added ndvi time series and csv

NASA-IMPACT · Aug 15, 2023 · b44ff9b · b44ff9b
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diff --git a/stories/camp-fire-burn-scar.stories.mdx b/stories/camp-fire-burn-scar.stories.mdx
@@ -52,7 +52,30 @@ taxonomy:
     In order to examine how the fire event affected the changes in surface properties, we utilized the MODIS-derived Normalized Difference Vegetation Index (NDVI), albedo and land surface temperature (LST) products for a six-year period centered on the Camp Fire event (2015-2022). We used these products which are available at 16-day intervals to compute monthly averaged spatial maps of NDVI, albedo and LST. The monthly average spatial maps were then averaged over the areas affected by the Campfire event to compute monthly mean values. 
 
     Using the above-described analysis, we determined that the monthly mean NDVI over the region affected by Camp Fire decreased from 0.65 to 0.45 following the event. Note that NDVI indicates green vegetation cover over a given location, with values of 0 and 1 indicative of bare ground and complete green vegetation cover, respectively. This change in NDVI shows a substantial 30% decrease in green vegetation cover over the region affected by the Camp Fire.
-
+  </Prose>
+</Block>    
+
+<Block>
+  <Figure>
+    <Chart
+      dataPath={new URL('./camp-fire-ndvi.csv', import.meta.url).href}
+      dateFormat="%m/%d/%Y"
+      idKey='Source'
+      xKey='Date'
+      yKey='NDVI'
+      yAxisLabel='NDVI'
+      highlightStart = '11/8/2018'
+      highlightEnd = '11/25/2018'
+      highlightLabel = 'Camp Fire'
+    />
+    <Caption>
+      Monthly-averaged MODIS-derived NDVI values over the Camp Fire domain from 2002 to 2022. The highlighted portion of the time series indicates when the Camp Fire was active.
+    </Caption>
+  </Figure>
+</Block>
+
+<Block>
+  <Prose>  
     The reduction in green vegetation cover caused by the wildfire leads to exposure of brighter underlying bare soil. In order to quantify this increase in surface brightness, we examined the monthly mean value of MODIS-derived albedo for the area affected by the Camp Fire event. The monthly mean albedo increased from 0.123 to 0.125 following the fire, or an increase of 0.05. Note that albedo values of 0 and 1 indicate none or all of the incoming sunlight being reflected back to the atmosphere, respectively. Thus, the alteration of the surface by fire results in a 5% reduction of energy deposited by sunlight onto the land surface. Even though the amount of energy deposited by the sunlight is reduced after the fire, the reduction in green vegetation cover leads to how the deposited energy is utilized. Before the fire event, part of the energy deposited is utilized by green vegetation cover for transpiration. However, after the fire, more of the energy deposited at the surface goes into heating and raising the temperature of the land surface. Thus during the daytime, loss of vegetation caused by the fire could result in an increase in land surface temperature and a reduction of moisture flux to the atmosphere. We examined if such changes in LST were observed following the fire using MODIS-derived LST product. Indeed, we found the mean daytime LST over the fire-affected areas increased by 2.51 K (4.51 ⁰F) following the Camp Fire event.
   </Prose>
 </Block>

diff --git a/stories/camp-fire-ndvi.csv b/stories/camp-fire-ndvi.csv
@@ -0,0 +1,252 @@
+Date,NDVI,Source
+1/31/2002,0.65997007,NDVI
