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1 IDF_PERSIANN-CDR_CONUS [数据集]

作者:Ombadi, Mohammed

发布日期:2018

关键词:PERSIANN-CDR;Rainfall Frequency Analysis;...

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使用许可:CC BY

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This dataset is developed at the Center for Hydrometeorology and Remote Sensing by Mohammed Ombadi (mombadi@uci.edu) as part of a research study. The data contains intensity-duration-frequency (IDF) curves from satellite-based precipitation product (PERSIANN-CDR) for the Contiguous United States for durations of (1, 2 and 3 days) and return periods of (2, 5, 10, 25, 50 and 100 years).

作者:Keller, C. A.

发布日期:2018

关键词:Raman;atmospheric boundary layer;...

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使用许可:CC BY

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A new method for measuring air temperature profiles in the atmospheric boundary layer at high spatial and temporal resolution is presented. The measurements are based on Raman scattering distributed temperature sensing (DTS) with a fiber optic cable attached to a tethered balloon. These data were used to estimate the height of the stable nocturnal boundary layer. The experiment was successfully
deployed during a two-day campaign in September 2009, providing evidence that DTS is well suited for this atmospheric application. Observed stable temperature profiles exhibit an exponential shape confirming similarity concepts of the temperature inversion close to the surface. The atmospheric mixing height (MH) was estimated to vary between 5 m and 50 m as a result of the nocturnal boundary layer evolution. This value is in good agreement with the MH derived from concurrent Radon-222 (222Rn) measurements and in previous studies.

Raw project data is available by contacting ctemps@unr.edu

作者:

发布日期:2018

关键词:LAND SURFACE;SURFACE RADIATIVE PROPERTIES;...

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使用许可:Unknown

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This dataset contains the Moderate Resolution Imaging Spectroradiometer (MODIS) Airborne Simulator (MAS) multispectral data collected during the SAFARI 2000 project. The flights were undertaken over Southern Africa by the NASA ER-2 aircraft during August and September, 2000.

作者:Emmerik, Van

发布日期:2018

关键词:hydrology;tree sway;...

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使用许可:CC BY

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Trees play a crucial role in the water, carbon and nitrogen cycle on local, regional and global scales. Understanding the exchange of momentum, heat, water, and CO2 between trees and the atmosphere is important to assess the impact of drought, deforestation and climate change. Unfortunately, ground measurements of tree properties such as mass and canopy interception of precipitation are often expensive or difficult due to challenging environments. This paper aims to demonstrate the concept of using robust and affordable accelerometers to measure tree properties and responses. Tree sway is dependent on mass, canopy structure, drag coefficient, and wind forcing. By measuring tree acceleration, we can relate the tree motion to external forcing (e.g., wind, precipitation and related canopy interception) and tree physical properties (e.g., mass, elasticity). Using five months of acceleration data of 19 trees in the Brazilian Amazon, we show that the frequency spectrum of tree sway is related to mass, canopy interception of precipitation, and canopy–atmosphere turbulent exchange.

Raw project data is available by contacting ctemps@unr.edu

作者:Greenberg, Joanne

发布日期:2018

关键词:Nooksack River;Electronic Appendix;...

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使用许可:CC BY

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Nooksack River Water Budget, Electronic Appendix, 2012

作者:Neilson, Bethany

发布日期:2018

关键词:flow;barometric pressure;...

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使用许可:CC BY

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This dataset contains flow, stage and barometric pressure data at Dewitt Springs Campground on the Logan River. The QC1 file is a derived product from in-situ AquaTroll depth data that has been corrected to a benchmark at the site. The barometric pressure data was collected using an in-situ BaroTroll at the site.