Sunday, June 16, 2019

Tit-for-Tat in International Trade is a Zero Sum Game

The global trade war is intensifying with every passing day. And it is making markets jittery.

While the China-US spat is the most discussed in public media, there is simmering tensions, if not fully blown trade wars, between US and EU, Japan and US, and now India and the US. According to Reuters, India announced it will impose tariffs (some as high as 70%) from the 16th June 2019 on 28 US products, including almonds and apples, in retaliation to Washington's refusal to exempt Delhi from higher taxes on steel and aluminum imports.

These spasms in international trade couldn't have come at a worse time. The global economic outlook doesn't look great with most projections pointing to a slump in growth within the next eight to twelve months (if not sooner). There is already uneasiness in most industrial economies about the projected sluggish growth, not least in Europe, thanks to the unending debate about Britain's intended withdrawal from the European Union, Brexit.

In an oped in the Namibian of July 13, 2018, I argued that "the US-China trade war should be a source of consternation for many countries". As I pointed out then and here, trade wars do not only have economic consequences, equally, if not more so, they are a problem in politics as well. There is enough reason to be concerned about the direction that the emerging global order is taking which is arguably more protectionist.

A tit-for-tat in international trade is a zero sum game that will leave the global economy worse off even in the most optimistic outcome. Suggesting that international trade wars is a threat to peace and prosperity would be a gross understatement.


Wednesday, February 19, 2014

Impact of 4 Degree Celsius Warming

Downscaled Global Climate Models (GCMs) projections across three different greenhouse gas emissions scenarios (SRES A2, A1b, B1), all downscaled to a 0.5 degree resolution (~50 km) for the time periods of 1961-1999, 2046-2045, and 2071-2100 show the likely trajectory the climate is likely to take in the coming decades. From different types of climate analyses, we can predict how much more often extreme events, such as droughts and flooding, will occur in the future.

The projected mean temperature and rainfall (from the World Bank Climate Change Knowledge Portal Website, http://sdwebx.worldbank.org/climateportal/index.cfm) for the period 2046-2065 and 2081-2100 (A2 emissions) is shown in the following panels.








These temperature and precipitation projections form the basis of climate metrics and impact modeling results on agriculture, water supply, fire risks, human health, urban energy demand, biodiversity, etc., which can be used to support climate planning and action. The results are not reproduced here due to space limitation. However, suffice it to say that both temperature-based derivative metrics (e.g., average high and low temperature; hottest and coldest temperature; hot days temperature; number of frost days; number of warm days and nights; number of cold days and nights; heat wave duration index; growing degree days; heating degree days; and cooling degree days) and precipitation-based derivative metrics (i.e., total precipitation; consecutive dry days; number of dry periods; number of wet days; wet days; wet day rainfall; 5 day rainfall; and daily rainfall) calculated from daily downscaled future climate projections are robust and have applications in planning crop productivity, water supply, human health, energy demand, and ecosystem resilience in a changing climate. This resource, among others, must be used to inform local and national decision making processes about which policies or specific measures are needed to tackle climate impacts.

Naturally, future climate change analysis is more complicated than it is for the past because there is not a single, but many sets of time series projections from different GCMs runs with a range of CO2 emissions scenarios. For example, using ensemble analysis to combine the analysis of multiple GCMs and quantify the range of possibilities for future climate under just one emission (A2) scenario, we develop the following climate model maps of ensemble average for change in temperature and precipitation in 2046-2065 and 2081-2100.






These ensembles of climate models tell a story; mean temperatures will increase while annual precipitation will decline. But, this is not futuristic; the impacts of a changing climate are already being felt, with more frequent droughts and more floods, which are forecast to increase with further climate change. This, according to the World Development Report 2010, “is taxing individuals, firms, and governments, drawing resources away from development … continuing climate change, at current rates, will pose increasingly severe challenges to development.” The WD Report further notes that “even relatively modest additional warming will require big adjustments to the way development policy is designed and implemented,…. changing the kinds of risks people prepare for; where they live; what they eat; and the way they design, develop, and manage agro-ecological and urban systems”.


It is very important for Zimbabwe, the Southern Africa region, and Africa to act now, act together and act differently. The imperative of acting now is because of the tremendous inertia in both climate and socioeconomic systems: today’s actions will determine tomorrow’s options; .act together to keep costs down , to protect the most vulnerable and to ensure adequate food and water for all countries; and act differently to transform energy, food production and risk management systems. By acting now, acting together and acting differently, Zimbabwe and Africa will be able to transition to a low emission, climate resilient development path, as well as contribute to stabilizing concentration of greenhouse gases. 

