Roberts, Mark

Person:
Roberts, Mark

Urban, Resilience and Land Global Practice, The World Bank

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Urban economics, Urban development, Spatial economics, Regional development

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Urban, Resilience and Land Global Practice, The World Bank

Last updated: January 13, 2025

Biography

Mark Roberts is a senior urban economist with the Urban, Resilience and Land Global Practice of the World Bank, where his work currently focuses on the East Asia and Pacific region. Prior to joining the World Bank, Mark was a lecturer in spatial economics at the University of Cambridge and a fellow in economics at Murray Edwards College, a member college of the University of Cambridge. Mark has published widely in leading peer-reviewed journals on the topic of spatial economic development and is a former coeditor of the journal Spatial Economic Analysis. He is coauthor of the World Bank’s South Asia Region Flagship Report, Leveraging Urbanization in South Asia, and its Latin America and Caribbean Flagship Report, Raising the Bar for Productive Cities in Latin America and the Caribbean. He has also worked on both the Europe and Central Asia and Sub-Saharan Africa regions, and acts as an advisor to Bank teams working on the analysis of processes of urban and spatial development. A native of the United Kingdom, Mark holds a PhD in land economy and an MA in economics from the University of Cambridge as well as an MS in economics from Warwick University.

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Publication Search Results

Now showing 1 - 10 of 26

Unlivable: What the Urban Heat Island Effect Means for East Asia’s Cities
(Washington, DC: World Bank, 2023-12-20) Roberts, Mark; Deuskar, Chandan; Jones, Nicholas; Park, Jane
Amid continuing urban growth and the accelerating effects of climate change, East Asian cities suffer from more extreme temperatures than surrounding rural areas - being up to 2 degrees Celsius hotter on average. This urban heat island (UHI) effect is caused by cities’ relative lack of vegetation, the prevalence of impervious surfaces, construction of buildings in locations that block breezes, releases of heat from cars and machinery, and other features of the urban environment. In the decades ahead, the UHI effect will interact with climate change in ways that make cities even more prone to heat waves - already increasing in frequency and intensity - especially among East Asian cities in tropical zones and in low- and middle-income countries. Extreme heat not only lowers the economic competitiveness and livability of cities in the region but also increases the risk of death and illness. Groups such as low-income residents, outdoor workers, and the region’s growing elderly population are the most vulnerable to extreme heat. The poor are also more likely to bear the brunt of these harms: certain urban neighborhoods, particularly poorer ones, may be several degrees hotter than others within the same city. This report uses satellite data, on-the-ground data collection, and a review of economic literature to shed new light on the magnitude of the UHI effect and its impacts on East Asian cities. Using a “Places, People, Institutions” framework, the report provides practical suggestions to help policy makers to rise to the extreme urban heat challenge. These actions, such as promoting urban greening, adopting heat-resilient urban design, and implementing heat wave early warning systems - can help to protect East Asia’s urban residents from the impacts of extreme heat, contributing to cities that are more competitive, livable, and inclusive.
An Anatomy of Urbanization in Sub-Saharan Africa
(World Bank, Washington, DC, 2023-11-29) Combes, Pierre-Philippe; Gorin, Clément; Nakamura, Shohei; Roberts, Mark; Stewart, Benjamin
This paper provides a detailed descriptive analysis of patterns of urbanization across Sub-Saharan Africa for the year circa 2015. Despite the rapidity and importance of Sub-Saharan Africa’s urbanization, little is known about the anatomy of patterns of urbanization across the region due to a lack of detailed and accurate official data on urban settlements and populations. To address this gap, the paper applies a modified version of the “dartboard” algorithm to high-resolution gridded population data for the region, which is derived from digitized maps of the footprints of all buildings in the region from very high-resolution satellite imagery. This allows for a consistent definition of urban areas across all countries in the region, overcoming the measurement problems that arise from relying on official definitions of urban areas, which vary markedly across countries. Using this definition, the paper presents evidence on key empirical regularities that are related to disparities across the urban hierarchies, such as the extent of urban primacy and Zipf’s law, as well as on the internal structures of cities, such as population density gradients and the number of centers that cities possess. The paper also analyzes how these characteristics are related to key country characteristics. Finally, the paper compares the results with those that arise from the use of an alternative definition of urban areas—the degree of urbanization.
Are Ride-Hailing Services and Public Transport Complements or Substitutes?: Evidence from the Opening of Jakarta’s MRT System
