Sérgio Freire

4.3k total citations · 1 hit paper
90 papers, 2.7k citations indexed

About

Sérgio Freire is a scholar working on Global and Planetary Change, Transportation and Atmospheric Science. According to data from OpenAlex, Sérgio Freire has authored 90 papers receiving a total of 2.7k indexed citations (citations by other indexed papers that have themselves been cited), including 45 papers in Global and Planetary Change, 28 papers in Transportation and 11 papers in Atmospheric Science. Recurrent topics in Sérgio Freire's work include Impact of Light on Environment and Health (28 papers), Land Use and Ecosystem Services (23 papers) and Human Mobility and Location-Based Analysis (22 papers). Sérgio Freire is often cited by papers focused on Impact of Light on Environment and Health (28 papers), Land Use and Ecosystem Services (23 papers) and Human Mobility and Location-Based Analysis (22 papers). Sérgio Freire collaborates with scholars based in Italy, Portugal and Austria. Sérgio Freire's co-authors include Martino Pesaresi, Marcello Schiavina, Thomas Kemper, Aneta J. Florczyk, Michele Melchiorri, Christoph Aubrecht, Daniele Ehrlich, Kytt MacManus, Pesaresi Martino and Teresa Santos and has published in prestigious journals such as Nature Communications, SHILAP Revista de lepidopterología and Scientific Reports.

In The Last Decade

Sérgio Freire

84 papers receiving 2.6k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

The spatial allocation of population: a review of large-scale gridded population data products and their fitness for use

2019 245 citations Stefan Leyk, Andrea E. Gaughan et al. Earth system science data profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Sérgio Freire Italy	31	1.6k	725	410	355	342	90	2.7k
Budhendra Bhaduri United States	25	1.6k 1.0×	724 1.0×	705 1.7×	205 0.6×	224 0.7×	99	3.3k
Yunyan Du China	24	896 0.5×	787 1.1×	377 0.9×	217 0.6×	206 0.6×	102	2.8k
Qingyun Du China	30	1.1k 0.7×	818 1.1×	500 1.2×	177 0.5×	347 1.0×	138	3.3k
Richard Sliuzas Netherlands	35	2.0k 1.2×	498 0.7×	396 1.0×	579 1.6×	534 1.6×	124	3.8k
Ting Ma China	30	2.0k 1.2×	1.1k 1.5×	810 2.0×	264 0.7×	335 1.0×	94	4.1k
Jamal Jokar Arsanjani Denmark	32	2.1k 1.3×	551 0.8×	621 1.5×	193 0.5×	540 1.6×	85	3.3k
Alessandro Sorichetta United Kingdom	28	1.3k 0.8×	758 1.0×	473 1.2×	264 0.7×	226 0.7×	72	2.6k
Thomas Kemper Italy	28	1.6k 1.0×	430 0.6×	733 1.8×	204 0.6×	520 1.5×	69	3.0k
Carlo Lavalle Italy	28	2.2k 1.3×	426 0.6×	433 1.1×	302 0.9×	335 1.0×	132	3.7k
Aneta J. Florczyk Italy	20	1.1k 0.6×	320 0.4×	305 0.7×	145 0.4×	312 0.9×	43	1.7k

Countries citing papers authored by Sérgio Freire

Since Specialization

Citations

This map shows the geographic impact of Sérgio Freire's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Sérgio Freire with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Sérgio Freire more than expected).

Fields of papers citing papers by Sérgio Freire

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Sérgio Freire. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Sérgio Freire. The network helps show where Sérgio Freire may publish in the future.

Co-authorship network of co-authors of Sérgio Freire

This figure shows the co-authorship network connecting the top 25 collaborators of Sérgio Freire. A scholar is included among the top collaborators of Sérgio Freire based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Sérgio Freire. Sérgio Freire is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Melchiorri, Michele, Sérgio Freire, Marcello Schiavina, et al.. (2024). The Multi-temporal and Multi-dimensional Global Urban Centre Database to Delineate and Analyse World Cities. Scientific Data. 11(1). 82–82. 11 indexed citations

Pesaresi, Martino, Marcello Schiavina, Panagiotis Politis, et al.. (2024). Advances on the Global Human Settlement Layer by joint assessment of Earth Observation and population survey data. International Journal of Digital Earth. 17(1). 44 indexed citations

Florio, Pietro, Sérgio Freire, & Michele Melchiorri. (2023). Estimating geographic access to healthcare facilities in Sub-Saharan Africa by Degree of Urbanisation. Applied Geography. 160. 103118–103118. 17 indexed citations

