27: Planning for Climate Change: A Stra
Page 28 and 29: Figure 4: Global and Continental Te
Page 30 and 31: Climate Change: A Review 3.2 CITIES
Page 32 and 33: Climate Change: A Review 3.2.1 URBA
Page 36 and 37: Climate Change: A Review Increased
Page 38 and 39: © UN-HABITAT / Bernhard Barth VULN
Page 40 and 41: Climate Change: A Review 3.2.3 CLIM
Page 42 and 43: Climate Change: A Review Local
Page 44 and 45: Climate Change: A Review Table 4: U
Page 46 and 47: Climate Change: A Review Any of the
Page 48 and 49: Climate Change: A Review PLANNING F
Page 50 and 51: STEP 1 Module A: What’s Happening
Page 56 and 57: Municipal workers constructing a wa
Page 60 and 61: Men and women take part in Communit
Page 84 and 85:
STEP 3 Module A: What’s Happening
Page 86 and 87:
Page 88 and 89:
Page 90 and 91:
Page 92 and 93:
Page 94 and 95:
Page 97 and 98:
ARE WE DOING IT? Module B WHAT MATT
Page 99 and 100:
Module B: What Matters Most? STEP 4
Page 101 and 102:
Page 103 and 104:
Women in an informal market in Monr
Page 105 and 106:
Page 107 and 108:
Page 109 and 110:
ARE WE DOING IT? Module C WHAT CAN
Page 111 and 112:
Module C: What Can We Do About It?
Page 113 and 114:
Page 115 and 116:
Page 117 and 118:
Page 119 and 120:
Page 121 and 122:
Page 123 and 124:
Page 125 and 126:
Page 127 and 128:
Page 129 and 130:
Page 131 and 132:
Page 133 and 134:
Page 135 and 136:
Page 137 and 138:
ARE WE DOING IT? © EPI 2010 Module
Page 139 and 140:
Module D: Are We Doing It? STEP 8 S
Page 141 and 142:
Module D: Are We Doing It? STEP 8 H
Page 143 and 144:
Module D: Are We Doing It? STEP 8 e
Page 145 and 146:
Module D: Are We Doing It? STEP 9 A
Page 147 and 148:
Appendix 1 - Tools TOOL 1-A Step 1,
Page 149 and 150:
Appendix 1 - Tools TOOL 1-C Step 1,
Page 151 and 152:
Appendix 1 - Tools TOOL 2-b Step 2,
Page 153 and 154:
Appendix 1 - Tools TOOL 2-c Step 2,
Page 155 and 156:
Appendix 1 - Tools TOOL 3-B Step 3,
Page 157 and 158:
Appendix 1 - Tools TOOL 3-C Climate
Page 159 and 160:
Appendix 1 - Tools TOOL 3-E Step 3,
Page 161 and 162:
Appendix 1 - Tools TOOL 3-G Step 3,
Page 163 and 164:
Appendix 1 - Tools TOOL 4-B Step 4,
Page 165 and 166:
Page 167 and 168:
Appendix 1 - Tools TOOL 5-C Step 5,
Page 169 and 170:
Appendix 1 - Tools TOOL 5-E Step 5,
Page 171 and 172:
Appendix 1 - Tools TOOL 5-f sector:
Page 173 and 174:
Appendix 1 - Tools TOOL 6-A Probabi
Page 175 and 176:
Page 177 and 178:
Appendix 1 - Tools TOOL 7-B Descrip
Page 179 and 180:
Appendix 1 - Tools TOOL 8-A Manager
Page 181 and 182:
Appendix 1 - Tools TOOL 8-b Adequac
Page 183 and 184:
Appendix 2 - Other Resources It inc
Page 185 and 186:
Appendix 2 - Other Resources Title:
Page 187 and 188:
Appendix 2 - Other Resources Title:
Page 189 and 190:
Appendix 2 - Other Resources Name o
Page 191 and 192:
Appendix 2 - Other Resources Target
Page 193 and 194:
Appendix 3 - Glossary of Terms (UNF
Page 195 and 196:
Appendix 3 - Glossary of Terms Sens
Page 197 and 198:
Appendix 4 - Global Climate Initiat
Page 199 and 200:
Appendix 4 - Global Climate Initiat
Page 201:
Appendix 5 - References and Noted R
show all

Planning for Climate Change - UN-Habitat

Create successful ePaper yourself

Delete template?

Save as template?