| 1. Identity statement | |
| Reference Type | Conference Paper (Conference Proceedings) |
| Site | mtc-m12.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identifier | 6qtX3pFwXQZ3r59YD6/GP3DK |
| Repository | sid.inpe.br/iris@1912/2005/07.19.23.51 |
| Last Update | 2015:09.08.19.43.18 (UTC) marciana |
| Metadata Repository | sid.inpe.br/iris@1912/2005/07.19.23.51.30 |
| Metadata Last Update | 2024:11.07.13.19.51 (UTC) marciana |
| Secondary Key | INPE-7648-PRE/3498 |
| ISBN | 0780301382 |
| Label | 7048 |
| Citation Key | SoaresShiVanzEngm:1992:EsBaSo |
| Title | Estimation of bare soil evaporation using multifrequency airborne SAR  |
| Year | 1992 |
| Secondary Date | 19950809 |
| Access Date | 2024, Dec. 11 |
| Secondary Type | PRE CI |
| Number of Files | 1 |
| Size | 351 KiB |
| 2. Context | |
| Author | 1 Soares, Joao Vianei 2 Shi, Jiancheng 3 Vanzyl, Jakob 4 Engman, E. T |
| Group | 1 DSR-INPE-MCT-BR |
| Affiliation | 1 2 Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA, United States 3 Goddard Space Flight Center, Code 974, Greenbelt, MD, United States |
| Editor | Williamson, R. Stein, T. |
| Conference Name | International Geoscience and Remote Sensing Symposium, (IGARSS'92). |
| Conference Location | Houston, USA |
| Date | 26-29 May 1992 |
| Publisher | IEEE |
| Pages | 1747-1749 |
| Book Title | Proceedings |
| History (UTC) | 2008-06-09 20:08:35 :: administrator -> jefferson :: 2010-07-07 18:50:26 :: jefferson -> administrator :: 2015-05-21 17:13:47 :: administrator -> marciana :: 1992 2015-09-08 19:43:18 :: marciana -> administrator :: 1992 2016-06-04 23:29:21 :: administrator -> marciana :: 1992 2016-09-13 15:54:29 :: marciana -> administrator :: 1992 2018-06-05 00:52:28 :: administrator -> marciana :: 1992 |
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | completed |
| Transferable | 1 |
| Content Type | External Contribution |
| Version Type | publisher |
| Keywords | Atmospheric temperature Digital storage Evaporation Geology Moisture Parameter estimation Polarization Radar Radar imaging Radar measurement Remote sensing Soil moisture Soils Space optics Space-based radar Surface roughness Synthetic aperture radar Agricultural areas Energy flux model Ground measurements Infrared imagery Polarization ratios Spatial applications Surface backscattering Surface temperatures Soil surveys |
| Abstract | The optimal radar parameters to estimate soil moisture indicated by past research are C-band, H polarization at steep incidence angles (10 to 20 degrees). Although these parameters minimize effects of roughness and vegetation, the spatial application of space and airborne radar are limited to the near range of the swath. Aiming at the development of algorithms to broaden the range of useful data, an experiment was conducted with NASA/JPL airborne radar polarimeter (P, L and C Bands)in September 1989 in agricultural area near Fresno, California. There were two flights six days apart; ground measurements of soil moisture and surface roughness were taken on both flight dates in eight different fields. Based on first order surface backscattering models, a physically based algorithm for retrieval of soil moisture and surface roughness has been developed. It has been shown that the co-polarization ratio is sensitive to soil moisture but not to soil roughness at high incidence angles (38 to 60 degrees). The derived soil moisture was used to drive a two-layer heat and energy flux model in order to estimate evaporation from bare soils. The estimated values of evaporation for a two-week period are realistic. As the model incorporates time variations in both soil moisture and surface temperature, it could be used in conjunction with values of those parameters periodically estimated using SAR and infrared imagery, providing estimates of bare soil evaporation. |
| Area | SRE |
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDSR > Estimation of bare... |
| doc Directory Content | access |
| source Directory Content | there are no files |
| agreement Directory Content | there are no files |
| 4. Conditions of access and use | |
| data URL | http://mtc-m12.sid.inpe.br/ibi/6qtX3pFwXQZ3r59YD6/GP3DK |
| zipped data URL | http://mtc-m12.sid.inpe.br/zip/6qtX3pFwXQZ3r59YD6/GP3DK |
| Language | en |
| Target File | 1992_soares.pdf |
| User Group | administrator marciana |
| Visibility | shown |
| Read Permission | allow from all |
| Update Permission | not transferred |
| 5. Allied materials | |
| Next Higher Units | 8JMKD3MGPCW/3ER446E |
| Citing Item List | sid.inpe.br/bibdigital/2013/09.13.21.11 3 |
| Host Collection | sid.inpe.br/banon/2001/04.06.10.52 |
| 6. Notes | |
| Empty Fields | archivingpolicy archivist callnumber copyholder copyright creatorhistory descriptionlevel dissemination doi e-mailaddress edition electronicmailaddress format issn lineage mark mirrorrepository nextedition notes numberofvolumes orcid organization parameterlist parentrepositories previousedition previouslowerunit progress project publisheraddress readergroup resumeid rightsholder schedulinginformation secondarymark serieseditor session shorttitle sponsor subject tertiarymark tertiarytype type url volume |
| 7. Description control | |
| e-Mail (login) | marciana |
| update | |