Ethiopia’s 2015-2016 drought

West Africa was gripped by the unrelenting hand of famine. Its arid breath whispered over the land, blighting the crops and blistering the livestock. Its shadow fell across the villages, stretching even further in the remorseless sunlight. The water holes shrivelled and dried up. The mud hardened, then cracked. Wherever the people went, black flies followed, sucking the last drops of moisture from the corners of their eyes and mouths. It famine was the king, the flies were its most loyal knights. It was a cruel time. Every minute of every day became an exhausting struggle to find food, to break into the unyielding earth for water, to save the pathetically withered things that have been root vegetables or plants. The people struggled and prayed for rain. They knew they would survive. They had been through it all before.”

Extract from ‘Death and the Boy’, MYTHS & LEGENDS, Anthony Horowitz

Doyte lives in South Omo, Ethiopia, one of the most remote areas in the world and one of the hardest hit by climate change. He doesn’t know about climate change. As Lord of the Rain, it’s his job to summon the rains and for five years, they haven’t come. Ethiopia’s economy is booming. Fuelled by green power and climate-resilient policies, it’s among the fastest growing and greenest economies in the world. But neither the government, nor Doyte, can reverse the catastrophic change devastating their environment

ARTICLE 1 – World weather attribution
Source: https://www.worldweatherattribution.org/ethiopia-drought-2015/

The worst drought in decades gripped north and central Ethiopia in 2015, affecting nearly 10 million people. The resulting food scarcity meant more than eight million people in the parched country needed emergency food aid, according to the United Nations.

The dry conditions left hundreds of thousands of farmers with failed crops and weakened or dead livestock. The magnitude of the devastation to Ethiopia led the UN’s Allahoury Diallo to declare that the “drought is not just a food crisis – it is, above all, a livelihood crisis.”

Key findings

  • The areas of north and central Ethiopia suffered their worst drought in decades in 2015, a year marked by a strong El Niño.
  • The drought affected nearly 10 million Ethiopians.
  • Scientists with World Weather Attribution used multiple methods of attribution science to look at the possible roles climate change and El Niño played in the drought.
  • They found that El Niño made this rare drought even drier in the Kiremt season.
  • No influence of climate change could be found, with the spread of possible trends ranging from drought being 40 percent less to four times more probable.

Event

Signs of trouble began to surface early in the year. Farmers waited for the Belg rains that generally occur between February and May in the central and eastern parts of the country (Figure 1). About 10 percent of the Ethiopian population depends completely on this season to provide rainfall for crops and pastures. But in 2015, after a false start the Belg rains came a month late in northern and central Ethiopia.

What also arrived was a particularly strong El Niño, associated with the warming of equatorial waters in the Pacific Ocean. The effects of El Niño play out in different ways across the planet. In Ethiopia, El Niño can lead to drier conditions, mainly in the north-western part of the country, affecting the rainy season known as Kiremt that occurs from June through September. In a normal year, the Kiremt rains account for 50 – 80 percent of annual rainfall. But in 2015, the Kiremt season was delayed and the rains were erratic and below average. From February through August  2015 the northern central and some eastern parts of the country received only 500 mm of rainfall, a deficit of 167 mm from the long-term average (CHIRPS). Only one-half to three-quarters of the rainfall expected was received from February through September (Singh et al. 2016).

In a world warmed by human-induced climate change, droughts are expected to become more common and more severe in some parts of the world. Is this region one of these?

Analysis

Given the extreme nature of the 2015 drought in Ethiopia, we conducted an analysis to see if climate change played a role in this drought. The influence of El Niño was also analysed.

Researchers looked at the dry central to northern region of the country (Figure 1), basing the boundaries on the homogeneity of climatological rainfall and topography. They studied the more reliable data from 1960 – 2015, focusing on the months of February through September during which almost all rain falls.

To assess the extent to which the Ethiopian drought of 2015 was linked to human-induced climate conditions, the WWA team conducted independent assessments with three peer-reviewed approaches that use: (1) statistical analyses of historical observational datasets (2) data from global climate models, and (3) a large ensemble of simulations of possible weather scenarios with a global climate model. Analyzing the event using numerous methods provides a means to assess confidence in the results.

