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672 results for “August”
Data from: "Comparative genomic resources for spiny lizards (genus Sceloporus)" in Genomic Resources Notes accepted 1 August 2014-30 September 2014
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MASTER: Farmland mapping, California, August, 2003
This dataset includes Level 1B (L1B) and Level 2 (L2) data products from the MODIS/ASTER Airborne Simulator (MASTER) instrument. The spectral data were collected during eight flights aboard a NASA ER-2 aircraft over California, U.S., on 2003-08-05 to 2003-08-11. The objective of this deployment was farmland mapping. This deployment was coordinated by NASA's Dryden Flight Research Center (DRFC), renamed Armstrong Flight Research Center in 2014, located in Edwards, California. Data products include L1B georeferenced multispectral imagery of calibrated radiance in 50 bands covering wavelengths of 0.460 to 12.879 micrometers at approximately 50-meter spatial resolution. Derived L2 data products are emissivity in 5 bands in thermal infrared range (8.58 to 12.13 micrometers) and land surface temperature. The L1B file format is HDF-4, and L2 products are provided in ENVI and KMZ formats. In addition, the dataset includes flight paths, spectral band information, instrument configuration, ancillary notes, and summary information for each flight, and browse images derived from each L1B data file.
MASTER: Airborne Science, California-Nevada, August 2007
This dataset includes Level 1B (L1B) data products from the MODIS/ASTER Airborne Simulator (MASTER) instrument. The spectral data were collected during seven flights aboard a DOE B-200 aircraft over Nevada and California, U.S., from 2007-08-30 to 2007-09-02. This data collection focused on mapping earthquake faults in southern California. This deployment was coordinated by the U.S. Department of Energy's Remote Sensing Laboratory (RSL) located at Nellis Air Force Base near Las Vegas, Nevada. Data products include L1B georeferenced multispectral imagery of calibrated radiance in 50 bands covering wavelengths of 0.460 to 12.879 micrometers at approximately 10-meter spatial resolution. The L1B file format is HDF-4. In addition, the dataset includes flight paths, spectral band information, instrument configuration, ancillary notes, and summary information for each flight, and browse images derived from each L1B data file.
MASTER: Airborne Science, California-Nevada, August, 2004
This dataset includes Level 1B (L1B) data products from the MODIS/ASTER Airborne Simulator (MASTER) instrument. The spectral data were collected during one flight aboard a DOE B-200 aircraft over California and Nevada, U.S., on 2004-08-18 to 2004-08-29. Objectives of this deployment included mapping geological faults in southern California. This deployment was coordinated by the U.S. Department of Energy's Remote Sensing Laboratory (RSL) located at Nellis Air Force Base near Las Vegas, Nevada. Data products include L1B georeferenced multispectral imagery of calibrated radiance in 50 bands covering wavelengths of 0.460 to 12.879 micrometers at approximately 20-meter spatial resolution. The L1B file format is HDF-4. In addition, the dataset includes flight paths, spectral band information, instrument configuration, ancillary notes, and summary information for each flight, and browse images derived from each L1B data file.
MASTER: Instrument validation, California-Oregon-Washington, August, 2003
This dataset includes Level 1B (L1B) data products from the MODIS/ASTER Airborne Simulator (MASTER) instrument. The spectral data were collected during a single flight aboard a NASA WB-57 aircraft over California, Nevada, Oregon, and Washington, U.S., on 2003-08-27. This deployment was an instrument validation flight. Imagery was collected over the Cascade Mountains and Lake Tahoe. Data products include L1B georeferenced multispectral imagery of calibrated radiance in 50 bands covering wavelengths of 0.460 to 12.879 micrometers at approximately 25-meter spatial resolution. The L1B file format is HDF-4. In addition, the dataset includes flight path, spectral band information, instrument configuration, ancillary notes, and summary information for the flight, and browse images derived from each L1B data file.
