| 1. Identity statement | ||||
| Reference Type | Conference Paper (Conference Proceedings) | |||
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S | |||
| Site | mtc-m21d.sid.inpe.br (namespace prefix: upn:44QHRCS) | |||
| Identifier | 8JMKD3MGP3W34T/4AC98G5 | |||
| Repository | sid.inpe.br/mtc-m21d/2023/12.11.19.53 | |||
| Metadata Repository | sid.inpe.br/mtc-m21d/2023/12.11.19.53.21 | |||
| Metadata Last Update | 2024:01.02.17.16.56 (UTC) administrator | |||
| Secondary Key | INPE--PRE/ | |||
| Citation Key | ZeriMoBeOlSiZe:2023:DrMoBr | |||
| Title | Drought monitoring for Brazil's semi-arid region using flux towers measurements and remote sensing products  | |||
| Year | 2023 | |||
| Access Date | 2026, Nov. 06 | |||
| Secondary Type | PRE CI | |||
| 2. Context | ||||
| Author | 1 Zeri, Marcelo 2 Moura, Magna S. B. 3 Bezerra, Bergson Gueders 4 Oliveira, Pablo Eli Soares 5 Silva, Cláudio Moisés Santos 6 Zeri, Gisleine da Silva Cunha | |||
| Group | 1 2 3 4 5 6 CST-CST-DIPGR-INPE-MCTI-GOV-BR | |||
| Affiliation | 1 Centro Nacional de Monitoramento e Alertas de Desastres Naturais (Cemaden) 2 Embrapa 3 Universidade Federal do Rio Grande do Norte (UFRN) 4 Universidade Federal do Rio Grande do Norte (UFRN) 5 Universidade Federal do Rio Grande do Norte (UFRN) 6 Instituto Nacional de Pesquisas Espaciais (INPE) | |||
| Author e-Mail Address | 1 2 3 4 5 6 gisleine.zeri@inpe.br | |||
| Conference Name | AGU FAll Meeting | |||
| Conference Location | San Francisco, CA | |||
| Date | 11-15 Dec. 2023 | |||
| Publisher | AGU | |||
| Book Title | Proceedings | |||
| Host Collection | urlib.net/www/2021/06.04.03.40 upn:44QHRCS | |||
| History (UTC) | 2023-12-11 19:53:21 :: simone -> administrator :: 2024-01-02 17:16:56 :: administrator -> simone :: 2023 | |||
| 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 | |||
| Abstract | Drought monitoring can be carried out using in-situ instrumentation, such as flux towers, and remote sensing products. Flux towers include measurements of air temperature, solar radiation, soil moisture, rainfall, and evapotranspiration, among other variables. Remote sensing products include datasets of rainfall, soil moisture, evapotranspiration and vegetation indices. The resolutions in space and time of remote sensing products have become increasingly compatible with measurements made with flux towers. Remote sensing products for rainfall, soil moisture and vegetation indices are available in spatial resolutions of few kilometers, which is close to an eddy flux tower footprint. Regarding the temporal resolution, some remote sensing products can be obtained at daily and weekly scales, which is compatible with the sub-daily measurements from eddy covariance towers. The semi-arid climate region of northeastern Brazil is the one with the greatest vulnerability to drought events due to family farming practices and dependence on rainfed agriculture. The monitoring of droughts in the region is essential to objectively determine its impact and evolution over time, in addition to support the formulation of public policies and stakeholders actions on mitigation and adaptation efforts. In this work we present preliminary results from drought monitoring over two contrasting ecosystems over the Brazilian semiarid. One is a degraded agricultural site soon to be converted to grass and the other is over a Caatinga preserved site, the typical biome in the region characterized by short and thorny tree species adapted to dry environments. The towers were established in mid 2023 with measurements of carbon dioxide and evapotranspiration fluxes, in addition to meteorological and soil measurements. Initial results show contrasting daily cycles of fluxes, with higher evapotranspiration and net uptake of CO2 over the Caatinga site. Future analyses include the comparison of long-term time series of fluxes with remote sensing products, especially vegetation indices and soil moisture estimates. Flux towers measurements have a great potential to be used to validate and test the sensibility of remote sensing products to drought intensity and propagation. | |||
| Area | CST | |||
| Arrangement 1 | urlib.net > BDMCI > Fonds > Produção pgr ATUAIS > CST > Drought monitoring for... | |||
| Arrangement 2 | urlib.net > BDMCI > Fonds > Produção a partir de 2021 > CGCT > Drought monitoring for... | |||
| doc Directory Content | there are no files | |||
| source Directory Content | there are no files | |||
| agreement Directory Content |
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| 4. Conditions of access and use | ||||
| Language | en | |||
| User Group | simone | |||
| Visibility | shown | |||
| Update Permission | not transferred | |||
| 5. Allied materials | ||||
| Next Higher Units | 8JMKD3MGPCW/449U4PL 8JMKD3MGPCW/46KUATE | |||
| 6. Notes | ||||
| Empty Fields | archivingpolicy archivist callnumber copyholder copyright creatorhistory descriptionlevel dissemination doi e-mailaddress edition editor format isbn issn keywords label lineage mark mirrorrepository nextedition notes numberoffiles numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress project publisheraddress readergroup readpermission resumeid rightsholder schedulinginformation secondarydate secondarymark serieseditor session shorttitle size sponsor subject targetfile tertiarymark tertiarytype type url volume | |||
| 7. Description control | ||||
| e-Mail (login) | simone | |||
| update | ||||