Zobrazeno 1 - 10
of 49
pro vyhledávání: '"Raju V. Datla"'
Publikováno v:
Journal of Research of the National Institute of Standards and Technology
The need to understand and monitor climate change has led to proposed radiometric accuracy requirements for space-based remote sensing instruments that are very stringent and currently outside the capabilities of many Earth orbiting instruments. A ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0e2221f381edf89037ff8ba9e44d1f26
http://europepmc.org/articles/PMC4553864
http://europepmc.org/articles/PMC4553864
Autor:
Patrick Minnis, Johannes Schmetz, David C. Tobin, Xiangqian Wu, J. Lafeuille, D. Renaut, Tong Zhu, James J. Butler, Tim J. Hewison, Peiqun Zhang, B. Iacovazzi, Mitch Goldberg, Fuzhong Weng, David R. Doelling, George Ohring, Raju V. Datla, Changyong Cao, Likun Wang, D. Kim, T. Kurino, V. Gärtner, Fangfang Yu
Publikováno v:
Bulletin of the American Meteorological Society. 92:467-475
The Global Space-based Inter-Calibration System (GSICS) is a new international program to assure the comparability of satellite measurements taken at different times and locations by different instruments operated by different satellite agencies. Spo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e53e5963c1400c7c30c346adb18adae
https://doi.org/10.1175/2010bams2967.1
https://doi.org/10.1175/2010bams2967.1
Autor:
Catherine C. Cooksey, Raju V. Datla
Publikováno v:
Journal of Research of the National Institute of Standards and Technology
Detecting the small signals of climate change for the most essential climate variables requires that satellite sensors make highly accurate and consistent measurements. Data gaps in the time series (such as gaps resulting from launch delay or failure
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aa4c622fdbbfdd67f5d5a0d7f2564ca0
http://europepmc.org/articles/PMC4551275
http://europepmc.org/articles/PMC4551275
Publikováno v:
International Journal of Remote Sensing. 31:867-880
Climate change monitoring requires decades-long time-series radiometric measurements using multiple optical sensors in multiple platforms covering the globe. The problem of achieving traceability to SI units for these measurements is discussed. A maj
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::307f436c6a6ded87e56325939fd83956
https://doi.org/10.1080/01431160902897882
https://doi.org/10.1080/01431160902897882
Publikováno v:
Journal of Research of the National Institute of Standards and Technology
The Low Background Infrared calibration (LBIR) facility at the National Institute of Standards and Technology (NIST) presently maintains four absolute cryogenic radiometers (ACRs) which serve as standard reference detectors for infrared calibrations
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6cd006e296f57f9f84b97cf76234ae40
http://europepmc.org/articles/PMC4659455
http://europepmc.org/articles/PMC4659455
Publikováno v:
Metrologia. 43:S41-S45
The Low Background Infrared calibration facility at the National Institute of Standards and Technology (NIST) is developing an instrument to measure the relative areas of apertures with diameters ranging from 5 mm to 0.05 mm. NIST already has the cap
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4b2cfa10e3e0c14ed435f9b1b492c71a
https://doi.org/10.1088/0026-1394/43/2/s09
https://doi.org/10.1088/0026-1394/43/2/s09
Publikováno v:
Bulletin of the American Meteorological Society. 86:1303-1314
Measuring the small changes associated with long-term global climate change from space is a daunting task. The satellite instruments must be capable of observing atmospheric and surface temperature trends as small as 0.1°C decade−1, ozone changes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::594a1f1d1c0c03d9095d47764d516bbf
https://doi.org/10.1175/bams-86-9-1303
https://doi.org/10.1175/bams-86-9-1303
Publikováno v:
Metrologia. 40:S1-S4
The low-background infrared (LBIR) facility at the National Institute of Standards and Technology (NIST) has continued to develop its facilities and knowledge base to meet the needs of the infrared community. Improvements in refrigeration capability
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d1ebcb260326f446eb20d2778c9be88b
https://doi.org/10.1088/0026-1394/40/1/301
https://doi.org/10.1088/0026-1394/40/1/301
Publikováno v:
Metrologia. 39:279-293
We address the problem of determining the combined result and its associated uncertainty in the measurement of a common measurand by a group of competent laboratories. Most data analyses of interlaboratory evaluations are based on the assumption that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::993b2d1906b2fd5854468bdbb5325e10
https://doi.org/10.1088/0026-1394/39/3/5
https://doi.org/10.1088/0026-1394/39/3/5
Autor:
Albert C. Parr, Raju V. Datla
Publikováno v:
Advances in Space Research. 28:59-68
The Optical Technology Division (OTD) at the National Institute of Standards and Technology (NIST) has been actively involved in providing calibration support to establish SI traceable measurement support for the National Aeronautic and Space Adminis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::75cd0bd94c4e93d2234f34189ca3bbf4
https://doi.org/10.1016/s0273-1177(01)00285-x
https://doi.org/10.1016/s0273-1177(01)00285-x