Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Nancy W Casey"'
Autor:
Timothy B. Wilson, Howard J. Diamond, John Kochendorfer, Tilden P. Meyers, Mark Hall, Nancy W. Casey, C. Bruce Baker, Ronald Leeper, Michael A. Palecki
Publikováno v:
Vadose Zone Journal, Vol 19, Iss 1, Pp n/a-n/a (2020)
Abstract The objective of this study was to evaluate the performance of two commercial‐grade electromagnetic sensors in measuring soil water content for the U.S. Climate Reference Network (USCRN). One sensor was a 50‐MHz coaxial impedance dielect
Externí odkaz:
https://doaj.org/article/cf21690a9aab4b4c8b7ef6e42d57903c
Autor:
Robert J H Dunn, Cesar Azorin-Molina, Matthew J Menne, Zhenzhong Zeng, Nancy W Casey, Cheng Shen
Publikováno v:
Environmental Research Communications. 4:061003
We describe an undocumented change in how calm periods in near-surface wind speed (and direction) observations have been encoded in a subset of global datasets of sub-daily data after 2013. This has resulted in the under-estimation of the number of c
Autor:
Tilden P. Meyers, Nancy W. Casey, John Kochendorfer, Tim Wilson, Ronald D. Leeper, Michael A. Palecki, C. Bruce Baker, Howard J. Diamond, Mark Hall
Publikováno v:
Vadose Zone Journal, Vol 19, Iss 1, Pp n/a-n/a (2020)
The objective of this study was to evaluate the performance of two commercial‐grade electromagnetic sensors in measuring soil water content for the U.S. Climate Reference Network (USCRN). One sensor was a 50‐MHz coaxial impedance dielectric senso
Publikováno v:
Ocean Modelling. 80:24-35
Reanalysis products from MERRA, NCEP2, NCEP1, and ECMWF were used to force an established ocean biogeochemical model to estimate air–sea carbon fluxes (FCO2) and partial pressure of carbon dioxide (pCO2) in the global oceans. Global air–sea carbo
Publikováno v:
Remote Sensing of Environment. 113:1598-1612
A new empirical approach is developed for ocean color remote sensing. Called the Empirical Satellite Radiance-In situ Data (ESRID) algorithm, the approach uses relationships between satellite water-leaving radiances and in situ data after full proces
Autor:
Watson W. Gregg, Nancy W. Casey
Publikováno v:
Journal of Marine Systems. 76:49-63
Ocean phytoplankton, detrital material, and water absorb and scatter light spectrally. The Ocean- Atmosphere Spectral Irradiance Model (OASIM) is intended to provide surface irradiance over the oceans with sufficient spectral resolution to support oc
Autor:
Watson W. Gregg, Nancy W. Casey
Publikováno v:
Remote Sensing of Environment. 111:25-35
Although modem ocean color sensors, such as MODIS and SeaWiFS are often considered global missions, in reality it takes many days, even months, to sample the ocean surface enough to provide complete global coverage. The irregular temporal sampling of
Autor:
Watson W. Gregg, Nancy W. Casey
Publikováno v:
Deep Sea Research Part II: Topical Studies in Oceanography. 54:447-477
Coccolithophores are important ecological and geochemical components of the global oceans. A global three-dimensional model was used to simulate their distributions in a multi-phytoplankton context. The realism of the simulation was supported by comp
Autor:
Watson W. Gregg, Nancy W. Casey
Publikováno v:
Remote Sensing of Environment. 93:463-479
The Sea-viewing Wide Field-of-view Sensor (SeaWiFS) chlorophyll data set was compared to comprehensive archives of in situ chlorophyll data from NASA and NOAA. The global comparison indicated a root mean square (RMS) log error of 31%, with a coeffici
Publikováno v:
Deep Sea Research Part II: Topical Studies in Oceanography. 50:3143-3169
The JGOFS program and NASA ocean-color satellites have provided a wealth of data that can be used to test and validate models of ocean biogeochemistry. A coupled three-dimensional general circulation, biogeochemical, and radiative model of the global