The set of global climate models contributing to this analysis are EC-Earth, weather@home and CMIP5. The coupled general circulation model EC-Earth’s analysis was run on 16 experiments 1861-2100 using CMIP5 protocol. Weather@home, an atmosphere-only general circulation model, provided weather simulations under observed climate conditions (sea-surface temperatures and sea-ice conditions) as well as simulations without human-induced climate change. CMIP5 is the multi-model ensemble prepared for the IPCC Fifth assessment report.

Two key outputs from these analyses are determining the return period of the February-September precipitation amount, and examining how the likelihood of the event has changed due to global warming. For the observational data and EC-Earth model, this is explored by fitting the precipitation data to a Gaussian distribution and allowing the Gaussian fit parameters to be a function of the low-pass filtered (smoothed) global mean surface temperature (GMST), scaling the probability distribution function (PDF) up or down with GMST to represent the climate of 1960 and 2015. For the weather@home and CMIP5 models, the return times are directly estimated in the current climate and in a counter-factual climate without human influence. The ratio of the resulting frequency of occurrence of such a drought event today compared to the past, before there was a strong human influence on the climate system, measures the extent to which climate change affected the likelihood of the event.

Figure 1: Map showing area of analysis, north-eastern Ethiopia, 8°-13°N, 38° – 43°E. Anomaly in precipitation (CHIRPS, over 1981-2010 climatology) averaged over February — September 2015. Source: CHIRPS, available from the Climate Explorer (climexp.knmi.nl)

Figure 2: Map showing the areas which receive rain during the Belg season [Panel A] and the Kiremt season [Panel B]. Source: EHCT

Figure 3: Time series of daily rainfall for the year 2015 in northern and central Ethiopia, 8°-13°N, 38° – 43°E. Anomaly in precipitation (CHIRPS), compared to the 1981-2010 climatology (red: drier, blue: wetter). Source: CHIRPS, available from the Climate Explorer (climexp.knmi.nl)

Results

The observed 2015 drought was an extremely rare event that is expected to happen in the central to north-eastern parts of Ethiopia only around once every few hundred years (best estimate 260 years, lowest estimate of 60 years, according to the 95% confidence interval, based on the gridded CenTrends data set extended with CHIRPS, mainly satellite data in 2015) in the current climate. The longest return periods are in the southwestern region of the study area. The return period at the station Addis Ababa however was found to be only three years (two to five years, according to the 95% confidence interval). This disparity with the gridded CenTrends dataset is due to a few possible reasons, including scarcity of station data, differing characteristics of point data versus area averaged data and small scale variability within the study area. Using the regression between El Niño (NINO3.4 index) and the precipitation series to subtract the influence of El Niño from the observational data suggests that the 2015 drought was exceptional and enhanced by El Niño. Without El Niño, the event would likely have been wetter, with results indicating a return period of 80 years (lowest estimate of 20 years, according to the 95% confidence interval) instead of the actual 260 years (lowest estimate of 60 years, according to the 95% confidence interval).

The story is more complex when it comes to the role of human-induced climate change in the 2015 extreme drought. Overall, the climate models used indicate a wide spread of results regarding the possible influence of climate change.

  • The EC-Earth model analysis indicates a non-significant drying trend, with a risk ratio between now and 1960 of 1.4 (0.9-1.9 according to the 95% confidence interval).
  • The weather@home simulations paint different pictures for the Belg and Kiremt rainy seasons.
  • The Belg season shows no significant change in likelihood of such drought events due to human-caused climate change nor SSTs.

During the Kiremt season, and concomitantly also for the joint season, simulations indicate that human-induced climate change did increase the frequency of such an event. For example, a once in 100 year joint-season event in the world today is simulated as a once in over 230 year event in a world without human-induced climate change. Analysis of the CMIP5 ensemble indicated a return period of the drought of about 30 years, with no difference in frequency from pre-industrial times. Overall, the trends in droughts in the models between the current and pre-industrial climate range from being a factor of 1.7 less likely to a drying trend of four times more likely. Whilst these model results are statistically compatible with gridded observations (due to the large spread of possible trends from gridded observations ranging from a factor five decrease to a factor 10 increase in likelihood), they are not compatible with each other, which implies that the differences are not only due to natural variability but also due to model spread, which has been taken into account in the final uncertainty range. As this range encompasses no change, the drought cannot be attributed to climate change.

