Dynamics of photosynthetic photon flux density (PPFD) and estimates in coastal northern California
Plants require solar radiation for photosynthesis and their growth is directly related to the amount received, assuming that other environmental parameters are not limiting. Therefore, precise estimation of photosynthetically active radiation (PAR) is necessary to enhance overall accuracies of plant...
Gespeichert in:
| Veröffentlicht in: | Theoretical and applied climatology 2011-08, Vol.105 (1-2), p.107-118 |
|---|---|
| Hauptverfasser: | , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 118 |
|---|---|
| container_issue | 1-2 |
| container_start_page | 107 |
| container_title | Theoretical and applied climatology |
| container_volume | 105 |
| creator | Ge, Shaokui Smith, Richard G. Jacovides, Constantinos P. Kramer, Marc G. Carruthers, Raymond I. |
| description | Plants require solar radiation for photosynthesis and their growth is directly related to the amount received, assuming that other environmental parameters are not limiting. Therefore, precise estimation of photosynthetically active radiation (PAR) is necessary to enhance overall accuracies of plant growth models. This study aimed to explore the PAR radiant flux in the San Francisco Bay Area of northern California. During the growing season (March through August) for 2 years 2007–2008, the on-site magnitudes of photosynthetic photon flux densities (PPFD) were investigated and then processed at both the hourly and daily time scales. Combined with global solar radiation (
R
S
) and simulated extraterrestrial solar radiation, five PAR-related values were developed, i.e., flux density-based PAR (PPFD), energy-based PAR (PARE), from-flux-to-energy conversion efficiency (fFEC), and the fraction of PAR energy in the global solar radiation (fE), and a new developed indicator—lost PARE percentages (LPR)—when solar radiation penetrates from the extraterrestrial system to the ground. These PAR-related values indicated significant diurnal variation, high values occurring at midday, with the low values occurring in the morning and afternoon hours. During the entire experimental season, the overall mean hourly value of fFEC was found to be 2.17 μmol J
−1
, while the respective fE value was 0.49. The monthly averages of hourly fFEC and fE at the solar noon time ranged from 2.15 in March to 2.39 μmol J
−1
in August and from 0.47 in March to 0.52 in July, respectively. However, the monthly average daily values were relatively constant, and they exhibited a weak seasonal variation, ranging from 2.02 mol MJ
−1
and 0.45 (March) to 2.19 mol MJ
−1
and 0.48 (June). The mean daily values of fFEC and fE at the solar noon were 2.16 mol MJ
−1
and 0.47 across the entire growing season, respectively. Both PPFD and the ever first reported LPR showed strong diurnal patterns. However, they had opposite trends. PPFD was high around noon, resulting in low values of LPR during the same time period. Both were found to be highly correlated with global solar radiation
R
S
, solar elevation angle
h
, and the clearness index
K
t
. Using the best subset selection of variables, two parametric models were developed for estimating PPFD and LPR, which can easily be applied in radiometric sites, by recording only global solar radiation measurements. These two models were found to be involved with the |
| doi_str_mv | 10.1007/s00704-010-0368-6 |
| format | Article |
| fullrecord | <record><control><sourceid>gale_proqu</sourceid><recordid>TN_cdi_proquest_miscellaneous_883041250</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><galeid>A355939167</galeid><sourcerecordid>A355939167</sourcerecordid><originalsourceid>FETCH-LOGICAL-c559t-7d75028d4626d2c5d5fd1f6791d3a5b6437df92f837efc76b4ff892a2f911c7a3</originalsourceid><addsrcrecordid>eNp1kV1rFDEUhgdRcK3-AO-CILYXU_M1SeaybK0WChY_wLuQzcc2ZTZZczLQ_femTlEqSCDhJM97eHPerntN8CnBWL6HtmHeY4J7zITqxZNuRTjjPeeKPe1WmEjZy1H9eN69ALjFGFMh5KrbnB-S2UULKAe0v8k1wyHVG1-jXcqEwjTfIecTxHpAx9fXF-cnyCSHPNS4M9UDignZbKCaCaVcmroktDZTDLmkaF52z4KZwL96OI-67xcfvq0_9VefP16uz656Owxj7aWTA6bKcUGFo3ZwQ3AkCDkSx8ywEZxJF0YaFJM-WCk2PAQ1UkPDSIiVhh1175a--5J_zs2d3kWwfppM8nkGrRTDnNABN_LNP-Rtnktq5rSSSqiBCdmg0wXamsnrmEKuxdi2nG_zysmH2O7PWDPPRvJbcPJI0Jjq7-rWzAD68uuXxyxZWFsyQPFB70sbZjlogvV9oHoJVLdA9X2gWjTN2wfXBqyZQjHJRvgjpJxjTARtHF04aE9p68vf3_2_-S-7pq7X</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>878685367</pqid></control><display><type>article</type><title>Dynamics