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Journal articles on the topic 'LSWT'

Author: Grafiati

Published: 27 June 2021

Last updated: 29 July 2025

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1

Jiao, Yibo, Zifan Lu, and Mengmeng Wang. "Satellite Data Revealed That the Expansion of China’s Lakes Is Accompanied by Rising Temperatures and Wider Temperature Differences." Remote Sensing 17, no. 9 (2025): 1546. https://doi.org/10.3390/rs17091546.

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Lake surface water area (LSWA) and lake surface water temperature (LSWT) are critical indicators of climate change, responding rapidly to global warming. However, studies on the synergistic variations of LSWA and LSWT are scarce, and the coupling relationships among lakes with different environmental characteristics remain unclear. In this study, the relative growth rate of LSWA (RKLSWA); the absolute growth rates of annual maximum, mean, and minimum LSWTs (i.e., KLSWT_max, KLSWT_mean, KLSWT_min); and the absolute growth rates of the difference between maximum and minimum LSWT (LSWT_mmd) (KLSW

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2

Wu, Yuchen, Fei Ji, Siyi Wang, Yongli He, and Shujuan Hu. "Increased Warming Efficiencies of Lake Heatwaves Enhance Dryland Lake Warming over China." Remote Sensing 16, no. 3 (2024): 588. http://dx.doi.org/10.3390/rs16030588.

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Lake surface water temperature (LSWT) has significantly increased over China and even globally in recent decades due to climate change. However, the responses of LSWTs to climate warming in various climatic regions remain unclear due to the limited lake observations. Satellite-observed LSWT data from the Moderate Resolution Imaging Spectroradiometer (MODIS) dataset were extended using the air2water model. This research aimed to investigate summer LSWT trends across various climatic zones in China, shedding light on the complex interplay between surface air temperatures and LSWT from 1950 to 20

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3

Wang, Rui, Wentao Dong, Jiang Sun, Mariusz Sojka, Mariusz Ptak, and Senlin Zhu. "Long-Term Trends of Lake Surface Water Temperatures in Lowland Polish Temperate Lakes." Atmosphere 16, no. 2 (2025): 120. https://doi.org/10.3390/atmos16020120.

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In this study, long-term lake surface water temperature (LSWT) data were used to investigate the impact of climate change on thermal conditions in 25 Polish lowland lakes. The results show that the warming rate of the annual mean LSWT ranges from 0.14 °C per decade to 0.69 °C per decade with an average value of 0.44 °C per decade. The annual maximum LSWT presented the strongest warming trend, with the warming rate varying between 0.26 °C per decade and 1.06 °C per decade (average value of 0.65 °C per decade). Warming rates were observed in all seasons but with different intensities, with warmi

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4

Zhang, Xin, Kaicun Wang, Marieke A. Frassl, and Bertram Boehrer. "Reconstructing Six Decades of Surface Temperatures at a Shallow Lake." Water 12, no. 2 (2020): 405. http://dx.doi.org/10.3390/w12020405.

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Lake surface water temperature (LSWT) plays a fundamental role in the lake energy budget. However, direct observations of LSWT require considerable effort for acquisition and hence are rare relative to a large number of lakes. In lakes where LSWT has not been covered sufficiently by in situ measurements, remote sensing and lake modeling can be used to produce a fine spatio-temporal record of LSWTs. In our study, the Moderate-Resolution Imaging Spectroradiometer (MODIS) LSWT was used to compare with in situ data at the overpass times over the six sites in Lake Chaohu, a large shallow lake in Ch

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5

Layden, A., S. MacCallum, and C. Merchant. "Determining lake surface water temperatures (LSWTs) worldwide using a tuned 1-dimensional lake model (<i>FLake</i>, v1)." Geoscientific Model Development Discussions 8, no. 10 (2015): 8547–606. http://dx.doi.org/10.5194/gmdd-8-8547-2015.

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Abstract. FLake, a 1-dimensional freshwater lake model, is tuned for 244 globally distributed large lakes using lake surface water temperatures (LSWTs) derived from Along-Track Scanning Radiometers (ATSRs). The model, tuned using only 3 lake properties; lake depth, albedo (snow and ice) and light extinction co-efficient, substantially improves the measured biases in various features of the LSWT annual cycle, including the LSWTs of saline and high altitude lakes. The daily mean absolute differences (MAD) and the spread of differences (±2 standard deviations) across the trial seasonally ice cove

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6

Yu, Soon-Ju, Ju-Yeon Son, Ho-Yeong Kang, Yong-Chul Cho, and Jong-Kwon Im. "Effects of Long-Term Increases in Water Temperature and Stratification on Large Artificial Water-Source Lakes in South Korea." Water 13, no. 17 (2021): 2341. http://dx.doi.org/10.3390/w13172341.