MASTER: Airborne Science, western US, July-August, 2001, V2
This dataset includes Level 1B (L1B) and Level 2 (L2) data products from the MODIS/ASTER Airborne Simulator (MASTER) instrument. The spectral data were collected during three flights aboard a NASA ER-2 aircraft over California, Nevada, Oregon, Washington, U.S., and British Columbia, Canada, from 2001-07-20 to 2001-08-18. This deployment was coordinated by NASA's Dryden Flight Research Center (DRFC), renamed Armstrong Flight Research Center in 2014, located in Edwards, California. Data products include L1B georeferenced multispectral imagery of calibrated radiance in 50 bands covering wavelengths of 0.460 to 12.879 micrometers at approximately 50-meter spatial resolution. Derived L2 data products are emissivity in 5 bands in thermal infrared range (8.58 to 12.13 micrometers) and land surface temperature. The L1B file format is HDF-4, and L2 products are provided in ENVI and KMZ formats. In addition, the dataset includes flight paths, spectral band information, instrument configuration, ancillary notes, and summary information for each flight, and browse images derived from each L1B data file.
MASTER: Airborne Science, western US, August, 2001, V2
This dataset includes Level 1B (L1B) data products from the MODIS/ASTER Airborne Simulator (MASTER) instrument. The spectral data were collected during 11 flights aboard a DOE B-200 aircraft over California, Nevada, Oregon, and Washington, U.S., on 2001-08-22 to 2001-08-31. This deployment was coordinated by the U.S. Department of Energy's Remote Sensing Laboratory (RSL) located at Nellis Air Force Base near Las Vegas, Nevada. Data products include L1B georeferenced multispectral imagery of calibrated radiance in 50 bands covering wavelengths of 0.460 to 12.879 micrometers at approximately 20-meter spatial resolution. The L1B file format is HDF-4. In addition, the dataset includes flight paths, spectral band information, instrument configuration, ancillary notes, and summary information for each flight, and browse images derived from each L1B data file.
Delta-X: Root Stable Isotopes from Herbaceous Wetlands, MRD, LA, USA, August 2021
This dataset contains carbon-13 (13C) and nitrogen-15 (15N) isotopic signatures of belowground root biomass samples from herbaceous wetlands in the Atchafalaya and Terrebonne basins of the Mississippi River Delta in coastal Louisiana, U.S., during August 2021. The data were collected during the Delta-X Fall deployment. Field measurements were conducted at three sites in the Atchafalaya basin and three sites in the Terrebonne basin. Five of the sites are adjacent to sites from the Coastwide Reference Monitoring System (CRMS). The other site is located in Wax Lake Delta (WLD) without appropriate adjacent CRMS sites. Herbaceous wetland sites in both basins were chosen to represent a salinity gradient including freshwater, brackish, and saline ecosystems. Root biomass samples were collected using a gouge soil auger. Bulk isotopic signatures in living fine roots were measured with a mass spectrometer coupled to an elemental analyzer.
MASTER: California Fire-Burn Area Emergency Response, California, August 2008
This dataset includes Level 1B (L1B) data products from the MODIS/ASTER Airborne Simulator (MASTER) instrument. The spectral data were collected during four flights aboard a DOE B200 aircraft over California, U.S., from 2008-08-20 to 2008-08-27. Objectives included mapping for California Fire-Burn Area Emergency Response (BAER). This deployment was coordinated by the U.S. Department of Energy's Remote Sensing Laboratory (RSL) located at Nellis Air Force Base near Las Vegas, Nevada. Data products include L1B georeferenced multispectral imagery of calibrated radiance in 50 bands covering wavelengths of 0.460 to 12.879 micrometers at approximately 10-meter spatial resolution. The L1B file format is HDF-4. In addition, the dataset includes flight paths, spectral band information, instrument configuration, ancillary notes, and summary information for each flight, and browse images derived from each L1B data file.
MASTER: Airborne Science, Oregon-Wyoming, August 2006
This dataset includes Level 1B (L1B) data products from the MODIS/ASTER Airborne Simulator (MASTER) instrument. The spectral data were collected during two flights aboard a Cessna Caravan aircraft over Oregon and Wyoming, U.S., from 2006-08-01 to 2006-08-03. Data products include L1B georeferenced multispectral imagery of calibrated radiance in 50 bands covering wavelengths of 0.460 to 12.879 micrometers at approximately 10-meter spatial resolution. The L1B file format is HDF-4. In addition, the dataset includes flight paths, spectral band information, instrument configuration, ancillary notes, and summary information for each flight, and browse images derived from each L1B data file.
