Top-of-atmosphere radiative cooling with white roofs: experimental verification and model-based evaluation
We evaluate differences in clear-sky upwelling shortwave radiation reaching the top of the atmosphere in response to increasing the albedo of roof surfaces in an area of India with moderately high aerosol loading. Treated (painted white) and untreated (unpainted) roofs on two buildings in northeast...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2012-01-01
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| Series: | Environmental Research Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1748-9326/7/4/044007 |
| _version_ | 1797748558256930816 |
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| author | Francisco Salamanca Shaheen Tonse Surabi Menon Vishal Garg Krishna P Singh Manish Naja Marc L Fischer |
| author_facet | Francisco Salamanca Shaheen Tonse Surabi Menon Vishal Garg Krishna P Singh Manish Naja Marc L Fischer |
| author_sort | Francisco Salamanca |
| collection | DOAJ |
| description | We evaluate differences in clear-sky upwelling shortwave radiation reaching the top of the atmosphere in response to increasing the albedo of roof surfaces in an area of India with moderately high aerosol loading. Treated (painted white) and untreated (unpainted) roofs on two buildings in northeast India were analyzed on five cloudless days using radiometric imagery from the IKONOS satellite. Comparison of a radiative transfer model (RRTMG) and radiometric satellite observations shows good agreement ( R ^2 = 0.927). Results show a mean increase of ∼50 W m ^−2 outgoing at the top of the atmosphere for each 0.1 increase of the albedo at the time of the observations and a strong dependence on atmospheric transmissivity. |
| first_indexed | 2024-03-12T16:06:32Z |
| format | Article |
| id | doaj.art-64dc91f74ddd45da8cb57735c0b5b406 |
| institution | Directory Open Access Journal |
| issn | 1748-9326 |
| language | English |
| last_indexed | 2024-03-12T16:06:32Z |
| publishDate | 2012-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Environmental Research Letters |
| spelling | doaj.art-64dc91f74ddd45da8cb57735c0b5b4062023-08-09T14:19:44ZengIOP PublishingEnvironmental Research Letters1748-93262012-01-017404400710.1088/1748-9326/7/4/044007Top-of-atmosphere radiative cooling with white roofs: experimental verification and model-based evaluationFrancisco Salamanca0Shaheen Tonse1Surabi Menon2Vishal Garg3Krishna P Singh4Manish Naja5Marc L Fischer6Lawrence Berkeley National Laboratory , CA, USATST Scientific Consulting , CA, USALawrence Berkeley National Laboratory , CA, USA; ClimateWorks Foundation , CA, USAIIIT Hyderabad , IndiaBiophysics Unit, GB Pant University of Agriculture and Technology , Pantnagar, Uttarakhand, IndiaAryabhatta Research Institute of Observational Sciences (ARIES) , Nainital, IndiaLawrence Berkeley National Laboratory , CA, USAWe evaluate differences in clear-sky upwelling shortwave radiation reaching the top of the atmosphere in response to increasing the albedo of roof surfaces in an area of India with moderately high aerosol loading. Treated (painted white) and untreated (unpainted) roofs on two buildings in northeast India were analyzed on five cloudless days using radiometric imagery from the IKONOS satellite. Comparison of a radiative transfer model (RRTMG) and radiometric satellite observations shows good agreement ( R ^2 = 0.927). Results show a mean increase of ∼50 W m ^−2 outgoing at the top of the atmosphere for each 0.1 increase of the albedo at the time of the observations and a strong dependence on atmospheric transmissivity.https://doi.org/10.1088/1748-9326/7/4/044007aerosol loadingcool roofradiation balancesatellite radiometrysurface reflectanceurban systems |
| spellingShingle | Francisco Salamanca Shaheen Tonse Surabi Menon Vishal Garg Krishna P Singh Manish Naja Marc L Fischer Top-of-atmosphere radiative cooling with white roofs: experimental verification and model-based evaluation Environmental Research Letters aerosol loading cool roof radiation balance satellite radiometry surface reflectance urban systems |
| title | Top-of-atmosphere radiative cooling with white roofs: experimental verification and model-based evaluation |
| title_full | Top-of-atmosphere radiative cooling with white roofs: experimental verification and model-based evaluation |
| title_fullStr | Top-of-atmosphere radiative cooling with white roofs: experimental verification and model-based evaluation |
| title_full_unstemmed | Top-of-atmosphere radiative cooling with white roofs: experimental verification and model-based evaluation |
| title_short | Top-of-atmosphere radiative cooling with white roofs: experimental verification and model-based evaluation |
| title_sort | top of atmosphere radiative cooling with white roofs experimental verification and model based evaluation |
| topic | aerosol loading cool roof radiation balance satellite radiometry surface reflectance urban systems |
| url | https://doi.org/10.1088/1748-9326/7/4/044007 |
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