pages/05_GOES_NBR.py

import ee
import geemap
import solara

# Initialize the Earth Engine client library
#ee.Initialize()

fireList = ["North Complex", "Dixie", "Cameron Peak", "August Complex"]
four_fires = solara.reactive([fireList[0]])


class Map(geemap.Map):
    def __init__(self, **kwargs):
        super().__init__(**kwargs)
        self.add_ee_data()
        self.add_plot_gui()

    def add_ee_data(self):
        # Define the coordinates of the bounding box
        bbox_coords = [[-121.616097, 39.426723], [-120.668526, 39.426723], [-120.668526, 40.030845], [-121.616097, 40.030845]]

        # Create a bounding box geometry
        NorthComplexBB = ee.Geometry.Polygon(bbox_coords)

        PREgoesCMI = ee.ImageCollection('NOAA/GOES/17/MCMIPF').filter(ee.Filter.date('2020-08-15', '2020-08-16')).mean()
        POSTgoesCMI = ee.ImageCollection('NOAA/GOES/17/MCMIPF').filter(ee.Filter.date('2020-09-15', '2020-09-16')).mean()
        preNBR = PREgoesCMI.select(['CMI_C03','CMI_C06']).normalizedDifference(['CMI_C03', 'CMI_C06']).toFloat().rename('NBR');
        postNBR = POSTgoesCMI.select(['CMI_C03','CMI_C06']).normalizedDifference(['CMI_C03', 'CMI_C06']).toFloat().rename('NBR');
        dNBR = preNBR.subtract(postNBR).select('NBR')
        dNBRclipped = dNBR.clip(NorthComplexBB)

        dNBRvisParams = {
            'min': 0.0,
            'max': 0.8,
            'palette': ['green', 'yellow','orange','red']}
        
        self.addLayer(dNBR, dNBRvisParams, "GOES dNBR")

@solara.component
def Page():
    solara.SelectMultiple("Wildfire Case Study", four_fires, fireList)
    solara.Markdown(f"**Selected**: {four_fires.value}")
    
    with solara.Column(style={"min-width": "500px"}):
        Map.element(
            center=[40, -100],
            zoom=5,
            height="600px",
        )