of photosynthetic photon flux density (PPFD) and estimates in coastal northern California</title><source>SpringerNature Journals</source><creator>Ge, Shaokui ; Smith, Richard G. ; Jacovides, Constantinos P. ; Kramer, Marc G. ; Carruthers, Raymond I.</creator><creatorcontrib>Ge, Shaokui ; Smith, Richard G. ; Jacovides, Constantinos P. ; Kramer, Marc G. ; Carruthers, Raymond I.</creatorcontrib><description>Plants require solar radiation for photosynthesis and their growth is directly related to the amount received, assuming that other environmental parameters are not limiting. Therefore, precise estimation of photosynthetically active radiation (PAR) is necessary to enhance overall accuracies of plant growth models. This study aimed to explore the PAR radiant flux in the San Francisco Bay Area of northern California. During the growing season (March through August) for 2 years 2007–2008, the on-site magnitudes of photosynthetic photon flux densities (PPFD) were investigated and then processed at both the hourly and daily time scales. Combined with global solar radiation (
R
S
) and simulated extraterrestrial solar radiation, five PAR-related values were developed, i.e., flux density-based PAR (PPFD), energy-based PAR (PARE), from-flux-to-energy conversion efficiency (fFEC), and the fraction of PAR energy in the global solar radiation (fE), and a new developed indicator—lost PARE percentages (LPR)—when solar radiation penetrates from the extraterrestrial system to the ground. These PAR-related values indicated significant diurnal variation, high values occurring at midday, with the low values occurring in the morning and afternoon hours. During the entire experimental season, the overall mean hourly value of fFEC was found to be 2.17 μmol J
−1
, while the respective fE value was 0.49. The monthly averages of hourly fFEC and fE at the solar noon time ranged from 2.15 in March to 2.39 μmol J
−1
in August and from 0.47 in March to 0.52 in July, respectively. However, the monthly average daily values were relatively constant, and they exhibited a weak seasonal variation, ranging from 2.02 mol MJ
−1
and 0.45 (March) to 2.19 mol MJ
−1
and 0.48 (June). The mean daily values of fFEC and fE at the solar noon were 2.16 mol MJ
−1
and 0.47 across the entire growing season, respectively. Both PPFD and the ever first reported LPR showed strong diurnal patterns. However, they had opposite trends. PPFD was high around noon, resulting in low values of LPR during the same time period. Both were found to be highly correlated with global solar radiation
R
S
, solar elevation angle
h
, and the clearness index
K
t
. Using the best subset selection of variables, two parametric models were developed for estimating PPFD and LPR, which can easily be applied in radiometric sites, by recording only global solar radiation measurements. These two models were found to be involved with the most commonly measured global solar radiation (
R
S
) and two large-scale geometric parameters, i.e., extraterrestrial solar radiation and solar elevation. The models were therefore insensitive to local weather conditions such as temperature. In particular, with two test data sets collected in USA and Greece, it was verified that the models could be extended across different geographical areas, where they performed well. Therefore, these two hourly based models can be used to provide precise PAR-related values, such as those required for developing precise vegetation growth models.