Changes in severity and frequency of extreme weather and climate events and consequent changes in behaviour
  • Dear Participants,

    Welcome to the last round of this dialogue being run concurrently with the 18th Conference of the Parties (COP18) of the UN Framework Convention on Climate Change (UNFCCC) currently underway in Doha, Qatar.

    Weather patterns are changing in many parts of the world and many have experienced extreme weather events in new locations, at unusual times of the year or with increased severity.

    This is the focus of this first thread of this round where we urge you to share your experiences on the following important question:
    Is there evidence of a change in the severity and frequency of extreme weather and
    climate events in your region? Has this led to changes in behavior?

    We look forward to hearing about your experiences and observations.
    Warmly,
    LOY REGO
    Facilitator, First Online dialogue on Post 2015 DRR Framework
  • Two comments from Namibia, the “driest country in sub-Saharan Africa”.

    (1) After a prolonged dry period, we experienced disastrous floods in 2008, 2009, 2010 and 2011. With everybody happy to attribute this to “climate change”. But records show that the (hydraulic) magnitude of these floods was lower than similar floods in the 1960s and 1970s. The differences were the impact, with more people, more animals, more crop agriculture and more infrastructure in the flood-risk areas, and the press coverage, with Namibia reaching CNN.

    (2) The concept (or fiction – for Namibia?) of climate change has resulting in a “laissez-faire, laissez aller” approach. We can’t foresee what will come and we can’t do anything about it. Two quotations:
    “Regional planning efforts, including infrastructure, must embrace the widely-accepted position among water scientists that “stationarity is dead”, historical flow series cannot be used reliably to predict future flows (mean, variability, or periodicity), and it will be many years before reliable new flow series (stochastic series) can be generated. “ (GIZ expert)
    “This is a battle against nature. It’s not due to poor workmanship on behalf of NamWater. The problem could be worse tomorrow because of another flood. We can’t control nature. NamWater is doing all it can, but nature may have other plans.” (Namibian official)

    The above comments are not meant to denigrate possible future climate change. But in the process, we risk to ignore factual present climate variability.

    Guido Van Langenhove
    Head: Hydrologcial Services Namibia
  • Though climate is changing and impacting nature adversely leading to natural disaster though it partly involve human actions too. I totally agree that weather has changed extremely and the adverse effect can be seen shortly.

    The major concern is that in the remote areas of India people do not understand the concept of Climate Change. Mostly, as we see in India there are certain places where flood occur frequently and destroy the cropping pattern, soil condition and entire livelihood and the local community reside in that areas are not much resilient. They feel that it God's curse on them. Flooding is of course a natural disaster but its origin comes from climate change. The frequency of occurrence has increased a lot but behavioral change is not seen much.

    Risk to life and property is increasing day by day while our capacities are not up to the mark.
  • Mountain & Glacier Protection Organization Pakistan
    Guido i think i would have to agree with you. 2010 floods in Pakistan were the worst since last 80 years. Recently a relationship was seen between El-Nino and monsoon rainfall and found a negative trend. In 2000 and 2002 Pakistan faced a first time drought situation in 120 districts and it was found that El Nino pushed a high pressure over most of India including Pakistan that stopped the passage of monsoon rains causing droughts in pakistan.
    Climate change is a total reality and now its time to accept it and make global policies. The more we are connected the more chances of survival. And one fear that i have is since no country has a great coping capacity towards extreme natural events that we are witnessing Big Dams and Nuclear stations should be seen as a threat for the world.
  • Dear Guido,

    Thanks for the post. Do elaborate a bit though, because while you appear to challenge "climate change" you are highlighting a series of extreme weather events that Namibia was unprepared for. Also do comment on how "the too much water" flood offered opportunities if any to recharge ground water, and whether there were lost opportunities in not managing better a 'welcome" flood .

    I look forward to a follow up post from you.

    LOY

    Dear Loy
    Thanks for follow-up. It wasn't my intention to challenge climate change, and I tried to state that at the end of my comment. I merely tried to say that not every natural occurrence of floods is to be attributed to climate change. I will send a longer comment by this evening, although I don't want to be enticed in a forever debate. We all know that climate change is there for temperature rise and for rising sealevels. But we don't know about riverflows and floods in Namibia.
    Regards
    Guido Van Langenhove

