File:Finland temperature surface january 2001-2021-1.png

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Original file ‎(1,543 × 2,694 pixels, file size: 1.31 MB, MIME type: image/png)

Captions

Captions

Finland temperature surface january 2001-2021

Summary[edit]

Description
English: Finland temperature surface january 2001-2021
Date
Source Own work
Author Merikanto
Camera location65° 00′ 00″ N, 26° 00′ 00″ E  Heading=1° Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo


Map rectangle: lons 19/32 lats 59.5/70.5 Center: lon 25.5 lat 65 Dimensions: delta_lons 13 delta_lats 11

This image is based on NASA open data Modis monthly temperature data 2009-2021

Data is MOLT/MOD11C3.006

https://lpdaac.usgs.gov/products/mod11c3v006/

https://e4ftl01.cr.usgs.gov/MOLT/MOD11C3.006/ archive copy at the Wayback Machine

Wan, Z., S. Hook, G. Hulley. MOD11C3 MODIS/Terra Land Surface Temperature/Emissivity Monthly L3 Global 0.05Deg CMG V006. 2015, distributed by NASA EOSDIS Land Processes DAAC, https://doi.org/10.5067/MODIS/MOD11C3.006. Accessed 2021-10-23.

Windows 10 bai with gmt 6 to plot (you must set up GMT 6 path!)

rem rem draw temperature map from netcdf file rem rem Windows 10 bat file rem uses gmt 6.x rem rem v 0000.0000 rem 31.10.2021 rem

set kaption=-B+glightblue+t"Mean temp. of surface January deg C, 2001-2021"

set rect1=-R19/32/59.5/70.5

set size1=-JQ24 set annot1=-B2m2m+f20

set params1=%size1% %rect1%

gmtset PS_SCALE_X 0.5 PS_SCALE_Y 1

gmt gmtset FONT_ANNOT 16p gmt gmtset FONT_ANNOT_PRIMARY 16p gmt gmtset FONT_ANNOT_SECONDARY 16p gmt gmtset FONT_LABEL 16p

rem upscale grid, because in 180 deg is gap

set temp1=./t1_mean_21.nc set temp2=./t1_mean_21.grd

rem grdreformat %temp1% %temp2% -V

gmt makecpt -Crainbow -T-20.0/20.0/0.5 > colors1.cpt

gmt begin out png

psbasemap %params1% %kaption% -Ba2

grdimage %temp2% %params1% -Q -Ccolors1.cpt

gmt grdcontour %temp2% %params1% -W0.125p,black@60,.. -L-20/20 -C1 -A- gmt grdcontour %temp2% %params1% -W0.25p,black@20 -L-20/20 -C2 -A2+f26

pscoast %params1% -W0.15p,0/0/77 -N1/2p,100/0/0,-- -N2/0.5p,127/0/0,-- -Ia/0.25p,0/0/77 -Df

rem gmt psscale -Ccolors1.cpt -D4.5i/-1.5c/8i/0.5ch -Bxa5f5+l"T surf mean July deg C"

rem gmt psscale -Ccolors1.cpt -D4/1/8i/0.5ch -Ccolors.cpt -B:"Height(m)" psscale -DJ20i/-1.5c/8i/0.5ch -Ccolors1.cpt -B:"TJanuary"

gmt end

"R" script to preprocess year 1921 MOD11C3.006 data

    1. process modis MOD11C3 monthly temperature data
    2. to produce mean temperature of july
    3. 31.10.2021 0000.0000
    1. input: files like
    1. MOD11C3.A2000183.006.2015066033219

library(raster) library(rgdal) library(terra) library(RNetCDF)

dirlist1<-list.files("./data_jan")

lenlist1<-length(dirlist1)

for (n in 1:lenlist1)

{

failin01<-dirlist1[n]

failin1<-paste0("./data_jan/",failin01)

failout1<-paste0("./process2/","tj1_",as.character(n-1),".nc")

failin1 failout1

s1 <- sds(failin1)

t1=s1[1] t2=s1[6] t3=(t1+t2)/2 t4=t3-273.15

rr <- writeCDF(t4, failout1, overwrite=TRUE, varname="ts", longname="Surface Temperature", unit="degC")

}

current.list <- list.files(path="./process2", pattern =".nc", full.names=TRUE)

r.stack<- stack(current.list)

mean1 <- calc(r.stack, fun = mean, na.rm = T)

writeRaster(mean1, "t1_mean_21.nc", overwrite=TRUE, format="CDF", varname="T surf Jan", varunit="degC", 

       longname="Mean surface temperature of January, years 2001-2021", xname="long",   yname="lat")

Licensing[edit]

I, the copyright holder of this work, hereby publish it under the following license:
w:en:Creative Commons
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Date/TimeThumbnailDimensionsUserComment
current08:06, 31 October 2021Thumbnail for version as of 08:06, 31 October 20211,543 × 2,694 (1.31 MB)Merikanto (talk | contribs)Uploaded own work with UploadWizard

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