"Thank you for preparing such a beautiful and detailed video. It was very helpful in completing my work."
@mrs_park88039 ай бұрын
hi i was wondering did you do any radiometric correction before calculate the LST?
@lethoa74547 ай бұрын
why we should use the constants (like 0.00115 and 1.4388) for calculating LST? and why we use the constants 0.004 and 0.986 for calculating emission?
@thefishguy.4 ай бұрын
I have doubt that my study area is large ,I have to combine to image bands to get single image but I have a doubt regarding the value of two different band values.
@KiwiGirl-gr8je9 ай бұрын
This video saved me fr cuz like it seems like the GIS community likes to play fast and loose with the order of operations, every source I consulted about this process had the brackets of the equations in different places 😭anyway tysm and gb 🙏
@aquibshamshad1855Ай бұрын
Very helpful thanks
@eduardorojas2121 Жыл бұрын
Excuse me, I have a problem generating the BT variable because it gives me temperature range data that is too high and I cannot correct it, it is in lansat 9, I would appreciate some guidance
@sapamksheroda495711 ай бұрын
hi hve u solve it i am facing the same problem kindly pls help
@eduardorojas212111 ай бұрын
My solve was: i was working with landsat 9 c2lv2, what supposedly already have the reflectance and radiometric correction for the Bands (but still need processing), so i just multiply the band rasters images for the number on the metadata (the metadata in the USGC manual site), bassically i multiply the raster "((Band 10 * 0.00341802 + 149)-273.15)". to get temeperature data in celsuis, even so, i stil getting values a bit extreme. the LST on the lansat satellite calculate I think is just an approximationFor more precise data, it is necessary to use sensors at smaller scales, such as flying drones or something like that. the metadata i refere is here: www.usgs.gov/media/files/landsat-8-9-collection-2-level-2-science-product-guide
@daiqing351710 ай бұрын
I'm facing the same problem
@RoniGraphy203769 ай бұрын
Hey brother you get solution this problem
@GIS_GRAND_MASTER4 ай бұрын
Check the histogram of the BT raster and cut out outliers by adjusting the breaks to start and stop within the normal distribution bell shape
@mrs_park88039 ай бұрын
Hi sir, may I know did you do the pre-process image (atmosphere correction and geometric correction) before you do the LST calculation?
@boxoflazuardi94215 ай бұрын
just download c2 l2, read DOI.
@__KhairunaZahra3 ай бұрын
Why we use wavelenght 0.0015?
@michaelmendoza6998 Жыл бұрын
thank you very much. this is very informative. I tried doing it for my native island of Leyte in the Philippines but it results in a very unrealistic high max LST and very low min LST. I retried doing the steps provided like 8 times already and still shows the same results. Can you try doing it? See if i made a mistake somewhere.