+2/28/2002,0.640222347,NDVI
+3/31/2002,0.649205002,NDVI
+4/30/2002,0.650947672,NDVI
+5/31/2002,0.628855106,NDVI
+6/30/2002,0.604381381,NDVI
+7/31/2002,0.581549223,NDVI
+8/31/2002,0.578857457,NDVI
+9/30/2002,0.571336815,NDVI
+10/31/2002,0.56783343,NDVI
+11/30/2002,0.567843882,NDVI
+12/31/2002,0.647294692,NDVI
+1/31/2003,0.662963981,NDVI
+2/28/2003,0.658543786,NDVI
+3/31/2003,0.656242901,NDVI
+4/30/2003,0.683277625,NDVI
+5/31/2003,0.65958879,NDVI
+6/30/2003,0.616635514,NDVI
+7/31/2003,0.606296974,NDVI
+8/31/2003,0.604662995,NDVI
+9/30/2003,0.596094974,NDVI
+10/31/2003,0.571358742,NDVI
+11/30/2003,0.61610491,NDVI
+12/31/2003,0.652140316,NDVI
+1/31/2004,0.656111754,NDVI
+2/29/2004,0.647113062,NDVI
+3/31/2004,0.66174679,NDVI
+4/30/2004,0.67228431,NDVI
+5/31/2004,0.631542144,NDVI
+6/30/2004,0.606289083,NDVI
+7/31/2004,0.590192398,NDVI
+8/31/2004,0.582796386,NDVI
+9/30/2004,0.596189168,NDVI
+10/31/2004,0.622728749,NDVI
+11/30/2004,0.656345688,NDVI
+12/31/2004,0.670478358,NDVI
+1/31/2005,0.653112933,NDVI
+2/28/2005,0.664146578,NDVI
+3/31/2005,0.703373904,NDVI
+4/30/2005,0.699199364,NDVI
+5/31/2005,0.669562266,NDVI
+6/30/2005,0.643610448,NDVI
+7/31/2005,0.618703971,NDVI
+8/31/2005,0.601355858,NDVI
+9/30/2005,0.595894996,NDVI
+10/31/2005,0.599332624,NDVI
+11/30/2005,0.612381071,NDVI
+12/31/2005,0.66067768,NDVI
+1/31/2006,0.66761657,NDVI
+2/28/2006,0.667423228,NDVI
+3/31/2006,0.611107717,NDVI
+4/30/2006,0.669695124,NDVI
+5/31/2006,0.671400806,NDVI
+6/30/2006,0.632943719,NDVI
+7/31/2006,0.616768529,NDVI
+8/31/2006,0.608180088,NDVI
+9/30/2006,0.602755291,NDVI
+10/31/2006,0.592204853,NDVI
+11/30/2006,0.632744017,NDVI
+12/31/2006,0.657149114,NDVI
+1/31/2007,0.649599681,NDVI
+2/28/2007,0.652214141,NDVI
+3/31/2007,0.677652521,NDVI
+4/30/2007,0.693563091,NDVI
+5/31/2007,0.661678366,NDVI
+6/30/2007,0.626203819,NDVI
+7/31/2007,0.610045548,NDVI
+8/31/2007,0.597605982,NDVI
+9/30/2007,0.601207343,NDVI
+10/31/2007,0.612804464,NDVI
+11/30/2007,0.642412252,NDVI
+12/31/2007,0.64222094,NDVI
+1/31/2008,0.626602974,NDVI
+2/29/2008,0.645012501,NDVI
+3/31/2008,0.646343816,NDVI
+4/30/2008,0.655916671,NDVI
+5/31/2008,0.634208702,NDVI
+6/30/2008,0.611335355,NDVI
+7/31/2008,0.537798927,NDVI
+8/31/2008,0.526092856,NDVI
+9/30/2008,0.539258758,NDVI
+10/31/2008,0.574958212,NDVI
+11/30/2008,0.599237116,NDVI
+12/31/2008,0.61377451,NDVI
+1/31/2009,0.609609373,NDVI
+2/28/2009,0.605422932,NDVI
+3/31/2009,0.60042278,NDVI
+4/30/2009,0.598252871,NDVI
+5/31/2009,0.580820544,NDVI
+6/30/2009,0.565513469,NDVI
+7/31/2009,0.549294722,NDVI
+8/31/2009,0.540915297,NDVI
+9/30/2009,0.551504193,NDVI
+10/31/2009,0.603390585,NDVI
+11/30/2009,0.616009576,NDVI
+12/31/2009,0.625002364,NDVI
+1/31/2010,0.623709367,NDVI
+2/28/2010,0.615271643,NDVI
+3/31/2010,0.619341534,NDVI
+4/30/2010,0.64275192,NDVI
+5/31/2010,0.642686474,NDVI
+6/30/2010,0.600305505,NDVI
+7/31/2010,0.573934096,NDVI
+8/31/2010,0.563869092,NDVI
+9/30/2010,0.576792006,NDVI
+10/31/2010,0.57474475,NDVI
+11/30/2010,0.61197152,NDVI
+12/31/2010,0.630637038,NDVI
+1/31/2011,0.629090922,NDVI
+2/28/2011,0.541941062,NDVI
+3/31/2011,0.577919384,NDVI
+4/30/2011,0.619524504,NDVI
+5/31/2011,0.640636375,NDVI
+6/30/2011,0.631860281,NDVI
+7/31/2011,0.606798663,NDVI
+8/31/2011,0.590066838,NDVI
+9/30/2011,0.608125877,NDVI
+10/31/2011,0.644744868,NDVI
+11/30/2011,0.639514591,NDVI
+12/31/2011,0.650131798,NDVI
+1/31/2012,0.605844469,NDVI
+2/29/2012,0.616007556,NDVI
+3/31/2012,0.642903604,NDVI
+4/30/2012,0.656662125,NDVI
+5/31/2012,0.62903554,NDVI
+6/30/2012,0.599358854,NDVI
