A5039092674- Image Processing and 3D Reconstruction
- Geological Modeling and Analysis
- Soil Geostatistics and Mapping
- 3D Modeling in Geospatial Applications
- Remote Sensing and LiDAR Applications
- Cryospheric studies and observations
- Geology and Paleoclimatology Research
- Winter Sports Injuries and Performance
- Landslides and related hazards
- 3D Surveying and Cultural Heritage
- Aeolian processes and effects
- High Altitude and Hypoxia
- Species Distribution and Climate Change
- Hybrid Renewable Energy Systems
- Cellular Automata and Applications
- Aerospace Engineering and Energy Systems
- Hydrology and Watershed Management Studies
- Modular Robots and Swarm Intelligence
- Hydrogen Storage and Materials
- Arctic and Antarctic ice dynamics
- Geochemistry and Geologic Mapping
- Adventure Sports and Sensation Seeking
- 3D Shape Modeling and Analysis
- Geographic Information Systems Studies
- Ecology and Vegetation Dynamics Studies
National Geographic Society
2019-2024
Princeton University
2011
Reservoir Labs (United States)
1985
Unlike satellite images, which are typically acquired and processed in near-real-time, global land cover products have historically been produced on an annual basis, often with substantial lag times between image processing dataset release. We developed a new automated approach for globally consistent, high resolution, near real-time (NRT) use (LULC) classification leveraging deep learning 10 m Sentinel-2 imagery. utilize highly scalable cloud-based system to apply this provide open,...
Habitat loss and fragmentation due to human activities is the leading cause of biodiversity ecosystem services. Protected areas are primary response this challenge cornerstone conservation efforts. Roughly 15% land currently protected although there momentum dramatically raise area targets towards 50%. But, how much remains in a natural state? We answer critical question by using open-access, frequently updated data sets on terrestrial impacts create new categorical map global influence...
Abstract Leading up to the Convention on Biological Diversity Conference of Parties 15, there is momentum around setting bold conservation targets. Yet, it remains unclear how much Earth's land area without significant human influence and where this located. We compare four recent global maps influences across land, Anthromes, Global Human Modification, Footprint Low Impact Areas, answer these questions. Despite using various methodologies data, different spatial assessments independently...
Abstract As the highest mountain on Earth, Mount Everest is an iconic peak that offers unrivalled natural platform for measuring ongoing climate change across full elevation range of Asia’s water towers. However, Everest’s extreme environment challenges data collection, particularly mountain’s upper slopes, where glaciers accumulate mass and mountaineers are most exposed. Weather stations have operated before, including world’s previous highest, but coverage has been sparse in space time....
The accurate quantification of current and past Himalayan glacier mass budgets is vital if we are to understand the evolution Asian water tower, which provides planet's most populous region. In this work, generated a geodetic time series spanning six decades over 79 glaciers surrounding Mt. Everest found consistent acceleration loss between 1960s (−0.23 ± 0.12 mwe a−1) modern era (−0.38 0.11 a−1 from 2009 2018). Glacier has varied depending on terminus type surface characteristics, thinning...
Abstract Global freshwater resources are vital to humanity and Earth’s ecosystems, yet about one third of the global population is affected by water scarcity for at least month per year. In these areas, overuse can lead threat depletion, marking them as ‘water hotspots’. This study combines outputs from a hydrological model (PCR-GLOBWB 2) with an extensive literature search provide comprehensive intercomparison key drivers, pressures, states, impacts responses (DPSIR) that shape gap between...
Abstract Mountain glacier systems are decreasing in volume worldwide yet relatively little is known about their upper reaches (>5000 m). Here we show, based on the world’s highest ice core and automatic weather stations, significant increasing role that melting sublimation have mass loss of even Mt. Everest’s (South Col Glacier, 8020 Estimated contemporary thinning rates approaching ~2 m a −1 water equivalent (w.e.) indicate several decades accumulation may be lost an annual basis now has...
Records from new high altitude weather stations reveal the meteorological conditions on Mt Everest during 2019 monsoon. Using data June–October, we show that temperature, humidity and winds announce arrival of monsoon, with changes amplify elevation. The largest change is therefore at summit, where estimate monthly mean air temperature increased by 5.5°C between June July to average −19.1°C over Such warming takes temperatures into realm winter much lower mountains mid-latitudes, illustrated...
This paper proposes elevation models to promote, evaluate, and compare various terrain representation techniques. Our goal is increase the reproducibility of rendering algorithms techniques across different scales landscapes. We introduce varying types, available user at no cost, with minimal common data imperfections such as missing values, resampling artifacts, seams. Three multiscale are available, each consisting a set grids, centered on same geographic location, increasing cell sizes...