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Long-term changes in air and water temperatures and the resulted stratification phenomena were observed for Soyang Lake (SY), Paldang Lake (PD), Chungju Lake (CJ), and Daecheong Lake (DC) in South Korea. Non-parametric seasonal Kendall and Mann-Kendall tests, Sen slope estimator, and potential energy anomaly (PEA) were applied. The lake surface water temperatures (LSWTs) of SY and DC increased at the same rate (0.125 °C/y), followed by those of CJ (0.071 °C/y) and PD (0.06 °C/y). Seasonally, the LSWT increase rates for all lakes, except PD, were 2–3 times higher than the air temperature increa

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7

Zhao, Shaochun, Hongyan Sun, Jie Cheng, and Guoqing Zhang. "Water Surface Temperature Dynamics of the Three Largest Ice-Contact Lakes in the Patagonia Icefield over the Last 20 Years." Water 17, no. 3 (2025): 385. https://doi.org/10.3390/w17030385.

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The Patagonia Icefield, the largest ice mass in the Southern Hemisphere outside Antarctica, has experienced significant growth and expansion of ice-contact lakes in recent decades, with lake surface water temperature (LSWT) being one of the key influencing factors. LSWT affects glacier melting at the waterline and accelerates glacier mass loss. However, the observations of ice-contact LSWT are often limited to short-term, site-based field measurements, which hinders long-term, whole-lake monitoring. This study examines LSWT for the three largest ice-contact lakes in the Patagonia Icefield—Lake

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8

Váquez Porras, Cėsar Antonio, César Aguirre, Michel Aristoteles Choccña Rejas, and Jhon Brayan Guerrero Salinas. "Variabilidad interanual de la temperatura superficial del lago Titicaca usando imágenes MODIS del invierno (2001-2014)." Revista de Investigación de Física 25, no. 1 (2022): 10–18. http://dx.doi.org/10.15381/rif.v25i1.21030.

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Se investigó la variabilidad interanual de la temperatura del agua superficial del lago (LSWT, por sus siglas en inglés) usando imágenes MODIS para el invierno del 2001-2014 en el lago Titicaca 15°45'00''S - 69°25'00''O. Utilizamos el producto MOD11A2 de temperatura de la superficie terrestre (LST), que renombraremos como LSWT. Los datos LST de detección remota se obtuvieron del sensor MODIS a bordo del satélite Terra como un compuesto de 8 días, con una resolución espacial de 1 km. Durante el invierno austral (junio, julio, y agosto), el producto MOD06L2 cloud fraction mostró el cielo despeja

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9

Guo, Linan, Hongxing Zheng, Yanhong Wu, et al. "An integrated dataset of daily lake surface water temperature over the Tibetan Plateau." Earth System Science Data 14, no. 7 (2022): 3411–22. http://dx.doi.org/10.5194/essd-14-3411-2022.

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Abstract. Lake surface water temperature (LSWT) is a critical physical property of the aquatic ecosystem and an evident indicator of climate change. By combining the strengths of satellite-based observation and modeling, we have produced an integrated daily LSWT for 160 lakes across the Tibetan Plateau where in situ observation is limited. The MODIS-based lake-wide mean LSWT in the integrated dataset includes the daytime, nighttime, and daily mean for the period 2000–2017. The MODIS-based daily mean LSWT is used to calibrate a simplified physically based model (i.e., modified air2water model),

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10

Layden, Aisling, Stuart N. MacCallum, and Christopher J. Merchant. "Determining lake surface water temperatures worldwide using a tuned one-dimensional lake model (<i>FLake</i>, v1)." Geoscientific Model Development 9, no. 6 (2016): 2167–89. http://dx.doi.org/10.5194/gmd-9-2167-2016.

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Abstract. A tuning method for FLake, a one-dimensional (1-D) freshwater lake model, is applied for the individual tuning of 244 globally distributed large lakes using observed lake surface water temperatures (LSWTs) derived from along-track scanning radiometers (ATSRs). The model, which was tuned using only three lake properties (lake depth, snow and ice albedo and light extinction coefficient), substantially improves the measured mean differences in various features of the LSWT annual cycle, including the LSWTs of saline and high altitude lakes, when compared to the observed LSWTs. Lakes whos

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11

Wang, Siyi, Yongli He, Shujuan Hu, et al. "Enhanced Warming in Global Dryland Lakes and Its Drivers." Remote Sensing 14, no. 1 (2021): 86. http://dx.doi.org/10.3390/rs14010086.

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Lake surface water temperature (LSWT) is sensitive to climate change. Previous studies have found that LSWT warming is occurring on a global scale and is expected to continue in the future. Recently, new global LSWT data products have been generated using satellite remote sensing, which provides an inimitable opportunity to study the LSWT response to global warming. Based on the satellite observations, we found that the warming rate of global lakes is uneven, with apparent regional differences. Indeed, comparing the LSWT warming in different climate zones (from arid to humid), the lakes in dry

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12

Lazhu, Kun Yang, Jun Qin, et al. "A Strict Validation of MODIS Lake Surface Water Temperature on the Tibetan Plateau." Remote Sensing 14, no. 21 (2022): 5454. http://dx.doi.org/10.3390/rs14215454.