+7/31/2012,0.580898673,NDVI
+8/31/2012,0.565958503,NDVI
+9/30/2012,0.563421889,NDVI
+10/31/2012,0.594597176,NDVI
+11/30/2012,0.627027446,NDVI
+12/31/2012,0.650693077,NDVI
+1/31/2013,0.630758241,NDVI
+2/28/2013,0.625052157,NDVI
+3/31/2013,0.63579843,NDVI
+4/30/2013,0.674477628,NDVI
+5/31/2013,0.628620739,NDVI
+6/30/2013,0.609282196,NDVI
+7/31/2013,0.588021423,NDVI
+8/31/2013,0.574399941,NDVI
+9/30/2013,0.582504877,NDVI
+10/31/2013,0.591240424,NDVI
+11/30/2013,0.588227611,NDVI
+12/31/2013,0.60652947,NDVI
+1/31/2014,0.589624436,NDVI
+2/28/2014,0.613413588,NDVI
+3/31/2014,0.667692985,NDVI
+4/30/2014,0.661045265,NDVI
+5/31/2014,0.626546668,NDVI
+6/30/2014,0.587702752,NDVI
+7/31/2014,0.581678355,NDVI
+8/31/2014,0.571333231,NDVI
+9/30/2014,0.581003187,NDVI
+10/31/2014,0.594262326,NDVI
+11/30/2014,0.618543668,NDVI
+12/31/2014,0.630442275,NDVI
+1/31/2015,0.664990521,NDVI
+2/28/2015,0.651282381,NDVI
+3/31/2015,0.681837741,NDVI
+4/30/2015,0.663224502,NDVI
+5/31/2015,0.630278783,NDVI
+6/30/2015,0.597929824,NDVI
+7/31/2015,0.578334518,NDVI
+8/31/2015,0.573963789,NDVI
+9/30/2015,0.581414992,NDVI
+10/31/2015,0.588650871,NDVI
+11/30/2015,0.593521421,NDVI
+12/31/2015,0.676097261,NDVI
+1/31/2016,0.660166245,NDVI
+2/29/2016,0.64411621,NDVI
+3/31/2016,0.670262144,NDVI
+4/30/2016,0.687298039,NDVI
+5/31/2016,0.650125796,NDVI
+6/30/2016,0.617235114,NDVI
+7/31/2016,0.588616081,NDVI
+8/31/2016,0.577294718,NDVI
+9/30/2016,0.577275068,NDVI
+10/31/2016,0.623791419,NDVI
+11/30/2016,0.675395788,NDVI
+12/31/2016,0.661965413,NDVI
+1/31/2017,0.668801982,NDVI
+2/28/2017,0.656647005,NDVI
+3/31/2017,0.674089146,NDVI
+4/30/2017,0.70154771,NDVI
+5/31/2017,0.653650152,NDVI
+6/30/2017,0.618671443,NDVI
+7/31/2017,0.604109169,NDVI
+8/31/2017,0.589064214,NDVI
+9/30/2017,0.596930536,NDVI
+10/31/2017,0.593025355,NDVI
+11/30/2017,0.641081553,NDVI
+12/31/2017,0.688805381,NDVI
+1/31/2018,0.69029688,NDVI
+2/28/2018,0.680574499,NDVI
+3/31/2018,0.676598874,NDVI
+4/30/2018,0.718349467,NDVI
+5/31/2018,0.685116161,NDVI
+6/30/2018,0.640501268,NDVI
+7/31/2018,0.615786216,NDVI
+8/31/2018,0.602921821,NDVI
+9/30/2018,0.606295727,NDVI
+10/31/2018,0.591849308,NDVI
+11/30/2018,0.542185522,NDVI
+12/31/2018,0.507778922,NDVI
+1/31/2019,0.511901821,NDVI
+2/28/2019,0.393456963,NDVI
+3/31/2019,0.488407577,NDVI
+4/30/2019,0.519784652,NDVI
+5/31/2019,0.488501208,NDVI
+6/30/2019,0.480403617,NDVI
+7/31/2019,0.461257672,NDVI
+8/31/2019,0.45189473,NDVI
+9/30/2019,0.471923912,NDVI
+10/31/2019,0.461812811,NDVI
+11/30/2019,0.447895372,NDVI
+12/31/2019,0.501970845,NDVI
+1/31/2020,0.507588462,NDVI
+2/29/2020,0.53127472,NDVI
+3/31/2020,0.557622377,NDVI
+4/30/2020,0.601180581,NDVI
+5/31/2020,0.573114199,NDVI
+6/30/2020,0.531836189,NDVI
+7/31/2020,0.490962729,NDVI
+8/31/2020,0.472411113,NDVI
+9/30/2020,0.449953205,NDVI
+10/31/2020,0.447641615,NDVI
+11/30/2020,0.4673868,NDVI
+12/31/2020,0.486862682,NDVI
+1/31/2021,0.486960538,NDVI
+2/28/2021,0.553990103,NDVI
+3/31/2021,0.564767136,NDVI
+4/30/2021,0.574976718,NDVI
+5/31/2021,0.542593412,NDVI
+6/30/2021,0.501435851,NDVI
+7/31/2021,0.470304254,NDVI
+8/31/2021,0.461323573,NDVI
+9/30/2021,0.467311251,NDVI
+10/31/2021,0.505175985,NDVI
+11/30/2021,0.544664998,NDVI
+12/31/2021,0.539052632,NDVI
+1/31/2022,0.584157597,NDVI
+2/28/2022,0.562639677,NDVI
+3/31/2022,0.587380654,NDVI
+4/30/2022,0.580070396,NDVI
+5/31/2022,0.565324523,NDVI
+6/30/2022,0.541601238,NDVI
+7/31/2022,0.504218534,NDVI
+8/31/2022,0.478469424,NDVI
+9/30/2022,0.506858312,NDVI
+10/31/2022,0.540773909,NDVI
+11/30/2022,0.559441635,NDVI