MASTER: Airborne Science, Southwest US, August 2006
This dataset includes Level 1B (L1B) data products from the MODIS/ASTER Airborne Simulator (MASTER) instrument. The spectral data were collected during 18 flights aboard a DOE B-200 aircraft over Nevada, California and Colorado, U.S., from 2006-08-21 to 2006-09-06. This data collection focused on mapping geological faults. This deployment was coordinated by the U.S. Department of Energy's Remote Sensing Laboratory (RSL) located at Nellis Air Force Base near Las Vegas, Nevada. Data products include L1B georeferenced multispectral imagery of calibrated radiance in 50 bands covering wavelengths of 0.460 to 12.879 micrometers at approximately 10-meter spatial resolution. The L1B file format is HDF-4. In addition, the dataset includes flight paths, spectral band information, instrument configuration, ancillary notes, and summary information for each flight, and browse images derived from each L1B data file.
MASTER: Airborne Science, California-Nevada, August, 2002
This dataset includes Level 1B (L1B) and Level 2 (L2) data products from the MODIS/ASTER Airborne Simulator (MASTER) instrument. The spectral data were collected during three flights aboard a NASA ER-2 and two flights on a DOE B-200 aircraft over California and Nevada U.S. from 2002-08-09 to 2002-08-20. This deployment was coordinated by NASA's Dryden Flight Research Center (DRFC), renamed Armstrong Flight Research Center in 2014, located in Edwards, California, and the U.S. Department of Energy's Remote Sensing Laboratory (RSL) located at Nellis Air Force Base near Las Vegas, Nevada. Data products include L1B georeferenced multispectral imagery of calibrated radiance in 50 bands covering wavelengths of 0.460 to 12.879 micrometers at spatial resolution of 10 to 50 m. Derived L2 data products are emissivity in 5 bands in thermal infrared range (8.58 to 12.13 micrometers) and land surface temperature. The L1B file format is HDF-4, and L2 products are provided in ENVI and KMZ formats. In addition, the dataset includes flight paths, spectral band information, instrument configuration, ancillary notes, and summary information for each flight, and browse images derived from each L1B data file.
LBA-ECO CD-01 Simulated Atmospheric Circulation, CO2 Variation, Tapajos: August 2001
We have investigated mesoscale variations of atmospheric CO2 over a heterogeneous landscape of forests, pastures, and large rivers during the Santarem Mesoscale Campaign (SMC) of August 2001. The variations of atmospheric CO2 concentration were simulated using the Colorado State University (CSU) Regional Atmospheric Modeling System (RAMS) with four nested grids that included a 1-km finest grid centered on the Flona Tapajos. Surface fluxes of CO2 were prescribed in the model using idealized diurnal cycles over forest and pasture vegetation derived from flux tower observations, and over surface water using a value suggested by in situ measurements in the Amazon region. The distribution of vegetation types was derived from the 1-km International Geosphere-Biosphere Programme (IGBP) land-cover dataset version 2.0. Our simulation ran from the 1st through the 15th of August 2001, which was concurrent with the SMC. Evaluation against flux tower observations and the SMC field measurements shows that, in many respects, the model captures observed meteorological variables and CO2 concentrations reasonably well. The results also suggest that the local topography, differences in roughness length between water and land, the T shape juxtaposition of Amazon and Tapajos Rivers, and the resulting horizontal and vertical wind shears, all facilitated the generation of local mesoscale circulations. Possible mechanisms producing a lower level convergence line near the east bank of the Tapajos River during strong trade-wind conditions are also explored. Our modeling study is helping us to understand observed patterns of CO2 fluxes and concentration distribution obtained from flux towers and light aircraft.