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Lake surface water temperature (LSWT) is a key parameter in understanding the variability of lake thermal conditions and evaporation. The MODIS-derived LSWT is widely used as a reference for lake model validations and process studies in data-scarce regions. In this study, the accuracy of the MODIS LSWT was examined on the Tibetan Plateau (TP). In-situ subsurface temperatures were collected at five large lakes. Although the observation period covers from summer to winter, only the observations during the lake turnover period (from October to freeze-up), when the lakes are well mixed, can be use

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13

Pedreros-Guarda, María, Rodrigo Abarca-del-Río, Karen Escalona, Ignacio García, and Óscar Parra. "A Google Earth Engine Application to Retrieve Long-Term Surface Temperature for Small Lakes. Case: San Pedro Lagoons, Chile." Remote Sensing 13, no. 22 (2021): 4544. http://dx.doi.org/10.3390/rs13224544.

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Lake surface water temperature (LSWT) is a crucial water quality parameter that modulates many lake and reservoir processes. Therefore, it is necessary to monitor it from a long-term perspective. Over the last decades, many methods to retrieve LSWT fields from satellite imagery have been developed. This work aims to test, implement and automate six methods. These are performed in the Google Earth Engine (GEE) platform, using 30 m spatial resolution images from Landsat 7 and 8 satellites for 2000–2020. Automated methods deliver long-term time series. Series are then calibrated with in situ data

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14

Aslan, N., and D. Koc-San. "INVESTIGATION OF THE CHANGES OF LAKE SURFACE TEMPERATURES AND AREAS: CASE STUDY OF BURDUR AND EGIRDIR LAKES, TURKEY." International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLIII-B3-2021 (June 28, 2021): 299–304. http://dx.doi.org/10.5194/isprs-archives-xliii-b3-2021-299-2021.

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Abstract. The world's average surface temperature has been increasing in recent decades. This situation is expected to affect aquatic systems and lakes are one of the most important aquatic systems. The main aims of this study are to examine Lake Surface Water Temperature (LSWT) and area changes of Burdur and Egirdir lakes located in the West Mediterranean Region (TR61) of Turkey for the years 1998, 2008 and 2018 using Landsat satellite images. For this purpose, initially, Normalized Difference Vegetation Index (NDVI) and Modified Normalized Difference Water Index (MNDWI) images were generated

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15

Ouyang, Xiaoying, Dongmei Chen, Shugui Zhou, et al. "A Slight Temperature Warming Trend Occurred over Lake Ontario from 2001 to 2018." Land 10, no. 12 (2021): 1315. http://dx.doi.org/10.3390/land10121315.

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Satellite-derived lake surface water temperature (LSWT) measurements can be used for monitoring purposes. However, analyses based on the LSWT of Lake Ontario and the surrounding land surface temperature (LST) are scarce in the current literature. First, we provide an evaluation of the commonly used Moderate Resolution Imaging Spectroradiometer (MODIS)-derived LSWT/LST (MOD11A1 and MYD11A1) using in situ measurements near the area of where Lake Ontario, the St. Lawrence River and the Rideau Canal meet. The MODIS datasets agreed well with ground sites measurements from 2015–2017, with an R2 cons

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16

Tavares, Matheus, Augusto Cunha, David Motta-Marques, et al. "Comparison of Methods to Estimate Lake-Surface-Water Temperature Using Landsat 7 ETM+ and MODIS Imagery: Case Study of a Large Shallow Subtropical Lake in Southern Brazil." Water 11, no. 1 (2019): 168. http://dx.doi.org/10.3390/w11010168.

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Water temperature regulates many processes in lakes; therefore, evaluating it is essential to understand its ecological status and functioning, and to comprehend the impact of climate change. Although few studies assessed the accuracy of individual sensors in estimating lake-surface-water temperature (LSWT), comparative analysis considering different sensors is still needed. This study evaluated the performance of two thermal sensors, MODIS and Landsat 7 ETM+, and used Landsat methods to estimate the SWT of a large subtropical lake. MODIS products MOD11 LST and MOD28 SST were used for comparis

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17

Wen, Lijuan, Chan Wang, Zhaoguo Li, et al. "Thermal Responses of the Largest Freshwater Lake in the Tibetan Plateau and Its Nearby Saline Lake to Climate Change." Remote Sensing 14, no. 8 (2022): 1774. http://dx.doi.org/10.3390/rs14081774.

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There are thousands of lakes in the Tibetan Plateau (TP), and most are saline. However, little is known about the responses of TP lakes to climate change, especially saline ones. We investigated the thermal responses of the largest freshwater lake (Ngoring Lake) in the TP and its nearby small saline lake (Hajiang Salt Pond) to climate change using the improved lake scheme in the Community Land model (CLM4-LISSS), in which we primarily developed the salinity parameterizations previously evaluated in the Great Salt Lake in USA and further considered the effect of salinity on the temperature of t

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18

Riffler, M., and S. Wunderle. "Lake surface water temperatures of European Alpine lakes (1989–2013) based on the Advanced Very High Resolution Radiometer (AVHRR) 1 km data set." Earth System Science Data Discussions 7, no. 1 (2014): 305–34. http://dx.doi.org/10.5194/essdd-7-305-2014.

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Abstract. Lake water temperature (LWT) is an important driver of lake ecosystems and it has been identified as an indicator of climate change. Thus, the Global Climate Observing System (GCOS) lists LWT as an Essential Climate Variable (ECV). Although for some European lakes long in situ time series of LWT do exist, many lakes are not observed or only on a non-regular basis making these observations insufficient for climate monitoring. Satellite data can provide the information needed. However, only few satellite sensors offer the possibility to analyse time series which cover 25 years or more.