(World Bank, Washington, DC, 2023-12-20) Bosker, Maarten; Roberts, Mark; Tiwari, Sailesh; Wibisana, Putu Sanjiwacika; Wihardja, Maria Monica; Yanurzha, Ramda
Motorbike-based ride-hailing services are widespread in many of the most congested cities in the developing world. These services often predate the construction of modern public mass rapid transit systems. Ride-hailing services may complement such investments by providing important first and last mile connectivity. However, it has also been argued that they undermine the viability of mass rapid transit systems as people prefer to use ride-hailing services given their convenience and low prices. This paper applies an event study research design to proprietary, high-frequency data from one of Indonesia’s largest ride-hailing services, Gojek. The findings show that the opening of stations on Jakarta’s first mass rapid transit line led to large increases in ride-hailing activity in the immediate vicinities of the stations. This was accompanied by a significant decline in the average distance of ride-hailing trips to and from the station locations. These findings are consistent with ride-hailing services complementing public transport by providing first and last mile connectivity to the newly opened mass rapid transit system. Interestingly, this holds for both commuting and non-commuting trips and is strongest for mass rapid transit station locations that were not already served by Jakarta’s bus rapid transit system.
When the Lights Go Out: The Economic Impacts of Covid-19 on Cities Globally
(World Bank, Washington, DC, 2022-09) Khan, Amjad Muhammad; Park, Hogeun; Roberts, Mark; Wibisana, Putu Sanjiwacika
This paper uses high-frequency nighttime time lights data to estimate the impacts of the Covid-19 crisis on economic activity during the first year of the pandemic for a global sample of 2,800 cities, covering a total population of 2.5 billion people. Activity is found to be negatively affected by both the spread of the virus and the imposition of nonpharmaceutical interventions, but the negative impacts of the spread are large compared to those of nonpharmaceutical interventions. Large differences in city trajectories are also observed. Cities in low- and middle-income countries faced a significantly larger overall loss of economic activity compared to those in high-income countries. Additionally, cities with higher population densities are found to be more resilient in the face of the global shock as compared to less dense ones, but this difference is only observed in low- and middle-income countries. Taken together, the findings suggest that the Covid-19 crisis gave rise to divergence in urban economic trajectories, both across and within countries.
Estimating Urban Poverty Consistently Across Countries
(Washington, DC : World Bank, 2022-07-12) Combes, Pierre-Philippe; Nakamura, Shohei; Roberts, Mark; Stewart, Benjamin
Global poverty monitored by the World Bank for the Sustainable Development Goals (SDGs) is reported only at the national level, lacking a breakdown between urban and rural areas. A key challenge to producing globally comparable estimates of urban poverty is the need for consistent definitions of urban areas and poverty. This note illustrates an innovative approach to integrating globally consistent urban and poverty measurements to estimate urban poverty statistics that are directly comparable across countries. Two approaches to quantifying urban, the Degree of Urbanization and the Dartboard approaches are applied in seven case countries. By combining these delineations with official household budget survey data, poverty is estimated with international poverty lines. The empirical illustrations demonstrate that the proposed approach is potentially useful to improve the monitoring of global poverty.
Time to ACT: Realizing Indonesia's Urban Potential
(Washington, DC: World Bank, 2019-10-03) Roberts, Mark; Gil Sander, Frederico; Tiwari, Sailesh; Roberts, Mark; Gil Sander, Frederico; Tiwari, Sailesh
In over 70 years since its independence, Indonesia has been transformed by urbanization, and within the next quarter of a century, its transition to an urban society will be almost complete. While urbanization has produced considerable benefits for Indonesians, urbanization has the potential to deliver more prosperity, inclusiveness and livability. Time to ACT: Realizing Indonesia's Urban Potential explores the extent to which urbanization in Indonesia has delivered in terms of prosperity, inclusiveness, and livability, and the fundamental reforms that can help the country realize its urban potential. In doing so, the report introduces a new policy framework - the ACT framework - to guide policymaking. This framework emphasizes three policy principles - the need to Augment the provision and quality of infrastructure and basic services across urban and rural locations; the need to better Connect places and people with jobs and opportunities; and the need to Target lagging areas and marginalized groups through well-designed place-based policies, as well as thoughtful urban planning and design. Using this framework, the report provides policy recommendations differentiated by types of place, grounded in solid empirical evidence
Tracking Economic Activity in Response to the COVID-19 Crisis Using Nighttime Lights: The Case of Morocco
(World Bank, Washington, DC, 2021-02) Roberts, Mark