In April and May 2019, as part of National Geographic Rolex's Perpetual Planet Everest Expedition, an interdisciplinary scientific effort conducted a suite research on the mountain recognized many changing dynamics, including emergent risks resulting from natural anthropogenic changes to biological system. this Primer, diverse teams highlight ecosystem human health, geologic hazards, climbing conditions that could affect local community, climbers, trekkers in future. We bring together...
This article examines mountain ski resort trail maps in North America 2008. It looks at the styles of used by resorts and main artists involved producing maps. The survey included from 428 with additional analysis 100 largest resorts. Point view creation method are primary factors determining style each map. Artists have employed three types views for mountains: panoramas, profiles, planimetric Panoramic far most common type map (86% all top areas). Profile 8% only 6%. Production methods...
This case study provides a framework for future monitoring and evidence human source pollution in the Khumbu region, Nepal. We analyzed chemical composition (major ions, major/trace elements, black carbon, stable water isotopes) of pre-monsoon stream (4300–5250 m) snow (5200–6665 samples collected from Mt. Everest, Lobuche, Imja Valley during 2019 season, addition to shallow ice core recovered Glacier (5300 m). In agreement with previous work, aerosol deposition is dominated by dust...
Species composition in high-alpine ecosystems is a useful indicator for monitoring climatic and environmental changes at the upper limits of habitable environments. We used DNA (eDNA) analysis to document breadth biodiversity present on Earth's highest mountain, Mt. Everest (8,849 m a.s.l.) Nepal's Khumbu region. In April-May 2019, we collected eDNA from ten ponds streams between 4,500 5,500 m. Using multiple sequencing bioinformatic approaches, identified taxa 36 phyla 187 potential orders...
The Everest region is characterized by its alpine glacial environment. In an effort to understand environmental change and tectonic activity, our team cored Taboche Lake, situated at 4,712 m along the western margin of Ngozumpa Glacier. This research catalogs past earthquakes using geological records lake core that are important for assessment future earthquake hazards in provides information risk floods. Core grain size characteristics internal sedimentary structures from computed...
For this special Cartographic Perspectives issue on mountain cartography, what better topic to cover than working with digital elevation data?I had originally planned both data sources and provide how-to techniques for data.I soon realized that even a brief review of ran many pages will need wait until future episode the Practical Cartographer's Corner.As most practicing cartographers know there is wealth available, much it free (Gamache, 2004, provides datasets useful evaluations their...
Ama Dablam (6812m) in the Khumbu (Everest) region as storm clouds build. (Photo credit: L.B. Perry/National Geographic.) In April and May 2019, National Geographic Rolex's Perpetual Planet Expedition to Mt Everest (hereafter 2019 Expedition) undertook most comprehensive science expedition (Mt Everest) included teams of scientists investigating a range topics, including glacier change, upward shifts ecosystems, black carbon deposition on surfaces snow/ice/water chemistry (Mayewski et al.,...
Abstract. The 12th ICA Mountain Cartography Workshop, organized by the International Cartographic Association (ICA)’s Commission on (CMC), was held April 11–15, 2023 in Colorado’s Rocky Mountains. Our workshops are usually biennially, alternating with Conferences (ICC). This year, however, workshop out of sequence due to COVID-19 pandemic. workshop, originally scheduled for 2020, first rescheduled 2022, and then again response shifting pandemic conditions. By 2023, pandemic-related travel...
In April and May 2019, as a part of the National Geographic Roxel Perpetual Planet Everest Expedition, most interdisciplinary scientific ever was launched. This research identified changing dynamics, including emergent risks resulting from natural anthropogenic change to system. We have compounded ecosystem human health, geologic hazards, climate conditions that impact local community, climbers, trekkeers in future. review brings together perspectives across biological, geological, health...
In April and May 2019, as a part of the National Geographic Roxel Perpetual Planet Everest Expedition, most interdisciplinary scientific ever was launched. This research identified changing dynamics, including emergent risks resulting from natural anthropogenic change to system. We have compounded ecosystem human health, geologic hazards, climate conditions that impact local community, climbers, trekkeers in future. review brings together perspectives across biological, geological, health...
Abstract. Standard Elevation ModelsWe propose the use of standard elevation models to evaluate and compare quality various relief shading other terrain rendering techniques. These datasets will cover landforms, be available at no cost user, free common data imperfections such as missing values, resampling artifacts, seams. Datasets multiple map scales over same geographic area for multi-scale analysis.