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19

Senyshen, Matthew D., and Dongmei Chen. "The Impact of Land Cover Change on Surface Water Temperature of Small Lakes in Eastern Ontario from 1985 to 2020." Land 12, no. 3 (2023): 547. http://dx.doi.org/10.3390/land12030547.

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Land Cover Change (LCC) has been shown to significantly impact the magnitude and trend of Land Surface Temperature (LST). However, the influence of LCC near waterbodies outside of an urban environment remain less understood. Waterbodies serve as local climate moderators where nearby LCC has the potential to decrease their cooling ability. Altered water surface temperatures can lead to altered species migration and distribution in aquatic species depending on a given species thermal boundary. In this study, using remotely sensed land cover and surface temperature data, we investigate the role t

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20

Dye, Adrian, Robert Bryant, Emma Dodd, Francesca Falcini, and David M. Rippin. "Warm Arctic Proglacial Lakes in the ASTER Surface Temperature Product." Remote Sensing 13, no. 15 (2021): 2987. http://dx.doi.org/10.3390/rs13152987.

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Despite an increase in heatwaves and rising air temperatures in the Arctic, little research has been conducted into the temperatures of proglacial lakes in the region. An assumption persists that they are cold and uniformly feature a temperature of 1 °C. This is important to test, given the rising air temperatures in the region (reported in this study) and potential to increase water temperatures, thus increasing subaqueous melting and the retreat of glacier termini from where they are in contact with lakes. Through analysis of ASTER surface temperature product data, we report warm (>4 °C)

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21

Hariyanto, Irena Hana, Danar Guruh Pratomo, Khomsin Khomsin, et al. "Perancangan dan Implementasi Prototipe Sensor Termal Geomarine CTD 1.0 berbasis Arduino untuk Observasi In-situ Lake Surface Water Temperature (LSWT)." GEOID 19, no. 2 (2024): 212–23. http://dx.doi.org/10.12962/geoid.v19i2.1218.

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Parameter suhu permukaan air danau atau Lake Water Surface Temperature (LSWT) merupakan salah satu indikator penting dalam pemantauan lingkungan perairan seperti sebagai parameter perubahan iklim dan kerusakan lingkungan akibat aktivitas manusia. Berbagai metode dalam penentuan LSWT telah diterapkan namun yang paling representatif adalah pengambilan secara in-situ menggunakan instrumen salah satunya Conductivity, Temperature, Depth (CTD). Faktor ketidakjangkauan harga dari alat tersebut secara komersil menjadi pertimbangan utama dalam penelitian ini. Prototipe yang dihasilkan terdiri atas sens

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22

Li, Zhenghao, Zhijie Zhang, Shengqing Xiong, Wanchang Zhang, and Rui Li. "Lake Surface Temperature Predictions under Different Climate Scenarios with Machine Learning Methods: A Case Study of Qinghai Lake and Hulun Lake, China." Remote Sensing 16, no. 17 (2024): 3220. http://dx.doi.org/10.3390/rs16173220.

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Accurate prediction of lake surface water temperature (LSWT) is essential for understanding the impacts of climate change on aquatic ecosystems and for guiding environmental management strategies. Predictions of LSWT for two prominent lakes in northern China, Qinghai Lake and Hulun Lake, under various future climate scenarios, were conducted in the present study. Utilizing historical hydrometeorological data and MODIS satellite observations (MOD11A2), we employed three advanced machine learning models—Random Forest (RF), XGBoost, and Multilayer Perceptron Neural Network (MLPNN)—to predict mont

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23

White, Charles, Andrew Heidinger, Steven Ackerman, and Peter McIntyre. "A Long-Term Fine-Resolution Record of AVHRR Surface Temperatures for the Laurentian Great Lakes." Remote Sensing 10, no. 8 (2018): 1210. http://dx.doi.org/10.3390/rs10081210.

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Inland waters are warming at highly variable rates that often differ from regional air temperature trends. This variable warming is partially attributable to an individual lake’s geographical and morphological characteristics. In very large lakes, significant intralake variability in long-term warming trends has also been observed. In light of this intralake and interlake heterogeneity of lake surface water temperature (LSWT) and LSWT trends, we revisit the 1.1 km Advanced Very High Resolution Radiometer (AVHRR) record for the Laurentian Great Lakes. In this work, we have assembled a long-term

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24

Rontu, Laura, Kalle Eerola, and Matti Horttanainen. "Validation of lake surface state in the HIRLAM v.7.4 numerical weather prediction model against in situ measurements in Finland." Geoscientific Model Development 12, no. 8 (2019): 3707–23. http://dx.doi.org/10.5194/gmd-12-3707-2019.

