| 1. Identity statement | ||||
| Reference Type | Journal Article | |||
| Site | mtc-m21d.sid.inpe.br | |||
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S | |||
| Identifier | 8JMKD3MGP3W34T/46U78EH | |||
| Repository | sid.inpe.br/mtc-m21d/2022/05.24.11.40 | |||
| Last Update | 2022:05.24.11.40.30 (UTC) simone | |||
| Metadata Repository | sid.inpe.br/mtc-m21d/2022/05.24.11.40.30 | |||
| Metadata Last Update | 2023:01.03.16.46.06 (UTC) administrator | |||
| DOI | 10.3390/rs14091974 | |||
| ISSN | 2072-4292 | |||
| Citation Key | CayoBEMCAHYS:2022:MaThDe | |||
| Title | Mapping Three Decades of Changes in the Tropical Andean Glaciers Using Landsat Data Processed in the Earth Engine  | |||
| Year | 2022 | |||
| Month | May | |||
| Access Date | 2024, May 18 | |||
| Type of Work | journal article | |||
| Secondary Type | PRE PI | |||
| Number of Files | 1 | |||
| Size | 7805 KiB | |||
| 2. Context | ||||
| Author | 1 Cayo, Efrain Yury Turpo 2 Borja, Maria Olga 3 Espinoza-Villar, Raul 4 Moreno, Nicole 5 Camargo, Rodney 6 Almeida, Cláudia Maria de 7 Hopfgartner, Kathrin 8 Yalerque, Christian 9 Souza Júnior, Carlos M. | |||
| Resume Identifier | 1 2 3 4 5 6 8JMKD3MGP5W/3C9JGS3 | |||
| ORCID | 1 0000-0002-6691-9867 2 0000-0001-8029-6742 3 0000-0002-1355-9060 4 5 6 0000-0002-6523-3169 7 8 0000-0003-1798-6526 9 0000-0002-0205-6134 | |||
| Group | 1 2 3 4 5 6 DIOTG-CGCT-INPE-MCTI-GOV-BR | |||
| Affiliation | 1 Instituto del Bien Común (IBC) 2 Fundación EcoCiencia 3 Universidad Nacional Agraria La Molina 4 Instituto del Bien Común (IBC) 5 Fundación Amigos de la Naturaleza (FAN) 6 Instituto Nacional de Pesquisas Espaciais (INPE) 7 Instituto del Bien Común (IBC) 8 Instituto de Investigación en Glaciares y Ecosistemas de Montaña (INAIGEM) 9 Instituto do Homem e Meio Ambiente da Amazônia (Imazon) | |||
| Author e-Mail Address | 1 eturpo@lamolina.edu.pe 2 maolgaborja@ecociencia.org 3 respinoza@lamolina.edu.pe 4 100078614@cientifica.edu.pe 5 rcamargo@fan-bo.org 6 claustuttgart@hotmail.com 7 kathrin_hopfgartner@hotmail.com 8 cyarleque@inaigem.gob.pe 9 souzajr@imazon.org.br | |||
| Journal | Remote Sensing | |||
| Volume | 14 | |||
| Number | 9 | |||
| Pages | e1974 | |||
| Secondary Mark | B3_GEOGRAFIA B3_ENGENHARIAS_I B4_GEOCIÊNCIAS B4_CIÊNCIAS_AMBIENTAIS B5_CIÊNCIAS_AGRÁRIAS_I | |||
| History (UTC) | 2022-05-24 11:40:30 :: simone -> administrator :: 2022-05-24 11:40:31 :: administrator -> simone :: 2022 2022-05-24 11:41:53 :: simone -> administrator :: 2022 2023-01-03 16:46:06 :: administrator -> simone :: 2022 | |||
| 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 | Andean glacier retreat climate change MapBiomas Google Earth Engine | |||
| Abstract | The fast retreat of the tropical Andean glaciers (TAGs) is considered an important indicator of climate change impact on the tropics, since the TAGs provide resources to highly vulnerable mountain populations. This study aims to reconstruct the glacier coverage of the TAGs, using Landsat time-series images from 1985 to 2020, by digitally processing and classifying satellite images in the Google Earth Engine platform. We used annual reductions of the Normalized Difference Snow Index (NDSI) and spectral bands to capture the pixels with minimum snow cover. We also implemented temporal and spatial filters to have comparable maps at a multitemporal level and reduce noise and temporal inconsistencies. The results of the multitemporal analysis of this study confirm the recent and dramatic recession of the TAGs in the last three decades, in base to physical and statistical significance. The TAGs reduced from 2429.38 km(2) to 1409.11 km(2) between 1990 and 2020, representing a loss of 42% of the total glacier area. In addition, the time-series analysis showed more significant losses at altitudes below 5000 masl, and differentiated changes by slope, latitude, and longitude. We found a more significant percentage loss of glacier areas in countries with less coverage. The multiannual validation showed accuracy values of 92.81%, 96.32%, 90.32%, 97.56%, and 88.54% for the metrics F1 score, accuracy, kappa, precision, and recall, respectively. The results are an essential contribution to understanding the TAGs and guiding policies to mitigate climate change and the potential negative impact of freshwater shortage on the inhabitants and food production in the Andean region. | |||
| Area | SRE | |||
| Arrangement | urlib.net > BDMCI > Fonds > Produção a partir de 2021 > CGCT > Mapping Three Decades... | |||
| doc Directory Content | access | |||
| source Directory Content | there are no files | |||
| agreement Directory Content |
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| 4. Conditions of access and use | ||||
| data URL | http://urlib.net/ibi/8JMKD3MGP3W34T/46U78EH | |||
| zipped data URL | http://urlib.net/zip/8JMKD3MGP3W34T/46U78EH | |||
| Language | en | |||
| Target File | remotesensing-14-01974-v2.pdf | |||
| User Group | simone | |||
| Reader Group | administrator simone | |||
| Visibility | shown | |||
| Archiving Policy | allowpublisher allowfinaldraft | |||
| Update Permission | not transferred | |||
| 5. Allied materials | ||||
| Next Higher Units | 8JMKD3MGPCW/46KUATE | |||
| Citing Item List | sid.inpe.br/bibdigital/2022/04.03.22.23 2 sid.inpe.br/mtc-m21/2012/07.13.14.43.49 1 | |||
| Dissemination | WEBSCI; PORTALCAPES; MGA; COMPENDEX; SCOPUS. | |||
| Host Collection | urlib.net/www/2021/06.04.03.40 | |||
| 6. Notes | ||||
| Empty Fields | alternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress format isbn label lineage mark mirrorrepository nextedition notes parameterlist parentrepositories previousedition previouslowerunit progress project readpermission rightsholder schedulinginformation secondarydate secondarykey session shorttitle sponsor subject tertiarymark tertiarytype url | |||
| 7. Description control | ||||
| e-Mail (login) | simone | |||
| update | ||||