Schiavina, Marcello, Michele Melchiorri, Sérgio Freire, et al.. (2022). Land use efficiency of functional urban areas: Global pattern and evolution of development trajectories. Habitat International. 123. 102543–102543. 75 indexed citations

Schiavina, Marcello, Michele Melchiorri, Christina Corbane, Sérgio Freire, & Filipe Batista e Silva. (2022). Built-up areas are expanding faster than population growth: regional patterns and trajectories in Europe. Journal of Land Use Science. 17(1). 591–608. 29 indexed citations

Schiavina, Marcello, Sérgio Freire, & Kytt MacManus. (2019). GHS population grid multitemporal (1975-1990-2000-2015), R2019A. 88 indexed citations

Freire, Sérgio, Aneta J. Florczyk, Martino Pesaresi, & Richard Sliuzas. (2019). An Improved Global Analysis of Population Distribution in Proximity to Active Volcanoes, 1975–2015. ISPRS International Journal of Geo-Information. 8(8). 341–341. 53 indexed citations

Leyk, Stefan, Andrea E. Gaughan, Susana B. Adamo, et al.. (2019). Allocating people to pixels: A review of large-scale gridded population data products and their fitness for use. Joint Research Centre (European Commission). 12 indexed citations

Schiavina, Marcello, Michele Melchiorri, Christina Corbane, et al.. (2019). Multi-Scale Estimation of Land Use Efficiency (SDG 11.3.1) across 25 Years Using Global Open and Free Data. Sustainability. 11(20). 5674–5674. 78 indexed citations

10.

Leyk, Stefan, Andrea E. Gaughan, Susana B. Adamo, et al.. (2019). The spatial allocation of population: a review of large-scale gridded population data products and their fitness for use. Earth system science data. 11(3). 1385–1409. 245 indexed citations breakdown →

11.

Florczyk, Aneta J., Michele Melchiorri, Julian Zeidler, et al.. (2019). The Generalised Settlement Area: mapping the Earth surface in the vicinity of built-up areas. International Journal of Digital Earth. 13(1). 45–60. 20 indexed citations

12.

Freire, Sérgio, Marcello Schiavina, Aneta J. Florczyk, et al.. (2018). Enhanced data and methods for improving open and free global population grids: putting ‘leaving no one behind’ into practice. International Journal of Digital Earth. 13(1). 61–77. 51 indexed citations

13.

Corbane, Christina, Martino Pesaresi, Panagiotis Politis, et al.. (2018). The grey-green divide: multi-temporal analysis of greenness across 10,000 urban centres derived from the Global Human Settlement Layer (GHSL). International Journal of Digital Earth. 13(1). 101–118. 54 indexed citations

14.

Rosina, Konštantín, et al.. (2018). Increasing the detail of European land use/cover data by combining heterogeneous data sets. International Journal of Digital Earth. 13(5). 602–626. 43 indexed citations

15.

Ehrlich, Daniele, Michele Melchiorri, Aneta J. Florczyk, et al.. (2018). Remote Sensing Derived Built-Up Area and Population Density to Quantify Global Exposure to Five Natural Hazards over Time. Remote Sensing. 10(9). 1378–1378. 43 indexed citations

16.

Melchiorri, Michele, Aneta J. Florczyk, Sérgio Freire, et al.. (2018). Unveiling 25 Years of Planetary Urbanization with Remote Sensing: Perspectives from the Global Human Settlement Layer. Remote Sensing. 10(5). 768–768. 132 indexed citations

17.

Pesaresi, Martino & Sérgio Freire. (2016). GHS-SMOD R2016A - GHS settlement grid, following the REGIO model 2014 in application to GHSL Landsat and CIESIN GPW v4-multitemporal (1975-1990-2000-2015) - OBSOLETE RELEASE. Open MIND. 2 indexed citations

18.

Pesaresi, Martino, Daniele Ehrlich, Aneta J. Florczyk, et al.. (2015). GHS-BUILT R2015B - GHS built-up grid, derived from Landsat, multitemporal (1975, 1990, 2000, 2014) - OBSOLETE RELEASE. Open MIND. 2 indexed citations

19.

Navarro, Ana, Teresa Santos, Sérgio Freire, et al.. (2010). Cartographic data extraction from airborne imagery by hierarchical-based morphologic image processing. Portuguese National Funding Agency for Science, Research and Technology (RCAAP Project by FCT). 1 indexed citations

20.

Santos, Teresa, Sérgio Freire, A. M. Fonseca, & José António Tenedório. (2010). Producing a building change map for urban management purposes. Portuguese National Funding Agency for Science, Research and Technology (RCAAP Project by FCT). 1 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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