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Abstract. The High Resolution Limited Area Model (HIRLAM), used for the operational numerical weather prediction in the Finnish Meteorological Institute (FMI), includes prognostic treatment of lake surface state since 2012. Forecast is based on the Freshwater Lake (FLake) model integrated into HIRLAM. Additionally, an independent objective analysis of lake surface water temperature (LSWT) combines the short forecast of FLake to observations from the Finnish Environment Institute (SYKE). The resulting description of lake surface state – forecast FLake variables and analysed LSWT – was compared

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25

Albarqouni, Mohammed M. Y., Nur Yagmur, Filiz Bektas Balcik, and Aliihsan Sekertekin. "Assessment of Spatio-Temporal Changes in Water Surface Extents and Lake Surface Temperatures Using Google Earth Engine for Lakes Region, Türkiye." ISPRS International Journal of Geo-Information 11, no. 7 (2022): 407. http://dx.doi.org/10.3390/ijgi11070407.

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This study aims to extract water surface area and lake surface water temperature (LSWT), and to present long-term spatio-temporal analysis of these variables together with meteorological parameters. Three lakes in Türkiye’s Lakes Region, namely, Lake Burdur, Egirdir, and Beysehir, were considered as test sites. The normalized difference water index (NDWI) was applied to Landsat 5 and 8 data from 2000 to 2021 to extract the water extent in the Google Earth Engine (GEE) cloud-based platform. In addition to the lake surface area, Landsat thermal images were used to examine the LSWT. The findings

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26

Riffler, M., G. Lieberherr, and S. Wunderle. "Lake surface water temperatures of European Alpine lakes (1989–2013) based on the Advanced Very High Resolution Radiometer (AVHRR) 1 km data set." Earth System Science Data 7, no. 1 (2015): 1–17. http://dx.doi.org/10.5194/essd-7-1-2015.

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Abstract. Lake water temperature (LWT) is an important driver of lake ecosystems and it has been identified as an indicator of climate change. Consequently, the Global Climate Observing System (GCOS) lists LWT as an essential climate variable. Although for some European lakes long in situ time series of LWT do exist, many lakes are not observed or only on a non-regular basis making these observations insufficient for climate monitoring. Satellite data can provide the information needed. However, only few satellite sensors offer the possibility to analyse time series which cover 25 years or mor

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27

Gerber, Brandon S., James L. Tangler, Earl P. N. Duque, and J. David Kocurek. "Peak and Post-Peak Power Aerodynamics from Phase VI NASA Ames Wind Turbine Data." Journal of Solar Energy Engineering 127, no. 2 (2005): 192–99. http://dx.doi.org/10.1115/1.1862260.

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Constant speed/pitch rotor operation lacks adequate theory for predicting peak and post-peak power. The objective of this study was to identify and quantify how measured blade element performance characteristics from the Phase VI NASA Ames 24m×36m80ft×120ft wind tunnel test of a two-bladed, tapered, twisted rotor relate to the prediction of peak and post-peak rotor power. The performance prediction code, NREL’s Lifting Surface Prescribed Wake code (LSWT), was used to study the flow physics along the blade. Airfoil lift and drag coefficients along the blade were derived using the predicted angl

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Jodiputra, J., S. Tobing, H. Gunawan, and M. G. Andika. "Study on Drag Coefficient (CD) Value of Low-Energy Prototype Class Car." journal of Mechanical Engineering 17, no. 2 (2020): 109–28. http://dx.doi.org/10.24191/jmeche.v17i2.15304.

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Researches on car design are closely related to the field of aerodynamics. The design was done to minimize the drag force. The experimental method was only used for testing the initial design and the final design. Improvement and modification were done by using the CFD simulation. The experiments were done using the Low Speed Wind Tunnel (LSWT) owned by the National Laboratory for Aerodynamics, Aeroelastics, and Aeroacoustics Technology. The Reynolds number ranged from 505,225 to 671,528. The research began with the initial design called JM-5, tested in the LSWT. Modifications were done throug

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29

Asghar, Umair, Muhammad Anas Wazir, Muhammad Kaleem Wazir, Abbas Khan, Muhammad Usama, and Osama Subhan. "Design and Fabrication of Low-Speed Wind Tunnel (LSWT)." Pakistan Journal of Engineering and Technology 6, no. 4 (2024): 23–32. http://dx.doi.org/10.51846/vol6iss4pp23-32.

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The design and fabrication of a low-speed wind tunnel (LSWT), which is a critical component for testing and comprehending aircraft aerodynamics, is presented in this study. Despite the increasing prominence of computational fluid dynamics (CFDs) in manufacturing engineering, wind tunnels remain essential for the intricate development of aircraft and automobile designs with complex flow interactions. Using SolidWorks, we focused on controlling flow turbulence approaching the test section, emphasizing performance and quality parameters. The construction of the wind tunnel used plywood with an ax

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30

Li, Peilu, Chunguang Xu, Qinxue Pan, Yuren Lu, and Shuangyi Li. "Denoising of LCR Wave Signal of Residual Stress for Rail Surface Based on Lifting Scheme Wavelet Packet Transform." Coatings 11, no. 5 (2021): 496. http://dx.doi.org/10.3390/coatings11050496.