    Dear Loy
    Again, it isn’t my intention to challenge climate change. I merely wanted to state that not all extreme events should be attributed to climate change and that management (preparedness, readiness, monitoring, warning, response, mitigation, prevention) of such events is not to be done only or mainly in function of climate change.
    Meteorological extremes are climate/weather features. Floods, or in general other hydrological extremes (water resources droughts), are results of climate/weather extremes interacting with other factors. In Namibia, riverflows in general and floods in particular are the result of the interaction of rainfall and terrain response. Disaster impacts are also influenced by exposure and vulnerability factors, which are mainly human decision-based.
    Analyses of rainfall series in Namibia have shown no definite change in magnitudes and patterns so far. Climate forecasts show the widest range and are not even agreeing on the direction: more or less rains, higher or lower intensities at increased or reduced frequencies.
    Analyses of flood series in Namibia have also shown no definite changes in magnitudes and patterns so far (and I think this is world-wide). Models show that the impact of human-induced changes, urbanization, deforestation, different/better land uses, abstractions, reservoir regulations, may have much more impact than climate change.
    Impacts of recent floods in Namibia have been disastrous because they had been absent for so long.
    Namibia always had high variability in weather/climate and hydrology. And management should be done for this variability, and it will then also cover climate change. But now climate change has become the buzzword that obscures everything.
    Again, my comments are regarding riverflows and water resources in Namibia. Nothing less and nothing more.
    Regards
    Guido Van Langenhove



  • Dear participants in the dialogue,

    Thanks to Guido, Priya and Babar for their posts on the occurrence of extreme weather events in specific locations in Namibia, India and Pakistan.

    Guido draws our attention to the fact that while the hydraulic magnitude of recent floods was lower than similar events in the 60s and 70s, the impact was more severe due to higher exposure and vulnerability of people, crops and livestock. He emphasized that human induced changes such as urbanization, deforestation, land use, and reservoir regulations were as much causal factors as climate change. He calls for better management of the climate variability these events represent, which will then enhance our capacities to deal with climate change.

    Priya and Babar also call for improved preparedness and management of floods and drought and building awareness and capacities of local communities to become more resilient.

    What are your experiences of extreme weather events in your countries? How well prepared are communities and local administrations? We look forward to hearing from you.

    LOY

  • The backdrop for the Himalayan region which the post Hyogo framework must address is as follows :-

    1. Rainfall patterns are undergoing a perceptible change with
    a) Winter rains almost vanishing, as such we would probably have 6 months of drought-like conditions followed by 6 months of rain (May-Oct, during the south west monsoons.) Thus, with a large number of natural springs drying up, we could expect a severe drinking water crisis looming in large parts of the mountainous regions in the years ahead.
    As such there is an urgent necessity to think about about rain water harvesting technologies/methods and large scale implementation thereof.
    b) Also rainfall during the monsoons in the mountains which was characterized by periods of prolonged drizzle is changing to a pattern where we get heavy showers at night for a few days followed by less or no rain during the day.
    c) Heavier showers instead of drizzle results in more runoff which in turn causes :-
    i) Increased soil erosion and landslides.
    ii) Failure to recharge underground aquifers which in turn would add to the water shortage. This brings about the question of learning to recharge acquifers towards which some work has been done in the state of Sikkim (India).
    d) Also as it happened in 2012, the onset/withdrawal of the monsoons may itself be changing and may require changes in type of crops or the plantation season.
    e) In Kalimpong (where SaveTheHills, a regd NGO working on the landslide problem of the Darjeeling-Sikkim Himalaya, is based) we had a mild monsoon this year but a rainfall pattern which was earlier considered abnormal but is now becoming normal is that of Sep2012 when we received 84% of the monthly rainfall in one week (10-17Sep2012), the rest of the month being largely dry.
    2. Other crucial issues in the hills are the tremendous anthropogenic interference taking place and the impact of
    a) Population growth / tourism, on the fragile mountain environment. (The population of Darjeeling town swells to almost double the 1,842034 during the tourist season)
    b) Developmental activities such as
    i) construction of a large number of dams, which are resulting in big mountain rivers like the Teesta almost becoming dry during the non-monsoon periods.
    ii) wide spread construction of roads often by unqualified people.
    iii) sand mining and stone quarrying along river beds which has resulted in the removal of almost all sand and boulders for construction purposes.
    c) irregulated, unplanned and rampant construction activities in over-crowded hill towns in seismically vulnerable areas.
    3. Thus with so much human interference in the mountains, we may well be facing a scenario where the incidents & intensity of landslides increase even as the rainfall actually decreases. Scientists have carried out a tremendous amount of research on the science of landslides but no serious work has been done on human-induced landslides (relatively small/shallow landslides in populated areas caused by mainly drainage problems, construction of roads etc), which are turning out to be number one cause of landslide fatalities.
    4. Lastly and most importantly, the post Hyogo framework for India must ensure speedy and rigorous implementation of DRR activities and regular monitoring of the implementation at all levels.