Exposure & vulnerability

In December 2016 the Government of Ethiopia and the United Nations (UN) jointly released a Humanitarian Response Document (HRD) calling for emergency assistance for 10.2 million people, in addition to the 7.9 million people under routine support from the  national social safety net program, Productive Safety Net Programme (PSNP) (AKLDP, 2016). Beyond total precipitation deficits, both the timing and the spatial distribution of rainfall impacted livelihood activities, such as agriculture and pastoralism (Singh et al., 2016).  In 2016, many parts of the central and northern Ethiopia were reported to be in IPC Phase 3 of food insecurity – the ‘acute crisis’ phase (FEWS, 2017).  In the most affected areas, over 75 percent of crop production was reported lost, one million livestock were reported to have died, 1.7 million people are estimated to experience Moderate to Acute Malnutrition (MAM) and 435,000 people are estimated to experience severe acute malnutrition (SAM) (HRD, 2016). The Government of Ethiopia and the international humanitarian community mobilized to meet emergency needs, including provisions of water, sanitation and hygiene, food and nutrition.

Ethiopia is one of the fastest-growing economies in Africa, with an average economic growth rate of  10.8 percent per annum between 2003 and 2015 (World Bank 2016). In parallel, over a similar period, the number of Ethiopians living in extreme poverty dropped by 22 percentage points, reducing from  55.3 percent in 2000 to 33.5 percent in 2011.  The Ethiopian government is currently implementing the second phase of its Growth and Transformation Plan in an effort to further advance these strong trends (World Bank 2016).  In addition, in collaboration with longstanding development partners, the Ethiopian government has also implemented the PSNP since 2005.  The PSNP uses food and cash transfers to help households overcome food deficits in order to improve overall food security. As of 2017, the program has entered its fourth phase and serves 7.997 million food insecure people each year (PSNP n.d.).  During the 2015/2016 drought the PSNP program continued to provide cash transfers to clients and extended cash transfers into the Somali region. While food transfers were delayed, cash transfers was increased to fill the gap. In addition the PSNP suspended infrastructure requirements in some areas due to the drought conditions.

Despite its impacts, with the current drought estimated to be most likely a one in several hundred year event, a rarity that would place significant strains on most public services, the lower impact of this drought compared to those in 1984 and 1973 is a testament to the advances being made in improving the resilience of Ethiopians to climate shock and stresses.

Scientific parameters

Variable Precipitation
Event definition Feb-Sept 2015, which combines the Belg (Feb-May) and Kiremt (June-Sept) rainy seasons
Domain Central to northeastern Ethiopia, 8°-13°N, 38°–43°E
Observational data Two gridded precipitation datasets: CenTrends, 1960-2014, CHIRPS, 2015; Station data (Addis Ababa, Alem Ketema, Combolcha)
Models used EC-Earth 2.3 model, at T159, about 125-km resolution; weather@home (50km resolution); CMIP5 multi-model ensemble; HadGEM3A (considered but not used)

Results

El Niño enhanced the drought, making a rare event (1 in 80 years) even more rare (1 in several hundred years), according to correlations in the observations. The models and observations do not show conclusive results on the influence of climate change.

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ARTICLE 2 – International Food Policy Research Institute,
14 December 2015, Paul Dorosh and Shahidur Rashid
Source: http://www.ifpri.org/blog/ethiopias-2015-drought-no-reason-famine

Ethiopia is currently experiencing its worst drought in over 30 years. Net cereal production from the main (2015/16 meher season) harvest currently underway may fall by 10-20 percent (1.9 to 3.7 million tons) relative to the 2014/15 harvest (December 2015 preliminary estimates based on woreda-level yield data). Households in regions hit particularly hard, including the eastern highlands and pastoralist areas, are expected to suffer especially severe crop and livestock losses. According to UN estimates, about 10.1 million people, approximately 10 percent of Ethiopia’s population, are in need of food assistance (See also National Disaster Risk Management Coordination Commission and the Ethiopia Humanitarian Country Team. 2015. “Ethiopia: Humanitarian Overview 2016”).