</description><identifier>ISSN: 0177-798X</identifier><identifier>EISSN: 1434-4483</identifier><identifier>DOI: 10.1007/s00704-010-0368-6</identifier><language>eng</language><publisher>Vienna: Springer Vienna</publisher><subject>Aquatic Pollution ; Atmospheric Protection/Air Quality Control/Air Pollution ; Atmospheric Sciences ; Climatology ; Coasts ; Diurnal variations ; Earth and Environmental Science ; Earth Sciences ; Earth, ocean, space ; Elevation ; Energy conversion ; Exact sciences and technology ; External geophysics ; Fluctuations ; Growing season ; Meteorology ; Nuclear radiation ; Original Paper ; Photosynthesis ; Phytochemistry ; Plant growth ; Radiation measurement ; Seasonal variations ; Solar energy ; Solar radiation ; Ultraviolet radiation ; Waste Water Technology ; Water Management ; Water Pollution Control</subject><ispartof>Theoretical and applied climatology, 2011-08, Vol.105 (1-2), p.107-118</ispartof><rights>The Author(s) 2010</rights><rights>2015 INIST-CNRS</rights><rights>COPYRIGHT 2011 Springer</rights><rights>Springer-Verlag 2011</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c559t-7d75028d4626d2c5d5fd1f6791d3a5b6437df92f837efc76b4ff892a2f911c7a3</citedby><cites>FETCH-LOGICAL-c559t-7d75028d4626d2c5d5fd1f6791d3a5b6437df92f837efc76b4ff892a2f911c7a3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s00704-010-0368-6$$EPDF$$P50$$Gspringer$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s00704-010-0368-6$$EHTML$$P50$$Gspringer$$Hfree_for_read</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=24400162$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Ge, Shaokui</creatorcontrib><creatorcontrib>Smith, Richard G.</creatorcontrib><creatorcontrib>Jacovides, Constantinos P.</creatorcontrib><creatorcontrib>Kramer, Marc G.</creatorcontrib><creatorcontrib>Carruthers, Raymond I.</creatorcontrib><title>Dynamics of photosynthetic photon flux density (PPFD) and estimates in coastal northern California</title><title>Theoretical and applied climatology</title><addtitle>Theor Appl Climatol</addtitle><description>Plants require solar radiation for photosynthesis and their growth is directly related to the amount received, assuming that other environmental parameters are not limiting. Therefore, precise estimation of photosynthetically active radiation (PAR) is necessary to enhance overall accuracies of plant growth models. This study aimed to explore the PAR radiant flux in the San Francisco Bay Area of northern California. During the growing season (March through August) for 2 years 2007–2008, the on-site magnitudes of photosynthetic photon flux densities (PPFD) were investigated and then processed at both the hourly and daily time scales. Combined with global solar radiation (
R
S
) and simulated extraterrestrial solar radiation, five PAR-related values were developed, i.e., flux density-based PAR (PPFD), energy-based PAR (PARE), from-flux-to-energy conversion efficiency (fFEC), and the fraction of PAR energy in the global solar radiation (fE), and a new developed indicator—lost PARE percentages (LPR)—when solar radiation penetrates from the extraterrestrial system to the ground. These PAR-related values indicated significant diurnal variation, high values occurring at midday, with the low values occurring in the morning and afternoon hours. During the entire experimental season, the overall mean hourly value of fFEC was found to be 2.17 μmol J
−1
, while the respective fE value was 0.49. The monthly averages of hourly fFEC and fE at the solar noon time ranged from 2.15 in March to 2.39 μmol J
−1
in August and from 0.47 in March to 0.52 in July, respectively. However, the monthly average daily values were relatively constant, and they exhibited a weak seasonal variation, ranging from 2.02 mol MJ
−1
and 0.45 (March) to 2.19 mol MJ
−1
and 0.48 (June). The mean daily values of fFEC and fE at the solar noon were 2.16 mol MJ
−1
and 0.47 across the entire growing season, respectively. Both PPFD and the ever first reported LPR showed strong diurnal patterns. However, they had opposite trends. PPFD was high around noon, resulting in low values of LPR during the same time period. Both were found to be highly correlated with global solar radiation
R
S