Data for ""Approximate multifractal correlation and products of universal multifractal fields, with application to rainfall data" by Auguste Gires, Ioulia Tchiguirinskaia, and Daniel Schertzer, NPG 2020
<p>This data set corresponds to the python scripts and data that were used for the paper :<br> “Approximate multifractal correlation and products of universal multifractal fields, with application to rainfall data” by Auguste Gires, Ioulia Tchiguirinskaia, and Daniel Schertzer which has been published in 2020 in Nonlin. Processes Geophys. (https://www.nonlinear-processes-in-geophysics.net/).</p> <p>Should this data be used, the above mentioned paper should be cited.</p>
The ionospheric scintillation indexes observed by Ultra High Frequency (UHF) band scintillation receiver on 15, 16, and 17 August 2015
<p>The dataset reports the ionospheric scintillation indexes observed by Ultra High Frequency (UHF) band scintillation receiver on 15, 16, and 17 August 2015. Every day's data is saved in a TXT file, whose time resolution is one minute.</p>
Wideband VLF data observed in New Zealand on 26 August 2018
<p>Wideband VLF data observed at Halfway Bush, Dunedin, New Zealand on 26th August 2018.</p>
ALMA Titan wind velocity maps for CH3CN, HC3N and HNC (derived from observations on August 2016 and May 2017)
<p>These FITS files contain wind velocities (in m/s) as a function of angular offset (in RA/dec.) from the center of Titan's disk, derived from ALMA observations of CH3CN, HC3N and HNC in August 2016 and May 2017. We followed the method of Lellouch et al. (2019) to determine radial velocities (along the line of sight) for each gas as a function of spatial coordinate in the ALMA images. This involved extracting individual spectra from the data cubes and fitting the emission lines with Gaussians to determine their Doppler shifts.</p>
Simulering av karbonmonoksid under grottefesten i St.Hanshaugen august 2020
<p>Simulering av et scenario for grottefesten i St. Hanshaugen 29. august 2020. Dette er et scenario basert på en del antagelser som vi presenterer under, og resultatene er derfor forbundet med en del usikkerhet. </p> <p><strong>Scenario</strong><br> Vi antar at aggregatrommet har vært svært tett i lang tid, og dermed oppnådd en konsentrasjon på 2 % CO i aggregatrommet. Dette tallet er noe usikkert, men det ligger innenfor spennet av konsentrasjoner i en studie av bensinaggregater i tette rom gjort av National Institute of Standards and Technology (NIST) i USA i 2010 [1]. Vi baserer oss på vitneutsagn om at “plutselig la vi merke til at det var røyk i rommet og vi kunne lukte eksos”. Da tror vi det ha foregått ufullstendig forbrenning i et lukket rom, og at døra deretter har blitt åpnet. Siden aggregatene gikk over mange timer med dårlig ventilasjon regner vi er det som sannsynlig at CO2 og CO-nivået har steget til nivåer som begrenser effekten til aggregatene. I slike tilfeller stiger CO-nivået til noen prosent. I studien fra NIST stabiliserte CO-nivået seg mellom 0.7 og 2.3 % avhengig av ventilasjonen (for de lavere nivåene var et vindu åpent). </p> <p>Vi vet dessverre lite om aggregatene. Noen har snakket om at det er dieselaggregater, men dette har vi ikke fått bekreftet. Både dieselaggregater og bensinaggregater kan produsere høye konsentrasjoner av CO om de står i tette rom og/eller er dårlig konstruert eller vedlikeholdt. </p> <p>Vi antar at det er 20 grader inne i selve grotten, men 40 grader i aggregatrommet siden aggregatene har stått og gått, og produsert mye varme. Tallet 40 grader henter vi fra den samme studien hos NIST, ved å legge oss litt under toppnivåene de målte når aggregatene hadde gått en stund. Dette tallet er også forbundet med en del usikkerhet, men så vidt vi vurderer det er det viktigste for simuleringen å få med at aggregatrommet er en del varmere enn resten av grotta. </p> <p>Vi starter simuleringen i det døra åpnes. Altså ser vi på spredning av CO fra aggregatrommet og ut i resten av grotten. </p> <p>Vi bruker en geometri for grotten som vi fikk tilsendt av Aftenposten. Vi har tettet alle utganger unntatt en 1x1 meter åpning ved inngangen og en 25x25 cm åpning i aggregatrommet. Vi redigerte geometrien med programmet “Blender”, versjon 2.79. </p> <p>I simuleringen vår er det ingen mennesker inne i grotten. Avhengig av hvor mye folk beveget på seg kan det hende at luften har blir mer blandet i virkeligheten enn i simuleringen. Isolert sett vil dette kunne gjøre at høye konsentrasjoner av CO vil komme nærmere gulvet enn det som framkommer i simuleringen. </p> <p>Simuleringen ble kjørt i “Fire Dynamics Simulator” [2] versjon 6.7.5 fra NIST. Gitteroppløsning