Thursday, February 6, 2014

Teaching Earth Science to Kids

I spent a better part last evening discussing with my nine year old his homework. What struck me is that it was not the usual kiddy stuff. This was the kind of subject I grapple with day in day. The lad wanted to know the wetlands around our neighborhood, and how they could be useful for sustainability and food security. Wow, this is the kind of stuff you'd expect to hear from the AU, UNGA, and other high-level forums! But, yes it is being debated here and right now by the next generation. My guess is as good as yours; they are preparing to take responsibility into their own hands. That is the right thing to do, and we must support our schools and teachers to do the right thing all the way! 

Saturday, October 1, 2011

Of presidents probing past misdeads

Whenever a new administration takes office it is almost predictable that it would seek to probe its predecessors. The irony is that when they are voted out of power and it is time for them to bow out (if they are gracious enough that is) it comes as no surprise either that their complicity in corruption and other malfeasance is often not less but worse than the mess they claimed to be cleaning. This behavior has come to characterize many a regime that have come to power in this century thereby nipping in the bud the dream of a new Africa. Perhaps Africa at the beginning of the 21st Century is no much different than the one of the twentieth century after all it is business-as-usual if accounts of sleaze in high places is anything to go by. If this be the case the promise to end corruption or investigate past cases of corruption are empty and hollow. Corruption per se should not be an issue if we lack the will and capacity to deal with it. Ironically, it is if and when we marshal the fortitude to deal with this vanity that we will realize the dream of government of the people, for the people and by the the people.

Sunday, October 11, 2009

This is not time to point fingers

There is one last stop, Barcelona. The road to Copenhagen has been long and demanding. Negotiators under the two tracks—the Ad Hoc Working Group on Further Commitments for Annex I Parties under the Kyoto Protocol (AWG-KP) and the Ad Hoc Working Group on Long-Term Cooperative Action (AWG-LCA)—have put in long hours of hard work to get to this point. Although the remaining part of the journey is relatively short, it could turn out to be the most torturous if there is no significant shift in positions. One lesson I have learnt in life is that problems that appear intractable have some of the simplest of solutions.

To break the current “impasse”, I recommend developing (non-Annex I) countries commit to measurable, verifiable and reportable emission reduction targets in the post-Kyoto climate framework. In other words, the distinguishing criteria in the Copenhagen deal should be the level of emission reduction targets (ERTs) different countries are committed to and not whether a country has binding commitments or not. This might sound politically incorrect, but a closer scrutiny of what is at stake will reveal that it is the most feasible route to avoid the 2 degrees threshold (with some luck we can even limit it to 1.5 degrees). Countries cooperate because it is to their self best interest to do so. I have yet to meet anyone who says it is alright to go beyond the tipping point.

I am convinced that at the pace at which science is moving we are very likely to have clearer understanding of the role of primary aerosols and pollutant gases such as nitrogen oxide, carbon monoxide, ammonia, sulphates, and hundreds of organic gases and acids in atmospheric brown clouds (ABCs) in climate change sooner than later. This knowledge will be crucial to mathematically arrive at binding ERTs, primarily focusing on the “better half” greenhouse gases, which will help save the world as we know it. I believe Africa, which has hitherto pursued the greenest development path, must give effect to its historical experience by providing leadership in the climate talks.

Thursday, September 24, 2009

Kenya back in the woods?

Within one decade during which time Kenya experienced declining political risk after the successful 2002 elections, the country is back in the woods again, caught between heightened political risk—thanks to ethnic and social tensions with roots in inequality—and depressed economic growth outlook due to the effects of a changing climate and global economic recession. Unfortunately this is a very short time for the payoff to reforms to start bearing fruits and experience from countries as disparate as China, India and Vietnam suggests, such stability is needed for a minimum 10-15 years for positive long-run growth trends to take hold. With Obama’s administration having taken a very firm position on ending corruption and impunity in the continent, Kenya’s options are fairly limited.

Sunday, July 5, 2009

Greater Professional Collaboration Essential

Greater professional collaboration is critical if Africa is to solve some of the problems afflicting the continent. For example, Architects, Hydrologists and Water Engineers must collaborate to tap rain water in built up areas and inject it into aquifers to enhance groundwater recharge. Erratic rainfall and degradation of water resources and weak water resources are some of the reasons for the slow recharge rate of both surface and ground water resources. This has resulted in the low volumes in Ndakaini, Masinga and other dams with potentially devastating consequences for the economy. Yet, with judicious application of acquifer storage and recovery and related technologies, we can greatly improve our overall water security.