Results 1 to 10 of about 10,089 (118)

Improving the accuracy of extant gridded population maps using multisource map fusion

open access: yesGIScience & Remote Sensing, 2022
Population distribution is the most direct indicator used to describe human activities. Grid-based population distribution maps overcome the drawbacks of statistical data and are thus more suitable for integrated analysis with environmental data. However,
Peng Gao, Tianjun Wu, Yong Ge, Zihan Li
doaj   +2 more sources

Fusion of Multiple Gridded Biomass Datasets for Generating a Global Forest Aboveground Biomass Map

open access: yesRemote Sensing, 2020
Many advanced satellite estimation methods have been developed, but global forest aboveground biomass (AGB) products remain largely uncertain. In this study, we explored data fusion techniques to generate a global forest AGB map for the 2000s at 0.01 ...
Yuzhen Zhang, Shunlin Liang
doaj   +3 more sources

Evaluating the Accuracy of Gridded Population Estimates in Slums: A Case Study in Nigeria and Kenya

open access: yesUrban Science, 2021
Low- and middle-income country cities face unprecedented urbanization and growth in slums. Gridded population data (e.g., ~100 × 100 m) derived from demographic and spatial data are a promising source of population estimates, but face limitations in ...
Dana R. Thomson   +5 more
doaj   +1 more source

Improving intelligent dasymetric mapping population density estimates at 30 m resolution for the conterminous United States by excluding uninhabited areas [PDF]

open access: yesEarth System Science Data, 2022
Population change impacts almost every aspect of global change from land use, to greenhouse gas emissions, to biodiversity conservation, to the spread of disease.
J. Baynes, A. Neale, T. Hultgren
doaj   +1 more source

Global 1-km present and future hourly anthropogenic heat flux

open access: yesScientific Data, 2021
Measurement(s) anthropogenic heat emission • anthropogenic environmental process Technology Type(s) satellite imaging of a planet • computational modeling technique Factor Type(s) global population density map • global nighttime lights map • global ...
Alvin Christopher Galang Varquez   +3 more
doaj   +1 more source

Measuring modal accessibility gap using gridded population and network map platform data

open access: yesAin Shams Engineering Journal, 2023
Few studies have calculated the magnitude of the modal accessibility gap between public and private transportation (MAG) by taking into account both population characteristics and time-varying characteristics.
Long Zhao   +5 more
doaj   +1 more source

Datasets and approaches for the estimation of rainfall erosivity over Italy: A comprehensive comparison study and a new method

open access: yesJournal of Hydrology: Regional Studies, 2021
The paper considers a methodology to assess rainfall erosivity in Italy for the recent decades (1981–2010), building on datasets and materials freely available, such as those included within the Climate Data Store (CDS) of the Copernicus Climate Change ...
Roberta Padulano   +2 more
doaj   +1 more source

High-Precision Population Spatialization in Metropolises Based on Ensemble Learning: A Case Study of Beijing, China

open access: yesRemote Sensing, 2022
Accurate spatial population distribution information, especially for metropolises, is of significant value and is fundamental to many application areas such as public health, urban development planning and disaster assessment management. Random forest is
Wenxuan Bao   +5 more
doaj   +1 more source

Antarctic Bedmap data: Findable, Accessible, Interoperable, and Reusable (FAIR) sharing of 60 years of ice bed, surface, and thickness data [PDF]

open access: yesEarth System Science Data, 2023
One of the key components of this research has been the mapping of Antarctic bed topography and ice thickness parameters that are crucial for modelling ice flow and hence for predicting future ice loss and the ensuing sea level rise.
A. C. Frémand   +97 more
doaj   +1 more source

Assessing gridded observations for daily precipitation extremes in the Alps with a focus on northwest Italy [PDF]

open access: yesNatural Hazards and Earth System Sciences, 2013
In this study we compare three gridded observed datasets of daily precipitation (EOBS, MAP and NWIOI) over the Great Alpine Region (GAR) and a subregion in northwest Italy (NWI) in order to better understand the past variability of daily climate extremes
M. Turco   +4 more
doaj   +1 more source

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