  • En ce qui concerne les preuves de changement climatique dans mon pays, je dirai à l'instar de ce que nous constatons à travers le monde que les phénomènes ou les aléas climatiques sont nombreux ces dernières années. A titre d'exemple je citerai les nombreuses inondations que nous connaissons chaque année en Algérie et pas seulement en hiver, et à travers tout le pays y compris dans le sud (sahara), faisant de nombreuses victimes en raison du type de phénomène qui se caractérise par des pluies diluviennes qui s'abattent dans un laps de temps relativement court provoquant des flashflood au niveaux des oueds qui débordent et qui emportent tout sur leur passage.
    Les services de la météo estiment toutefois que ces changements de climats sont des phénomènes normaux en se référant à l'historicité des évènements. En tous les cas les catastrophes sont là et nous interpellent. Et comme je l'ai signalé dans ce débat l'étude en cours sur la vulnérabilité d'Alger aux changement climatique changera sûrement les comportements.
  • Dear participants,

    Thanks to Praful and Rabah for their posts on the occurrence of extreme weather events in the Himalayan region of North East India and Algeria and the Saharan region respectively.

    Rabah points to unusual incidence of torrential rain and unexpected flash floods which inflict severe damage in ‘wadis”, and hopes that the ongoing Algiers study will give some ideas for adaptive behavior. Praful shares with us the changing rainfall patterns in the Himalayan foot hills, the reduced ‘winter rains’, drought like conditions and the impact on depleted aquifers. He points out to exacerbating ‘anthropogenic interference’ and unsustainable mountain “development ‘activities resulting in human induced landslides, and identifies some ‘solutions’ in terms of rainwater harvesting, changes in type of crops or the plantation season and better planning of construction and water management.

    What extreme climate events do you experience in your region? Have you had experience of implementing DRR actions in these contexts?

    Do share with us your experience,

    Warmly,

    LOY
  • Dear colleagues,

    The climate is changing at global level which affects regions and local areas too.According a recent report of BBC(Urdu) news"the ice sheets melting faster at poles than before , So far, that's only added about half an inch (1.3 centimeters) to rising sea levels, not as bad as some earlier worst case scenarios. But the melting's quicker pace, especially in Greenland, has ice scientists worried." This indicates the drastic change in the climate.

    Pakistan is also facing the climate change issue.The drought from 1997-2001 badly affected the entire country as a whole. The crops and livestock damaged and also caused internal displacement of people in search of food , water and livelihood sources.Different diseases caused harm to human lives, plants and animals. Agricultural land became barren and the country faced water shortage. Ultimately the community faced stress situation and poor one further faced tough time.Internal displacement caused social issue like disturbance of social life,conflicts and even increased crimes rate.

    The northern part of Pakistan is containing the large glaciers which are melting faster as a result of climate change. Many parts of upper areas are under the risk of GLOF and snow avalanches.The people feel insecurity in such situation.

    The Flood of 2010 in the country is one biggest example of climate change in Pakistan, which disrupted infrastructure, public places and markets throughout the country. The loss of economy was very high and social networks disturbance gave birth so many issues.The heavy flood in Sindh province in 2011 is another example .The affected communities still passing through uncertainty and feel much stress during the monsoon season.

    Numerous changes have been occurred in the behavior of the people; they are thinking about safe dwellings, sustainable livelihood sources,change in crops patron and preparedness. The want know the change and adaptation.The rigid and culturally strict people even feel and recognize the importance of awareness regarding this issue.
  • Vulnerability to poverty is triggered by changes in severity and frequency of extreme weather, climate events, consequent changes in behaviour and deepened by climate change impacts. Agriculture and productivity are drastically reduced by extreme and adverse climate events such as droughts and floods that destroy agricultural systems in developing countries. Best practices through lessons learned for vulnerability to climate change and closely linked to disaster risk reduction are methods to increase vegetation and crops of small agricultural productions. The purpose of challenge, approach of intervention and process of economic development should minimise disruption of ecosystems and community systems that exists in nature and harmony. Sustainable development in most circumstance of changes in extreme weather and climate events is framework of action for local and global economic reform to develop partnerships, community-based issue analysis, action planning, monitoring and implementation.
  • In response to the question raised earlier in the dialogue, ‘What extreme climate events do you experience in your region? Have you had experience of implementing DRR actions in these contexts?'

    Water crisis is a major issue for Japan experiencing weather-related hazards. Edogawa city in Tokyo region is a low lying city with floods and flood tides that characterise different vulnerabilities to other parts of Asia, prone to floods. Climate change increase flooding, disaster risk reduction is important and in Japan, water adaptation strategies are implemented at institutional levels.
  • Dear participants,

    Many thanks to Jalil and Tomoko for their posts in what has been a very lively conversation.