, solar elevation angle
h
, and the clearness index
K
t
. Using the best subset selection of variables, two parametric models were developed for estimating PPFD and LPR, which can easily be applied in radiometric sites, by recording only global solar radiation measurements. These two models were found to be involved with the most commonly measured global solar radiation (
R
S
) and two large-scale geometric parameters, i.e., extraterrestrial solar radiation and solar elevation. The models were therefore insensitive to local weather conditions such as temperature. In particular, with two test data sets collected in USA and Greece, it was verified that the models could be extended across different geographical areas, where they performed well. Therefore, these two hourly based models can be used to provide precise PAR-related values, such as those required for developing precise vegetation growth models.</description><subject>Aquatic Pollution</subject><subject>Atmospheric Protection/Air Quality Control/Air Pollution</subject><subject>Atmospheric Sciences</subject><subject>Climatology</subject><subject>Coasts</subject><subject>Diurnal variations</subject><subject>Earth and Environmental Science</subject><subject>Earth Sciences</subject><subject>Earth, ocean, space</subject><subject>Elevation</subject><subject>Energy conversion</subject><subject>Exact sciences and technology</subject><subject>External geophysics</subject><subject>Fluctuations</subject><subject>Growing season</subject><subject>Meteorology</subject><subject>Nuclear radiation</subject><subject>Original Paper</subject><subject>Photosynthesis</subject><subject>Phytochemistry</subject><subject>Plant growth</subject><subject>Radiation measurement</subject><subject>Seasonal variations</subject><subject>Solar energy</subject><subject>Solar radiation</subject><subject>Ultraviolet radiation</subject><subject>Waste Water Technology</subject><subject>Water Management</subject><subject>Water Pollution Control</subject><issn>0177-798X</issn><issn>1434-4483</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><sourceid>C6C</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNp1kV1rFDEUhgdRcK3-AO-CILYXU_M1SeaybK0WChY_wLuQzcc2ZTZZczLQ_femTlEqSCDhJM97eHPerntN8CnBWL6HtmHeY4J7zITqxZNuRTjjPeeKPe1WmEjZy1H9eN69ALjFGFMh5KrbnB-S2UULKAe0v8k1wyHVG1-jXcqEwjTfIecTxHpAx9fXF-cnyCSHPNS4M9UDignZbKCaCaVcmroktDZTDLmkaF52z4KZwL96OI-67xcfvq0_9VefP16uz656Owxj7aWTA6bKcUGFo3ZwQ3AkCDkSx8ywEZxJF0YaFJM-WCk2PAQ1UkPDSIiVhh1175a--5J_zs2d3kWwfppM8nkGrRTDnNABN_LNP-Rtnktq5rSSSqiBCdmg0wXamsnrmEKuxdi2nG_zysmH2O7PWDPPRvJbcPJI0Jjq7-rWzAD68uuXxyxZWFsyQPFB70sbZjlogvV9oHoJVLdA9X2gWjTN2wfXBqyZQjHJRvgjpJxjTARtHF04aE9p68vf3_2_-S-7pq7X</recordid><startdate>20110801</startdate><enddate>20110801</enddate><creator>Ge, Shaokui</creator><creator>Smith, Richard G.</creator><creator>Jacovides, Constantinos P.</creator><creator>Kramer, Marc G.</creator><creator>Carruthers, Raymond I.</creator><general>Springer Vienna</general><general>Springer</general><general>Springer Nature B.V</general><scope>C6C</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>ISR</scope><scope>3V.</scope><scope>7QH</scope><scope>7TG</scope><scope>7TN</scope><scope>7UA</scope><scope>7XB</scope><scope>88I</scope><scope>8FE</scope><scope>8FG</scope><scope>8FK</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>F1W</scope><scope>GNUQQ</scope><scope>H96</scope><scope>HCIFZ</scope><scope>KL.</scope><scope>L.G</scope><scope>L6V</scope><scope>M2P</scope><scope>M7S</scope><scope>P5Z</scope><scope>P62</scope><scope>PCBAR</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PTHSS</scope><scope>Q9U</scope></search><sort><creationdate>20110801</creationdate><title>Dynamics of photosynthetic photon flux density (PPFD) and estimates in coastal northern California</title><author>Ge, Shaokui ; Smith, Richard G. ; Jacovides, Constantinos P. ; Kramer, Marc G. ; Carruthers, Raymond I.