Conference
Padrões de precipitação no Sul da Amazônia baseado no PERSIANN-CDR: Características e tendências ; Precipitation patterns in the south of the Amazon based on PERSIANN-CDR: Characteristics and trends
| العنوان: | Padrões de precipitação no Sul da Amazônia baseado no PERSIANN-CDR: Características e tendências ; Precipitation patterns in the south of the Amazon based on PERSIANN-CDR: Characteristics and trends |
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| المؤلفون: | Arvor, Damien, Funatsu, Beatriz M., Michot, Véronique, Dubreuil, Vincent |
| المساهمون: | Littoral, Environnement, Télédétection, Géomatique (LETG - Rennes), Littoral, Environnement, Télédétection, Géomatique UMR 6554 (LETG), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Université d'Angers (UA)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Brest (UBO)-Université de Rennes 2 (UR2), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Géographie et d'Aménagement Régional de l'Université de Nantes (IGARUN), Université de Nantes (UN)-Université de Nantes (UN)-Université de Caen Normandie (UNICAEN), Université de Nantes (UN)-Université de Nantes (UN) |
| المصدر: | Hyper Article en Ligne - Sciences de l'Homme et de la Société ; Anais do XVIII Simpósio Brasileiro de Sensoriamento Remoto -SBSR ; Anais do XVIII Simpósio Brasileiro de Sensoriamento Remoto -SBSR, 2017, Santos, Brazil |
| بيانات النشر: | HAL CCSD |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | Remote sensing, Precipitation, Long-term trends Sensoriamento remoto, precipitação, tendências climáticas, geo, envir |
| جغرافية الموضوع: | Santos, Brazil |
| Time: | Santos, Brazil |
| الوصف: | International audience Precipitation is a key climatic parameter for many anthropogenic activities, especially agriculture. Yet, its homogeneous and continuous monitoring remains challenging. That is particularly true for the Amazon region, which is sparsely inhabited and has a low density of ground-based rain gauge network. Satellite-derived estimates of precipitation are thus essential to fill up the gap of rainfall measurements in the region. The PERSIANN-CDR is a relatively new product (released in 2013), available for the period 1983-delayed present, which provides a renewed opportunity to analyse and estimate precipitation in the Amazon region, based on a long-term record. In this work, we use three decades (1983-2013) of PERSIANN-CDR daily rainfall data to characterize precipitation patterns in the southern region of the Amazon basin-which has been heavily deforested and transformed in the past decades-, and to assess trends. Our analyses confirm the potential of PERSIANN-CDR estimates to monitor rainfall in the Amazon. We also computed metrics of the rain season (onset, demise and duration) and highlighted significant trends toward a reduction of the rainy season in the Southern Amazon, mainly related to earlier demise dates. This work thus contributes to monitor possible signs of climate change in the region, and to the assessment of uncertainties in rainfall trends. |
| نوع الوثيقة: | conference object |
| اللغة: | Portuguese |
| Relation: | halshs-02439114; 10670/1.xfptqp; https://halshs.archives-ouvertes.fr/halshs-02439114/file/Arvoretal_2017_SBSR.pdf; https://halshs.archives-ouvertes.fr/halshs-02439114 |
| الاتاحة: | https://halshs.archives-ouvertes.fr/halshs-02439114/file/Arvoretal_2017_SBSR.pdf https://halshs.archives-ouvertes.fr/halshs-02439114 |
| Rights: | other ; undefined |
| رقم الانضمام: | edsbas.FE467199 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |