INAIGEM

Permanent URI for this communityhttps://hdl.handle.net/20.500.14982/4

Browse

Settings

Author: search.filters.author.Alvarado Lugo, Robert A.

Search Results

Now showing 1 - 4 of 4
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Datalogger for Low-Cost High Mountain Weather Stations: Design, Optimization and Testing of Power Consumption and Compatibility with Satellite Transmitter
    (Institute of Electrical and Electronics Engineers Inc., 2023)
    Alvarado Lugo, Robert A.
    ;
    Lovon Ramos, Percy W.
    ;
    Lujan Leon, Jean
    This paper presents the design, optimization, andlaboratory testing of a low-cost Datalogger for meteorologicalstations in high mountain environments. The lack of meteorolog-ical data in the high Andean basins hinders natural resourcemanagement and disaster prevention, so Low-Cost WeatherStations are presented as efficient solutions to collect such dataand meet the demand for research in these areas. The Dataloggerwas developed to capture, store, and transmit meteorologicaldata, while also addressing the challenges of operating in remoteand harsh conditions. The study focused on integrating essentialfunctionalities, such as data transmission, with a strong emphasison satellite communication for global coverage. The optimizationprocess involved state-of-the-art review, careful selection andplacement of components, PCB design, impedance control, andenergy consumption considerations. Two versions of the Datalog-ger were fabricated and subjected to laboratory testing to assesstheir performance and reliability. The results showed that bothversions exhibited satisfactory responses in terms of data acquisi-tion, communication interfaces, and sensor integration. Overall,the Datalogger demonstrated promising results, showcasing itspotential for scientific research and environmental monitoringin challenging high mountain environments. Future work willinvolve field testing to validate its performance under real-worldconditions and further refine the design for optimal functionality
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Low power datalogger for hydrometeorological variables in high mountain based on ESP32, LDO with low quiescent current and P-channel MOSFET
    (Institute of Electrical and Electronics Engineers Inc., 2024)
    Alvarado Lugo, Robert A.
    ;
    Cardenas Campana, Jessenia
    ;
    Coaguila Agurto, Susan
    ;
    Lujan Leon, Jean
    ;
    Torres Obando, Luis
    The monitoring of hydrometeorological variables inhigh mountain regions is crucial for understanding the impactsof climate change and managing water resources. This studypresents the development of a low power datalogger designed forlong-term deployment in remote, high-altitude environments. Thedatalogger integrates a ESP32, a low dropout regulator (LDO)with low quiescent current and a P-channel MOSFET to optimizeenergy consumption, achieving an autonomy of approximately 15months with a 18650 battery (1800 mAh). The device supportsvarious communication protocols to measure key hydrometeo-rological parameters such as wind speed and direction, solarradiation, surface temperature, and atmospheric pressure andhumidity. Field tests demonstrated consistent performance, witha power consumption of 14 µA in deep sleep mode. This designensures reliable data collection with minimal maintenance, mak-ing it a valuable tool for environmental monitoring in challenginghigh mountain conditions.
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Performance Comparison of AWS IoT Connected Dataloggers in Glacier Environments: Campbell CR1000X vs. ESP32 Open Source
    (Institute of Electrical and Electronics Engineers Inc., 2024)
    Alvarado Lugo, Robert A.
    ;
    Cardenas Campana, Jessenia
    ;
    Coaguila Agurto, Susan
    ;
    Lovon Ramos, Percy W.
    ;
    Lujan Leon, Jean
    Monitoring hydrometeorological conditions in highmountain areas is crucial for understanding and mitigating theimpacts of climate change. This study addresses the developmentand implementation of both commercial and open-source data-loggers for weather monitoring in these environments. Througha review of the hardware and software used, we present thetools employed in the development of the study, along with thenetwork infrastructure that connects the city of Huaraz withLake Palcacocha, enabling internet access, as well as the IoTnetwork design for each datalogger. The commercial dataloggerwas configured according to the manufacturer’s guidelines, es-tablishing secure MQTT communication with AWS IoT Core.On the other hand, the open-source datalogger required thedevelopment of custom scripts in the Arduino IDE, incorporatingWiFi and MQTT libraries, and overcoming challenges relatedto network reconnection and data integrity. Field experimentsdemonstrated high data transmission efficiency (commercial:99.68%, open-source: 99.69%). Although the open-source data-logger required code tuning to achieve performance comparableto the commercial version, it proved viable as an open-sourcesolution for high-altitude monitoring. Compatibility with AWSIoT Core enabled real-time data visualization, storage, andenhanced responsiveness to extreme weather events.Keywords—ESP32 Datalogger, AWS IoT Core, MQTT Proto-col, High Mountain, Climate Surveillanc
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Future changes of precipitation types in the Peruvian Andes
    (Nature Research, 2024)
    Alvarado Lugo, Robert A.
    ;
    Callañaupa Gutierrez, Stephany
    ;
    Llactayo Peña, Valeria
    ;
    Villalobos Puma, Elver
    ;
    Yarlequé, Christian
    In high-altitude regions, such as the Peruvian Andes, understanding the transformation of precipitation types under climate change is critical to the sustainability of water resources and the survival of glaciers. In this study, we investigate the distribution and types of precipitation on a tropical glacier in the Peruvian Central Andes. We utilized data from an optical-laser disdrometer and compact weather station installed at 4709 m ASL, combined with future climate scenarios from the CMIP6 project, to model potential future changes in precipitation types. Our findings highlight that increasing temperatures could lead to significant reductions in solid-phase precipitation, including snow, graupel and hail, with implications for the mass balance of Andean glaciers. For instance, a 2 °C rise might result in less than 10% of precipitation as solid, in regard to the present day, transforming the hydrological processes of the region. The two future climate scenarios from the CMIP6 project, SSP2-4.5 and SSP5-8.5, offer a broad perspective on potential climate outcomes that could impact precipitation patterns in the Andes. Our study underscores the need to revisit and expand our understanding of high-altitude precipitation in the face of climate change, paving the way for improved water resource management strategies and sustainable glacier preservation efforts in these fragile ecosystems.