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c559t-7d75028d4626d2c5d5fd1f6791d3a5b6437df92f837efc76b4ff892a2f911c7a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Aquatic Pollution</topic><topic>Atmospheric Protection/Air Quality Control/Air Pollution</topic><topic>Atmospheric Sciences</topic><topic>Climatology</topic><topic>Coasts</topic><topic>Diurnal variations</topic><topic>Earth and Environmental Science</topic><topic>Earth Sciences</topic><topic>Earth, ocean, space</topic><topic>Elevation</topic><topic>Energy conversion</topic><topic>Exact sciences and technology</topic><topic>External geophysics</topic><topic>Fluctuations</topic><topic>Growing season</topic><topic>Meteorology</topic><topic>Nuclear radiation</topic><topic>Original Paper</topic><topic>Photosynthesis</topic><topic>Phytochemistry</topic><topic>Plant growth</topic><topic>Radiation measurement</topic><topic>Seasonal variations</topic><topic>Solar energy</topic><topic>Solar radiation</topic><topic>Ultraviolet radiation</topic><topic>Waste Water Technology</topic><topic>Water Management</topic><topic>Water Pollution Control</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ge, Shaokui</creatorcontrib><creatorcontrib>Smith, Richard G.</creatorcontrib><creatorcontrib>Jacovides, Constantinos P.</creatorcontrib><creatorcontrib>Kramer, Marc G.</creatorcontrib><creatorcontrib>Carruthers, Raymond I.</creatorcontrib><collection>Springer Nature OA Free Journals</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Gale In Context: Science</collection><collection>ProQuest Central (Corporate)</collection><collection>Aqualine</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Oceanic Abstracts</collection><collection>Water Resources Abstracts</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Science Database (Alumni Edition)</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>Advanced Technologies & Aerospace Collection</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>Natural Science Collection</collection><collection>Earth, Atmospheric & Aquatic Science Collection</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>ProQuest Central Student</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>SciTech Premium Collection</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>ProQuest Engineering Collection</collection><collection>Science Database</collection><collection>Engineering Database</collection><collection>Advanced Technologies & Aerospace Database</collection><collection>ProQuest Advanced Technologies & Aerospace Collection</collection><collection>Earth, Atmospheric & Aquatic Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Engineering Collection</collection><collection>ProQuest Central Basic</collection><jtitle>Theoretical and applied climatology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ge, Shaokui</au><au>Smith, Richard G.</au><au>Jacovides, Constantinos P.</au><au>Kramer, Marc G.</au><au>Carruthers, Raymond I.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Dynamics of photosynthetic photon flux density (PPFD) and estimates in coastal northern California</atitle><jtitle>Theoretical and applied climatology</jtitle><stitle>Theor Appl Climatol</stitle><date>2011-08-01</date><risdate>2011</risdate><volume>105</volume><issue>1-2</issue><spage>107</spage><epage>118</epage><pages>107-118</pages><issn>0177-798X</issn><eissn>1434-4483</eissn><abstract>Plants require solar radiation for photosynthesis and their growth is directly related to the amount received, assuming that other environmental parameters are not limiting. Therefore, precise estimation of photosynthetically active radiation (PAR) is necessary to enhance overall accuracies of plant growth models. This study aimed to explore the PAR radiant flux in the San Francisco Bay Area of northern California. During the growing season (March through August) for 2 years 2007–2008, the on-site magnitudes of photosynthetic photon flux densities (PPFD) were investigated and then processed at both the hourly and daily time scales. Combined with global solar radiation (
R
S