    Jalil narrates the experience of the widespread floods of 2010 and Sindh floods of 2011; and the apprehensions of people in Northern Pakistan about glacier melt and consequent GLOFs or snow avalanches. He shares that the rigid and culturally strict people recognize the importance of awareness on this issue have begun to think about safe dwellings, sustainable livelihood sources, change in crop patterns and preparedness. Tomoko talks of the vulnerability to floods of Edogawa city in Tokyo region, which shares low lying characteristics with other Asian cities. She recognizes that the process of economic development should minimize disruption of ecosystems and community systems that exists in harmony in nature and therefore sustainable development is the most appropriate framework of action for local and global economic reform and to develop partnerships, community-based issue analysis, action planning, and implementation.

    These 12 posts have seen a lively reporting of specific changes in patterns of extreme climate and weather event, and while there has been some debate on whether this reflects variability or longer term change, there is unanimity about the need for improved preparedness and the building of resilience to deal with extreme weather events. Such evidence from ground level in at risk regions of Asia, Africa and Europe, bolsters the case for achieving better synergy and linkage between DRR and CCA in building adaptive capacity and resilience to disaster and climate risks.

    Thank you to all writers and readers of this dialogue for your whole hearted and engaged contributions and participation.

    Warmly,

    LOY
  • Post From Mr Pios Ncube, Zimbabwe on December 5

    Inadvertently posted in the activity wall

    The discussion on DRR and Climate change as well as severity of climatic hazards is an interesting one. Well the fact of the matter is that the climate has already changed and the severity of weather related hazards has been increasing with devastasting intensities. The main challenge in Zimbabwe and in SADC as a whole is that, the science of climate change, climate variability and disaster risk reduction is still not understood well.

    Policy makers in Zimbabwe still believe and operate in the reaction mode; where weather related hazards are still seen as 'natural disasters' or 'acts of God'; where nothing can be done by humans to prevenrt or reduce the impact.

    Most if not all, government services, Non government and the United Nations agencies work in Zimbabwe is aimed at addressing consequences of such weather related hazards instead of focusing on root causes and strengthening of institutions such as early warning systems. There is need to bridge knowledge gap

  • I’ve been following this discussion with great interest. Guido’s posts got
    me thinking about what can be done to encourage decision makers to act, even when Climate change projections, particularly at the local scale carry a fair amount of uncertainty? 

    Clearly the role of national hydro-met services and technical institutions play a huge role in explaining uncertainty, but this only happens when there are effective means of dialogue between the scientific and policy/operational communities.There are excellent examples of climate forecast applications that have been rolled out in countries such as Bangladesh where met services and agricultural extension services work with farming communities to translate seasonal forecasts(with their attendant uncertainties)  into practical action.  

    productive approaches to decision making under conditions of uncertainty applied in many locations – for instance no/low regrets options (such as investing in multi-hazard early warning systems) , scenario-based planning, regional outlook forums (such as are convened in the Greater Horn of Africa to review and “build consensus” in  interpreting season climate forecasts), or developing solutions that work across of “range of possible futures” (  http://climate-adapt.eea.europa.eu/uncertainty-guidance/topic2).

    The question remains what can be done to promote efforts such as these?  What does experience from our previous efforts in these areas tell us?

    Best, Glenn
  • Dear Participants,

    Thanks to Pios and Glenn for their posts.

    Pios points to a continuing challenge in Zimbabwe and SADC as a whole where weather related hazards are still seen as 'acts of God'; where nothing can be done by humans to prevent or reduce the impact. Even NGOs and UN Agencies work addresses consequences of such hazards instead of focusing on root causes and strengthening early warning systems. He calls on bridging the knowledge gap and promoting awareness on climate variability and change science and DRR.

    Glenn’s comment ties in well with Krishna’s post in the DRR CCA linkage thread. He is optimistic when recognizing good practice of the communication of future uncertainties achieved through the cooperation of hydromet services, technical institutions and operational administrations in climate forecast applications in Bangladesh and regional climate outlook forums in the great Horn of Africa. He cites practical examples of no/low regrets options (investing in multi-hazard early warning systems) and scenario-based planning that works across of “range of possible futures”. He calls for “adaptive institutions” that are able respond to new information about emerging risk that covers both future hazards and socio-economic vulnerabilities

    Further insights are welcomed till the end of the weekend when we will close this round.

    Thanks to all participants in this thread of 15 rich posts which I will summarize in the summary and closing remarks of this round.

    Warmly,

    LOY
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