Spatio-temporal variation of the anomalies of the gravity field associated with the change in total water storage and precipitation in Lima-Callao was analyzed. GRACE (Gravity Recovery and Climate Experiment) and TRMM (Tropical Rainfall Measuring Mission) data monthly were introduced in this study. Autocorrelation, cross-correlation and decomposition analysis of the time series was performed, finding that both series present annual cycles but with different intra-annual variations. The gravitational anomalies increased and decreased in an annual cycle, positive gravitational anomalies varied from December to Ma y a nd negatives gravitational anomalies vary from June to November. Precipitation mainly presents an annual cycle, although other frequencies of lower spectral power of 6, 4 and 3 months were found, precipitation increases from August to March, decreases rapidly until May followed by a dry period from May to August. Cross correlation was applied between both time series obtaining a maximum correlation coefficient of 0.8677 for a lag of two months, this lag seems to be related to the recharge mechanisms of the total water storage, which reveals that the Lima-Callao region receives indirect recharge.
|Translated title of the contribution||Spatio-temporal variation of the change in total water storage and precipitation using GRACE and TRMM data: Lima-Callao in Peru|
|Title of host publication||20th LACCEI International Multi-Conference for Engineering, Education Caribbean Conference for Engineering and Technology|
|Subtitle of host publication||"Education, Research and Leadership in Post-Pandemic Engineering: Resilient Inclusive and Sustainable Actions", LACCEI 2022|
|Editors||Maria M. Larrondo Petrie, Jose Texier, Andrea Pena, Jose Angel Sanchez Viloria|
|Publisher||Latin American and Caribbean Consortium of Engineering Institutions|
|State||Published - 2022|
|Event||20th LACCEI International Multi-Conference for Engineering, Education Caribbean Conference for Engineering and Technology, LACCEI 2022 - Boca Raton, United States|
Duration: 18 Jul 2022 → 22 Jul 2022
|Name||Proceedings of the LACCEI international Multi-conference for Engineering, Education and Technology|
|Conference||20th LACCEI International Multi-Conference for Engineering, Education Caribbean Conference for Engineering and Technology, LACCEI 2022|
|Period||18/07/22 → 22/07/22|
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