) and simulated extraterrestrial solar radiation, five PAR-related values were developed, i.e., flux density-based PAR (PPFD), energy-based PAR (PARE), from-flux-to-energy conversion efficiency (fFEC), and the fraction of PAR energy in the global solar radiation (fE), and a new developed indicator—lost PARE percentages (LPR)—when solar radiation penetrates from the extraterrestrial system to the ground. These PAR-related values indicated significant diurnal variation, high values occurring at midday, with the low values occurring in the morning and afternoon hours. During the entire experimental season, the overall mean hourly value of fFEC was found to be 2.17 μmol J
−1
, while the respective fE value was 0.49. The monthly averages of hourly fFEC and fE at the solar noon time ranged from 2.15 in March to 2.39 μmol J
−1
in August and from 0.47 in March to 0.52 in July, respectively. However, the monthly average daily values were relatively constant, and they exhibited a weak seasonal variation, ranging from 2.02 mol MJ
−1
and 0.45 (March) to 2.19 mol MJ
−1
and 0.48 (June). The mean daily values of fFEC and fE at the solar noon were 2.16 mol MJ
−1
and 0.47 across the entire growing season, respectively. Both PPFD and the ever first reported LPR showed strong diurnal patterns. However, they had opposite trends. PPFD was high around noon, resulting in low values of LPR during the same time period. Both were found to be highly correlated with global solar radiation
R
S
, solar elevation angle
h
, and the clearness index
K
t
. Using the best subset selection of variables, two parametric models were developed for estimating PPFD and LPR, which can easily be applied in radiometric sites, by recording only global solar radiation measurements. These two models were found to be involved with the most commonly measured global solar radiation (
R
S
) and two large-scale geometric parameters, i.e., extraterrestrial solar radiation and solar elevation. The models were therefore insensitive to local weather conditions such as temperature. In particular, with two test data sets collected in USA and Greece, it was verified that the models could be extended across different geographical areas, where they performed well. Therefore, these two hourly based models can be used to provide precise PAR-related values, such as those required for developing precise vegetation growth models.</abstract><cop>Vienna</cop><pub>Springer Vienna</pub><doi>10.1007/s00704-010-0368-6</doi><tpages>12</tpages><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0177-798X |
| ispartof | Theoretical and applied climatology, 2011-08, Vol.105 (1-2), p.107-118 |
| issn | 0177-798X 1434-4483 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_883041250 |
| source | SpringerNature Journals |
| subjects | Aquatic Pollution Atmospheric Protection/Air Quality Control/Air Pollution Atmospheric Sciences Climatology Coasts Diurnal variations Earth and Environmental Science Earth Sciences Earth, ocean, space Elevation Energy conversion Exact sciences and technology External geophysics Fluctuations Growing season Meteorology Nuclear radiation Original Paper Photosynthesis Phytochemistry Plant growth Radiation measurement Seasonal variations Solar energy Solar radiation Ultraviolet radiation Waste Water Technology Water Management Water Pollution Control |
| title | Dynamics of photosynthetic photon flux density (PPFD) and estimates in coastal northern California |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-25T16%3A05%3A32IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-gale_proqu&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Dynamics%20of%20photosynthetic%20photon%20flux%20density%20(PPFD)%20and%20estimates%20in%20coastal%20northern%20California&rft.jtitle=Theoretical%20and%20applied%20climatology&rft.au=Ge,%20Shaokui&rft.date=2011-08-01&rft.volume=105&rft.issue=1-2&rft.spage=107&rft.epage=118&rft.pages=107-118&rft.issn=0177-798X&rft.eissn=1434-4483&rft_id=info:doi/10.1007/s00704-010-0368-6&rft_dat=%3Cgale_proqu%3EA355939167%3C/gale_proqu%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=878685367&rft_id=info:pmid/&rft_galeid=A355939167&rfr_iscdi=true |