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According to the acousto elastic effect, the residual stress on the surface of the rail can be evaluated by measuring the change in the propagation velocity of ultrasonic waves, such as longitudinal critically refracted (LCR) waves on the surface of the rail. The LCR wave signal is often polluted by a variety of noise sources, coupled with the influence of the poor surface condition of the inspected component, which greatly reduces the detectability and online measurement ability of the LCR wave signal. This paper proposes the application of the lifting scheme wavelet packet transform (LSWPT)

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31

Junwu, Li, Binhua Li, and Yaoxi Jiang. "An Infrared and Visible Image Fusion Algorithm Based on LSWT-NSST." IEEE Access 8 (2020): 179857–80. http://dx.doi.org/10.1109/access.2020.3028088.

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Ptak, Mariusz, Mariusz Sojka, Katarzyna Szyga-Pluta, Muhammad Yousuf Jat Baloch, and Teerachai Amnuaylojaroen. "Is Everything Lost? Recreating the Surface Water Temperature of Unmonitored Lakes in Poland." Resources 14, no. 4 (2025): 67. https://doi.org/10.3390/resources14040067.

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One of the fundamental features of lakes is water temperature, which determines the functioning of lake ecosystems. However, the overall range of information related to the monitoring of this parameter is quite limited, both in terms of the number of lakes and the duration of measurements. This study addresses this gap by reconstructing the lake surface water temperature (LSWT) of six lakes in Poland from 1994 to 2023, where direct measurements were discontinued. The reconstruction is based on the Air2Water model, which establishes a statistical relationship between LSWT and air temperature. M

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Maligaya, Vann Harvey, Analy Baltodano, Afnan Agramont, and Ann van Griensven. "Exploring Trends and Variability of Water Quality over Lake Titicaca Using Global Remote Sensing Products." Remote Sensing 16, no. 24 (2024): 4785. https://doi.org/10.3390/rs16244785.

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Understanding the current water quality dynamics is necessary to ensure that ecological and sociocultural services are provided to the population and the natural environment. Water quality monitoring of lakes is usually performed with in situ measurements; however, these are costly, time consuming, laborious, and can have limited spatial coverage. Nowadays, remote sensing offers an alternative source of data to be used in water quality monitoring; by applying appropriate algorithms to satellite imagery, it is possible to retrieve water quality parameters. The use of global remote sensing water

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Ul Haque, Anwar, Nik Mohamad Amri Hafiz, S. M. Kashif, et al. "Design and Fabrication of a Winged Hybrid Airship Model for IIUM-LSWT." Advanced Materials Research 1115 (July 2015): 513–16. http://dx.doi.org/10.4028/www.scientific.net/amr.1115.513.

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Wind Tunnel Testing on a subscaled model of a winged hybrid airship requires a faithful reproduction of all geometric details of actual airship. Due to huge volume of hull, geometrical parameters of such airships are quite different from that of an aircraft. In this article, a scheme for designing such models is described alongwith a review of different strategies available for manufacturing of its prototype wind tunnel model in IIUM low speed wind tunnel. Similar to aircrafts, major contributing factors for scaling, design and manufacturing of a subscaled model of hybrid airships are discusse

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Hussain, Ihssan Y., and Anmar Hamid Ali. "Testing and Commissioning of a Low-Speed Wind Tunnel (LSWT) Test Section." Journal of Engineering 20, no. 11 (2023): 106–25. http://dx.doi.org/10.31026/j.eng.2014.11.08.

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The calibration of a low-speed wind tunnel (LSWT) test section had been made in the present work. The tunnel was designed and constructed at the Aerodynamics Lab. in the Mechanical Engineering Department/University of Baghdad. The test section design speed is 70 m/s. Frictional loses and uniformity of the flow inside the test section had been tested and calibrated based on the British standards for flow inside ducts and conduits. Pitot-static tube, boundary layer Pitot tube were the main instruments which were used in the present work to measure the flow characteristics with emphasize on the v

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Matta, Erica, Marina Amadori, Gary Free, Claudia Giardino, and Mariano Bresciani. "A Satellite-Based Tool for Mapping Evaporation in Inland Water Bodies: Formulation, Application, and Operational Aspects." Remote Sensing 14, no. 11 (2022): 2636. http://dx.doi.org/10.3390/rs14112636.

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With the increase of evaporation projected for water bodies worldwide, there is a growing need for flexible and low data-demanding tools enabling the monitoring and management of water resources. This study presents a simple satellite-based tool named LakeVap specifically designed for mapping evaporation from lakes and reservoirs. LakeVap requires a small amount of potentially available data with a global coverage. The tool follows a Dalton-type approach and produces instantaneous (i.e., hourly) and daily evaporation maps from satellite-derived Lake Surface Water Temperature (LSWT) maps and si

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Zhang, Runze, Steven Chan, Rajat Bindlish, and Venkataraman Lakshmi. "Evaluation of Global Surface Water Temperature Data Sets for Use in Passive Remote Sensing of Soil Moisture." Remote Sensing 13, no. 10 (2021): 1872. http://dx.doi.org/10.3390/rs13101872.

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Inland open water bodies often pose a systematic error source in the passive remote sensing retrievals of soil moisture. Water temperature is a necessary variable used to compute water emissions that is required to be subtracted from satellite observation to yield actual emissions from the land portion, which in turn generates accurate soil moisture retrievals. Therefore, overestimation of soil moisture can often be corrected using concurrent water temperature data in the overall mitigation procedure. In recent years, several data sets of lake water temperature have become available, but their

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Spehr, C., and T. Ahlefeldt. "Comparison of microphone array measurements in the closed test section of LSWT and ETW." CEAS Aeronautical Journal 10, no. 1 (2019): 267–85. http://dx.doi.org/10.1007/s13272-019-00386-1.

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Toffolon, Marco, Luca Cortese, and Damien Bouffard. "SELF v1.0: a minimal physical model for predicting time of freeze-up in lakes." Geoscientific Model Development 14, no. 12 (2021): 7527–43. http://dx.doi.org/10.5194/gmd-14-7527-2021.

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Abstract. Predicting the freezing time in lakes is achieved by means of complex mechanistic models or by simplified statistical regressions considering integral quantities. Here, we propose a minimal model (SELF) built on sound physical grounds that focuses on the pre-freezing period that goes from mixed conditions (lake temperature at 4 ∘C) to the formation of ice (0 ∘C at the surface) in dimictic lakes. The model is based on the energy balance involving the two main processes governing the inverse stratification dynamics: cooling of water due to heat loss and wind-driven mixing of the surfac

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Rogowski, Krzysztof, and Martin O. L. Hansen. "RANS Simulations of Flow Past an DU-91-W2-250 Airfoil at High Reynolds Number." E3S Web of Conferences 44 (2018): 00150. http://dx.doi.org/10.1051/e3sconf/20184400150.

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This paper presents numerical results of the DU-91-W2-250 airfoil. Reynolds-averaged Navier–Stokes (RANS) simulations of the 2D profile are performed employing the Transient SST turbulence model. The airfoil was investigated for the Reynolds number of 6 106. Lift and drag coefficients are compared with the experimental data from LM Low Speed Wind Tunnel (LSWT). The results of lift and drag coefficients obtained using the SST Transient model are in a good agreement in comparison with the experiment in the angle of attack range from -10° to 10°. The static pressure distributions calculated by th

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Xu, Shanshan, Kun Yang, Yuanting Xu, et al. "Urban Land Surface Temperature Monitoring and Surface Thermal Runoff Pollution Evaluation Using UAV Thermal Remote Sensing Technology." Sustainability 13, no. 20 (2021): 11203. http://dx.doi.org/10.3390/su132011203.

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With the continuous advancement of urbanization, the impervious surface expands. Urbanization has changed the structure of the natural land surface and led to the intensification of the urban heat island (UHI) effect. This will affect the surface runoff temperature, which, in turn, will affect the surface water temperature of urban lakes. This study will use UAS TIR (un-manned aerial system thermal infrared radiance) remote sensing and in situ observation technology to monitor the urban space surface temperature and thermal runoff in Kunming, Yunnan, in summer; explore the feasibility of UAS T

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Zolfaghari, Kiana, Claude R. Duguay, and Homa Kheyrollah Pour. "Satellite-derived light extinction coefficient and its impact on thermal structure simulations in a 1-D lake model." Hydrology and Earth System Sciences 21, no. 1 (2017): 377–91. http://dx.doi.org/10.5194/hess-21-377-2017.

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Abstract. A global constant value of the extinction coefficient (Kd) is usually specified in lake models to parameterize water clarity. This study aimed to improve the performance of the 1-D freshwater lake (FLake) model using satellite-derived Kd for Lake Erie. The CoastColour algorithm was applied to MERIS satellite imagery to estimate Kd. The constant (0.2 m−1) and satellite-derived Kd values as well as radiation fluxes and meteorological station observations were then used to run FLake for a meteorological station on Lake Erie. Results improved compared to using the constant Kd value (0.2

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Cai, Jielong, and Sidaard Gunasekaran. "Frequency Response of RC Propellers to Streamwise Gusts in Forward Flight." Wind 3, no. 2 (2023): 253–72. http://dx.doi.org/10.3390/wind3020015.

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The RC propeller performance under steady and sinusoidally time-varying freestream (stream-wise or longitudinal gust) was investigated in the University of Dayton Low-Speed Wind Tunnel (UD-LSWT) in the open-jet configuration. The propellers were tested at varying incidence angles and reduced frequencies. The streamwise gust was created by actuating the shuttering system located at the test section exit and was characterized using hot-wire anemometry. A system identification model was developed for the shuttering system to determine the shutter actuation profile that would result in a sinusoida

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Murtadho, Ali, Moch Chotib, and Siti Masrohatin. "Poligami dalam Al-Qur’an (Studi Komparatif Pemikiran Nashr Hamid Abu Zayd dan Muhammad Shahrur)." Instructional Development Journal 6, no. 3 (2023): 282. https://doi.org/10.24014/idj.v6i3.29371.

