Sebaran Spasio-Temporal Particulate Inorganic Carbon (PIC) Menggunakan Data Satelit MODIS di Perairan Pesisir Muara Kapuas, Kalimantan Barat.

Abstract

Particulate Inorganic Carbon (PIC) menjadi komponen utama siklus karbon laut secara global yang terjadi melalui proses kalsifikasi. Peningkatan PIC di perairan dapat menyebabkan penurunan efektivitas penyerapan karbon dioksida hasil fotosintesis. Penelitian ini bertujuan melakukan pemetaan dan analisis sebaran spasio-temporal PIC dari tahun 2002 – 2021, menggunakan data satelit Aqua-MODIS. Parameter yang digunakan di antaranya, data PIC, angin, curah hujan, ENSO dan IOD. Konsentrasi PIC rata-rata bulanan di perairan Muara Sungai Kapuas pada musim barat dan peralihan I memiliki rentang nilai 0,05 – 49,08 mmol/m3 dengan rata-rata 1,02 mmol/m3. Konsentrasi PIC dan angin berbanding lurus, pada musim barat dan musim timur cenderung lebih tinggi dibanding pada saat peralihan I dan peralihan II. Variabilitas konsentrasi PIC di perairan Muara Kapuas tidak memiliki hubungan nyata dengan fenomena IOD dan ENSO. Konsentrasi PIC di Muara Sungai Kapuas dipengaruhi oleh angin yang mengindikasikan pengaruh lokal angin musiman lebih dominan dibandingkan pengaruh dari parameter lain.

Particulate Inorganic Carbon (PIC) was a major component of the global ocean carbon cycle, occurring through the process of calcification. An increase in PIC in aquatic environments could lead to a decrease in the effectiveness of carbon dioxide absorption from photosynthesis. This research aimed to map and analyze the spatio-temporal distribution of PIC from 2002 to 2021 using Aqua-MODIS satellite data. The parameters used included PIC data, wind, rainfall, ENSO, and IOD. The average monthly PIC concentration in the Kapuas River Estuary during the west monsoon and first transitional season ranged from 0,0549 to 0,8 mmol/m³, and the overall average was 1,02 mmol/m³. PIC concentration and wind speed were directly proportional. Concentrations during the west Monsoon and east monsoon tended to be higher than during the first and second transitional seasons. The variability of PIC concentration in the Kapuas Estuary waters did not show a significant relationship with IOD and ENSO phenomena. The PIC concentration in the Kapuas River Estuary was influenced by wind. This indicated that the local effect of seasonal winds was more dominant than the influence of other parameters.