Study of the Effect of Temporal Sampling Frequency on DSCOVR Observations Using the GEOS-5 Nature Run Results (Part I): Earth’s Radiation Budget
Satellites always sample the Earth-atmosphere system in a finite temporal resolution. This study investigates the effect of sampling frequency on the satellite-derived Earth radiation budget, with the Deep Space Climate Observatory (DSCOVR) as an example. The output from NASA’s Goddard Earth Observi...
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ftmdpi:oai:mdpi.com:/2072-4292/8/2/98/ 2023-08-20T04:04:44+02:00 Study of the Effect of Temporal Sampling Frequency on DSCOVR Observations Using the GEOS-5 Nature Run Results (Part I): Earth’s Radiation Budget Daniel Holdaway Yuekui Yang agris 2016-01-27 application/pdf https://doi.org/10.3390/rs8020098 EN eng Multidisciplinary Digital Publishing Institute https://dx.doi.org/10.3390/rs8020098 https://creativecommons.org/licenses/by/4.0/ Remote Sensing; Volume 8; Issue 2; Pages: 98 radiation budget satellite sampling frequency DSCOVR EPIC time series Arctic climate change GEOS-5 Nature Run Text 2016 ftmdpi https://doi.org/10.3390/rs8020098 2023-07-31T20:49:56Z Satellites always sample the Earth-atmosphere system in a finite temporal resolution. This study investigates the effect of sampling frequency on the satellite-derived Earth radiation budget, with the Deep Space Climate Observatory (DSCOVR) as an example. The output from NASA’s Goddard Earth Observing System Version 5 (GEOS-5) Nature Run is used as the truth. The Nature Run is a high spatial and temporal resolution atmospheric simulation spanning a two-year period. The effect of temporal resolution on potential DSCOVR observations is assessed by sampling the full Nature Run data with 1-h to 24-h frequencies. The uncertainty associated with a given sampling frequency is measured by computing means over daily, monthly, seasonal and annual intervals and determining the spread across different possible starting points. The skill with which a particular sampling frequency captures the structure of the full time series is measured using correlations and normalized errors. Results show that higher sampling frequency gives more information and less uncertainty in the derived radiation budget. A sampling frequency coarser than every 4 h results in significant error. Correlations between true and sampled time series also decrease more rapidly for a sampling frequency less than 4 h. Text Arctic Climate change MDPI Open Access Publishing Arctic Remote Sensing 8 2 98 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
radiation budget satellite sampling frequency DSCOVR EPIC time series Arctic climate change GEOS-5 Nature Run |
spellingShingle |
radiation budget satellite sampling frequency DSCOVR EPIC time series Arctic climate change GEOS-5 Nature Run Daniel Holdaway Yuekui Yang Study of the Effect of Temporal Sampling Frequency on DSCOVR Observations Using the GEOS-5 Nature Run Results (Part I): Earth’s Radiation Budget |
topic_facet |
radiation budget satellite sampling frequency DSCOVR EPIC time series Arctic climate change GEOS-5 Nature Run |
description |
Satellites always sample the Earth-atmosphere system in a finite temporal resolution. This study investigates the effect of sampling frequency on the satellite-derived Earth radiation budget, with the Deep Space Climate Observatory (DSCOVR) as an example. The output from NASA’s Goddard Earth Observing System Version 5 (GEOS-5) Nature Run is used as the truth. The Nature Run is a high spatial and temporal resolution atmospheric simulation spanning a two-year period. The effect of temporal resolution on potential DSCOVR observations is assessed by sampling the full Nature Run data with 1-h to 24-h frequencies. The uncertainty associated with a given sampling frequency is measured by computing means over daily, monthly, seasonal and annual intervals and determining the spread across different possible starting points. The skill with which a particular sampling frequency captures the structure of the full time series is measured using correlations and normalized errors. Results show that higher sampling frequency gives more information and less uncertainty in the derived radiation budget. A sampling frequency coarser than every 4 h results in significant error. Correlations between true and sampled time series also decrease more rapidly for a sampling frequency less than 4 h. |
format |
Text |
author |
Daniel Holdaway Yuekui Yang |
author_facet |
Daniel Holdaway Yuekui Yang |
author_sort |
Daniel Holdaway |
title |
Study of the Effect of Temporal Sampling Frequency on DSCOVR Observations Using the GEOS-5 Nature Run Results (Part I): Earth’s Radiation Budget |
title_short |
Study of the Effect of Temporal Sampling Frequency on DSCOVR Observations Using the GEOS-5 Nature Run Results (Part I): Earth’s Radiation Budget |
title_full |
Study of the Effect of Temporal Sampling Frequency on DSCOVR Observations Using the GEOS-5 Nature Run Results (Part I): Earth’s Radiation Budget |
title_fullStr |
Study of the Effect of Temporal Sampling Frequency on DSCOVR Observations Using the GEOS-5 Nature Run Results (Part I): Earth’s Radiation Budget |
title_full_unstemmed |
Study of the Effect of Temporal Sampling Frequency on DSCOVR Observations Using the GEOS-5 Nature Run Results (Part I): Earth’s Radiation Budget |
title_sort |
study of the effect of temporal sampling frequency on dscovr observations using the geos-5 nature run results (part i): earth’s radiation budget |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2016 |
url |
https://doi.org/10.3390/rs8020098 |
op_coverage |
agris |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change |
genre_facet |
Arctic Climate change |
op_source |
Remote Sensing; Volume 8; Issue 2; Pages: 98 |
op_relation |
https://dx.doi.org/10.3390/rs8020098 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/rs8020098 |
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Remote Sensing |
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8 |
container_issue |
2 |
container_start_page |
98 |
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1774715105910456320 |