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Poligamil merupakan salahl satu temal penting yangl mendapat perhatianl khusus daril Allah lSwt. Sehingga tidakl mengherankan kalaul Dia meletakkannyal pada awall surat anl-Nisa’ dalaml kitabnya yangl mulia. paral Mufassir danl para Ahlil fiqih, terkadang mengabaikan redaksil umum ayatl dan mengabaikanl keterkaitan eratl di antaral masalah poligamil dengan paral janda yangl memiliki anakl-anak lyatim. Penelitian ini menggunakan metode qualitative research untuk analisisnya. Yaitu penelitian untuk memahami fenomena tentangl apa yangl dialami olehl subjek, persepsi, motivasi, lpemikiran dan tind

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Amieva, J. F., A. Austoni, M. Bresciani, and M. A. Brovelli. "ANALYSIS OF THE REMOTELY SENSED WATER QUALITY PARAMETERS OF THE INSUBRIC LAKES: METHODS AND RESULTS OF THE INTERREG SIMILE PROJECT." International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLVIII-M-1-2023 (April 21, 2023): 9–16. http://dx.doi.org/10.5194/isprs-archives-xlviii-m-1-2023-9-2023.

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Abstract. Lakes are a fundamental component of the environment and the territory and represent a precious source of fresh water for various uses. The area of the Prealps north of the Po valley in Italy is characterized by the presence of lakes which represent almost 80% of the total volume of fresh water in Italy (Rogora et al., 2018). The Insubric lakes (Lugano, Maggiore and Como) have their shared basins between Italy and Switzerland, and they are the objective of the SIMILE project, a cross-border Italian-Swiss project that aims to improve their coordinated management and strengthen stakeho

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Gunasekaran, Sidaard, and Daniel Curry. "On the Wake Properties of Segmented Trailing Edge Extensions." Aerospace 5, no. 3 (2018): 89. http://dx.doi.org/10.3390/aerospace5030089.

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Changes in the amount and the distribution of mean and turbulent quantities in the free shear layer wake of a 2D National Advisory Committee for Aeronautics (NACA) 0012 airfoil and an AR 4 NACA 0012 wing with passive segmented rigid trailing edge (TE) extensions were investigated at the University of Dayton Low Speed Wind Tunnel (UD-LSWT). The TE extensions were intentionally placed at zero degrees with respect to the chord line to study the effects of segmented extensions without changing the effective angle of attack. Force based experiments were used to determine the total lift coefficient

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Xie, Xiao-Jie, Jun-Song Sun, Ji-Hong Qin, and Huai-Ming Guo. "Pseudo-Landau Levels of Hexagonal Lattice Quantum Antiferromagnets Under Bending Strain." Acta Physica Sinica 73, no. 2 (2024): 020202. http://dx.doi.org/10.7498/aps.73.20231231.

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The pseudo-Landau energy levels of a hexagonal lattice quantum antiferromagnet under bending strain are studied by linear spin-wave theory(LSWT) and quantum Monte Carlo method(QMC). Through the linear spin wave theory, it is found that the magnetic pseudo-Landau energy level appears at the high-energy end of the magnon spectrum, and the energy level spacing is proportional to the square root of the energy level index. Both the linear spin wave theory and the quantum Monte Carlo method show that the local magnetization gradually weakens with the gradual increase of the strain strength at the sa

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Holzman, Mauro, Ankur Srivastava, Raúl Rivas, and Alfredo Huete. "Evaluating the Relationship Between Vegetation Status and Soil Moisture in Semi-Arid Woodlands, Central Australia, Using Daily Thermal, Vegetation Index, and Reflectance Data." Remote Sensing 17, no. 4 (2025): 635. https://doi.org/10.3390/rs17040635.

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Wet rainfall pulses control vegetation growth through evapotranspiration in most dryland areas. This topic has not been extensively analyzed with respect to the vast semi-arid ecosystems of Central Australia. In this study, we investigated vegetation water responses to in situ root zone soil moisture (SM) variations in savanna woodlands (Mulga) in Central Australia using satellite-based optical and thermal data. Specifically, we used the Land Surface Water Index (LSWI) derived from the Advanced Himawari Imager on board the Himawari 8 (AHI) satellite, alongside Land Surface Temperature (LST) fr

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Karakus, Pinar. "Investigation of Meteorological Effects on Çivril Lake, Turkey, with Sentinel-2 Data on Google Earth Engine Platform." Sustainability 15, no. 18 (2023): 13398. http://dx.doi.org/10.3390/su151813398.

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Lakes and reservoirs, comprising surface water bodies that vary significantly seasonally, play an essential role in the global water cycle due to their ability to hold, store, and clean water. They are crucial to our planet’s ecology and climate systems. This study analyzed Harmonized Sentinel-2 images using the Google Earth Engine (GEE) cloud platform to examine the short-term changes in the surface water bodies of Çivril Lake from March 2018 to March 2023 with meteorological data and lake surface water temperature (LSWT). This study used the Sentinel-2 Level-2A archive, a cloud filter, the N

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Gunasekaran, Sidaard, and Aaron Altman. "Far Wake and Its Relation to Aerodynamic Efficiency." Energies 14, no. 12 (2021): 3641. http://dx.doi.org/10.3390/en14123641.

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Correlations were found between the aerodynamic efficiency and the mean and fluctuating quantities in the far wake of a wall-to-wall SD7003 model and an AR 4 flat plate. This correlation was described algebraically by modeling the wake signature as a function of wing geometry and initial conditions. The model was benchmarked against experimental results to elicit the wing performance as a function of angle of attack by interrogating the wake. In these algebraic models, the drag coefficient along with other initial conditions of the turbulent generator (either airfoil or wing) were used to reco

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