på 256x256x32. Se forøvrig filen “Case.fds” for presise detaljer om simuleringen. Simuleringen kan reproduseres ved å installere “Fire Dynamics Simulator” og kjøre kommandoen “mpiexec -np 4 fds Case.fds”. </p> <p>Visualiseringen er gjort med Smokeview, som følger med Fire Dynamics Simulator. </p> <p><strong>Resultater </strong><br> Vi har rendret noen filmer som viser hvordan CO sprer seg i grotten. Tid i sekunder fra begynnelsen av simuleringen er angitt nede til venstre. Filmene er ett minutt lange og svarer til simulert tid på en time. </p> <p>I filen “case_smoke.mp4” viser vi CO-nivået som en svart sky. Dette er ikke uttrykk for at det er svart røyk der inne, men på et elle annen vis må vi vise det. </p> <p>I filen “case_iso.mp4” viser vi CO-nivået med isooverflater, altså flater med konstant nivå med CO. Fargene svarer til følgende nivåer av CO: 0.001 % (grønn), 0.01 % (blå) 0.03 % (lilla), 0.1 % (rød), 0.5 % (mørkerød). Disse nivåene svarer omtrent til 10 ppm (grønn), 100 ppm (blå) 300 ppm (lilla), 1000 ppm (rød), 5000 ppm (mørkerød). </p> <p>I filen “case_inside.mp4” viser vi fra innsiden av grotten, ved toalettene, hvordan CO brer seg innover. Her ser man at CO legger seg oppunder taket, og deretter trekker nedover mot gulvet etterhvert. Nede ved bakkenivå er konsentrasjonene her ute fortsatt lavere enn 10 ppm etter en time. </p> <p>Zip-filen “simulationFiles.zip” inneholder input-filer og output-filer fra Fire Dynamics Simulator. Disse kan brukes til å visualisere simuleringen vi har gjort, samt reprodusere simuleringen. </p> <p>[1] Wang, L., Emmerich, S., Persily, A. (2010). In Situ Experimental Study of Carbon Monoxide Generation by Gasoline-Powered Electric Generator in an Enclosed Space Journal of the Air & Waste Management Association 60(12), 1443-1451. https://dx.doi.org/10.3155/1047-3289.60.12.1443</p> <p>[2] <https://pages.nist.gov/fds-smv/></p>
Town of Ennis traffic calming project August - October 2020
<p>The Western Transporation Institute in partnership with the Town of Ennis and the Montana Department of Transportation conducted a temporary traffic calming project on Main Street in Ennis, MT. The project was installed on August 3rd and was removed on October 19th. The traffic calming included the use of curb extensions, road diets, crosswalks, and restriping to simulate a reconstruction project. The goal of the project was to improve safety for pedestrians along and crossing Main St. Pre-installation data collection was conducted between July 24th and July 30th and post-installation data collection was conducted between September 3rd and September 8th. Speed & volume data, pedestrian counts, and driver yielding rates data were all collected before and after the installation of the traffic calming to determine any impact on these indicators. In addition, a community survey was created in partnership with the Town of Ennis to get feedback from community members and visitors about the project, it's perception, and perceived impact. </p>
Data from: Simple parameterization of aerodynamic roughness lengths and the turbulent heat fluxes at the top of midlatitude August‐one glacier, Qilian Mountains, China
The fluxes of sensible heat (H) and latent heat (LE), which are generally the important parts of the energy and mass balances over glacier surfaces, are widely quantified by the bulk method. However, due to the difficulty of determining the aerodynamic roughness length z0m in this method, H and LE values may still have large uncertainties with significant inaccuracy. To acquire reliable varying and intrinsic z0m values, new simpler parameterizations for z0m values at different ranges of the friction velocity u*b were fitted in this study. The method was implemented using the related meteorological data and glacial sublimation/condensation measured at the top of the August‐one glacier (4817 m a.s.l.) in the Qilian Mountains from 1 July 2016 to 15 August 2017. The parameterization shows that z0m increased sharply when u*b exceeded 0.43 m/s (the approximate threshold value) and that the effect of snowdrift was slight for the hourly z0m values in the range 0.15 ≤ u*b ≤ 0.43 m/s, which could thus be used to calculate the daily z0m. During the wet period (1 July to 24 September 2016 and 5 May to 15 August 2017), the turbulent fluxes calculated by the bulk method showed that net radiation Rnet was the primary source of surface energy (60.7 w/m2), whereas during the dry period (25 September 2016 to 4 May 2017), the main heat sink was the positive H (28.5 w/m2) rather than the negative Rnet (–10.0 w/m2).
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