This food security crisis represents a sharp break from the mostly positive trends in agricultural development and food security over the past two decades. From the mid-1990s through 2010, the Ethiopian government under the late President Meles Zenawi followed an Agricultural Development-Led Industrialization (ADLI) strategy, investing heavily in agricultural production and rural infrastructure (especially roads). This focus on agriculture and rural investments paid off handsomely. According to official production estimates, cereal production nearly quadrupled between 1994/95 and 2009/10 from 6.15 to 15.53 million tons (a 50 percent increase in per capita production), and reached 23.61 million in 2014/15 (see Figure 1 below). (Although, there remains a debate on the magnitude of the production increases, recent analysis suggests that sharp increases in fertilizer use, improved seeds and agricultural extension can account for much of the increase in production from 2004 to 2014.) This year’s drought has led to major crop losses in some regions, however, even while most of the western part of the country has had adequate rainfall and relatively normal harvests.

Marked differences in rainfall and production shortages across regions also characterized the 1984 drought that resulted in a major famine in Ethiopia. Per capita production of cereals fell sharply from 154.1 kgs/capita in 1982/83 to 122.6 in 1984/85 and 91.2 in 1985/86. (Read more). The situation was made far worse, however, by military conflict (ongoing civil wars) and market restrictions (regulation and bans on inter-regional movement of grain and labor) that prevented grain from flowing freely from relative surplus to deficit areas and poor market infrastructure. Other government policies, including medium-term policies of concentrating government investment on state farms and producer cooperatives, instead of independent small farmers, also contributed to low levels of production and vulnerability to famine.

Overall food security in Ethiopia has improved substantially and the risk of famine has been sharply reduced since the mid-1980s, however. Public investments in agricultural technology (improved seed, fertilizer and extension) have directly raised cereal output. Expansion of road networks has connected farmers to markets, as well as improved connections between cities and regions by reducing travel time. Rapid overall economic growth has raised household incomes, increased foreign exchange earnings and enhanced government revenues. Improvements in telecommunications, better information flows and a functioning early warning system help to shorten response time for emergency relief. And of crucial importance, the Government of Ethiopia created the Productive Safety Net Programme (PSNP) in 2005 that combines food and cash transfers to Ethiopia’s poorest and most food insecure households with a work requirement for able-bodied recipients. The PSNP reached about 7.8 million individuals in 2013, distributing in total about 200 thousand tons of cereals, accounting for about one-third of the total value of transfers.

These past experiences and the current economic and institutional context suggest five major policy actions available to the government to avert a famine, or even large-scale household food shortages.

  • Avoid restrictions on private market trade flows within Ethiopia thereby helping to ensure adequate food supplies in drought-affected areas by enabling grain to flow freely from surplus to deficit areas.
  • Utilise the international market to supplement domestic supplies. Food aid inflows and government commercial imports are important, not only for adding to total domestic supply, but also as a source of grain for the PSNP. Since domestic wholesale wheat prices in Addis Ababa are currently higher than import parity prices (the world price of wheat adjusted for transport and marketing costs to Addis Ababa), encouraging private sector imports can also add rapidly to domestic supplies at no cost to the government. This price stabilization strategy was successfully implemented by Bangladesh following major production shortfalls (Read more).
  • Expand the coverage and ration sizes of the PSNP in areas hit hardest by the drought. Utilize other emergency relief channels for severely affected households that cannot readily be included in the PSNP in the short run.
  • Monitor market and household food security conditions, and encourage information flows through the press, internet and other channels so as to enable government and donor relief efforts to reach all households in need.
  • In the medium term, continue to support economically efficient domestic food production through investments in agricultural research and development, extension, rural roads and market centers.

The 2015-16 drought and production shortfall need not cause a famine in Ethiopia. By heeding the lessons of past famines, the government and the international donor community can help ensure that there is sufficient availability of cereals to supply Ethiopia’s food needs and sufficient transfers in cash and in kind to provide needy households with adequate access to food. Other food security issues will still need to be resolved, including ensuring adequat te nutrition for all individuals. However, there is ample reason for hope that this drought will be remembered, not for a deadly famine, but wise policies and timely interventions built on Ethiopia’s progress of the past 25 years.


ARTICLE 3 – Food and Agriculture Organisation of the United Nations
– Escalation of food insecurity and malnutrition in Ethiopia
http://www.fao.org/emergencies/resources/videos/video-detail/en/c/386247/

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