Over the past decade, nighttime lights have become a widely used proxy for measuring economic activity. This paper examines the potential for high frequency nighttime lights data to provide “near real-time” tracking of the economic impacts of the COVID-19 crisis in Morocco. At the national level, there exists a strong correlation between quarterly movements in Morocco’s overall nighttime light intensity and movements in its real GDP. This finding supports the use of lights data to track the economic impacts of the COVID-19 crisis at higher temporal frequencies and at the subnational level, for which GDP data are unavailable. Consistent with large economic impacts of the crisis, Morocco experienced a large drop in the overall intensity of its lights in March 2020, from which it has subsequently struggled to recover, following the country’s first COVID-19 case and the introduction of strict lockdown measures. At the subnational level, while all regions shared in March’s national decline in nighttime light intensity, Rabat – Salé – Kénitra, Tanger – Tetouan – Al Hoceima, and Fès – Meknès suffered much larger declines than others. Since then, the relative effects of the COVID-19 shock across regions have largely persisted. Overall, the results suggest that, at least for Morocco, changes in nighttime lights can help to detect the timing of changes in the direction of real GDP, but caution is needed in using lights data to derive precise quantitative estimates of changes in real GDP.
Female Business Leaders, Business and Cultural Environment, and Productivity around the World
(World Bank, Washington, DC, 2020-06) Fang, Sheng; Goh, Chorching; Roberts, Mark; Xu, L. Colin; Zeufack, Albert
Studies of female business leaders and economic performance are rarely conducted with worldwide observational data, and with considerations on the underlying cultural, institutional, and business environment. This paper uses worldwide, firm-level data from more than 100 countries to study how female-headed firms differ from male-headed firms in productivity level and growth, and whether the female leader performance disparity hinges on the underlying environment. Female-headed firms account for about 11 percent of firms and are more prevalent in countries with better rule of law, gender equality, and stronger individualistic culture. On average, female-headed firms have 9 to 16 percent lower productivity and 1.6 percentage points lower labor productivity growth, compared with male-headed firms. The disadvantage is mainly in manufacturing firms, largely nonexistent in service firms, and present in relatively small firms. Although the female leader performance disadvantage is surprisingly not related to gender equality, it is smaller where there is less emphasis on personal networks (better rule of law, lower trade credit linkages, lower usage of bank credit, and more equalizing internet), less competition, and the culture is more collective. The study does not find that the female leader disadvantage is amplified in corrupt environments. Africa differs significantly in that it features lower female disadvantage, stronger female advantage in services relative to manufacturing, and stronger sensitivity of female business leaders to electricity provision and bank credit access.
Leveraging Urbanization in South Asia: Managing Spatial Transformation for Prosperity and Livability
(Washington, DC: World Bank, 2016) Ellis, Peter; Roberts, Mark
The number of people in South Asia's cities rose by 130 million between 2000 and 2011--more than the entire population of Japan. This was linked to an improvement in productivity and a reduction in the incidence of extreme poverty. But the region's cities have struggled to cope with the pressure of population growth on land, housing, infrastructure, basic services, and the environment. As a result, urbanization in South Asia remains underleveraged in its ability to deliver widespread improvements in both prosperity and livability. Leveraging Urbanization in South Asia is about the state of South Asia's urbanization and the market and policy failures that have taken the region’s urban areas to where they are today--and the hard policy actions needed if the region’s cities are to leverage urbanization better. This publication provides original empirical and diagnostic analysis of urbanization and related economic trends in the region. It also discusses in detail the key policy areas, the most fundamental being urban governance and finance, where actions must be taken to make cities more prosperous and livable.
Definition Matters: Metropolitan Areas and Agglomeration Economies in a Large Developing Country
(World Bank, Washington, DC, 2019-09) Bosker, Maarten; Park, Jane; Roberts, Mark
A variety of approaches to delineate metropolitan areas have been developed. Systematic comparisons of these approaches in terms of the urban landscape that they generate are however few. Our paper aims to fill this gap. We focus on Indonesia and make use of the availability of data on commuting flows, remotely-sensed nighttime lights, and spatially fine-grained population, to construct metropolitan areas using the different approaches that have been developed in the literature. We find that the maps and characteristics of Indonesia’s urban landscape vary substantially depending on the approach used. Moreover, combining information on the metro areas generated by the different approaches with detailed micro-data from Indonesia’s national labor force survey, we show that the estimated size of the agglomeration wage premium depends nontrivially on the approach used to define metropolitan areas.