File:Permian triassic boundary earth mean temperature as function of log10 co2 1.png

Scotese, Christopher R  Wright, Nicky M
 

1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 3
2. 1. simulation result tmean, log co2 plot
   3. 9.12.2023 v 0000.00

import numpy as np import math import matplotlib.pyplot as plt from sklearn.linear_model import LinearRegression

co2s=np.array([450,1000,3000,5000, 10000]).flatten() tass=np.array([16.0, 19.3,24.3,26.7,30.7]).flatten()

logco2s=np.log10(co2s)

1. model = LinearRegression()

model1 = LinearRegression().fit(logco2s.reshape((-1, 1)), tass.reshape((-1, 1)))

print(f"intercept: {model1.intercept_}") print(f"slope: {model1.coef_}")

1. r_sq = model.score(x, y)
2. print(f"coefficient of determination: {r_sq}")

logco2s_new=np.arange(2,5).flatten()

1. tass_new = np.arange(0,6).reshape((-1, 1))
2. tass_new = np.arange(0,6).reshape((-1, 1))
3. tass_new = model.predict(logco2s_new.reshape((-1, 1)))

tass_new = model1.predict(logco2s_new.reshape((-1, 1)) )

plt.scatter(logco2s, tass, s=150, color="red", label="Simulations of P-T")

plt.plot(logco2s_new, tass_new, linestyle="--", color="black" , lw=3, label="Estimated T/CO2 function of P-T")

1. https://www.climate.gov/news-features/understanding-climate/climate-change-global-temperature

plt.scatter(math.log10(278), 13.9, s=250, color="green", label= "pre-industrial Earth")

plt.suptitle("Mean temperature of Earth as function of log10 (CO2 ppmv) ", fontsize=15) plt.title(" Permian-Triassic boundary 251 Ma, Celsius", fontsize=14)

plt.xticks(fontsize=14) plt.yticks(fontsize=14) plt.ylabel("Tmean of Earth (degC)", fontsize=15) plt.xlabel("log10 CO2 (ppmv) ", fontsize=15) plt.grid() plt.legend(fontsize=15) plt.show()

2. 1. Exoplasim planet running code, python3, ubuntu
4. attempt to create exoplasim restart code
   1. you can continue running
   2. based on previous run.
5. 1. 08.12.2023 0000.0006b
8. 1. convert to T21, input netcdf
   2. load one lon, lat, z grid
   3. or Tarasov glac1d grid
10. 1. MPI NOTE: if you use more than
11. 1. one processor, you cannot in most cases run MPI in root
    2. you can use even number of process in mpi: 2, 4, 6 ..
12. 1. in ubuntu you must install
13. 1. pip3 install exoplasim[netCDF4]
    2. not
    3. "sudo pip3 install exoplasim[netCDF4]"

import numpy as np import matplotlib.pyplot as plt from scipy.interpolate import interp2d import netCDF4

import exoplasim as exo

NLAT=0 NLON=0

def writeSRA(name,kcode,field,NLAT,NLON):

   label=name+'_surf_%04d.sra'%kcode
   header=[kcode,0,20170927,0,NLON,NLAT,0,0]
   fmap = field.reshape((int(NLAT*NLON/8),8))
   sheader = 
   for h in header:
       sheader+=" %11d"%h
   
   lines=[]
   i=0
   while i<NLAT*NLON/8:
       l=
       for n in fmap[i,:]:
           l+=' %9.3f'%n
       lines.append(l)
       i+=1

   text=sheader+'\n'+'\n'.join(lines)+'\n' 

   f=open(label,'w')
   f.write(text)
   f.close()
   print (label)

def writeSRA2(label,kcode,field,NLAT,NLON):

   #label=name+'_surf_%04d.sra'%kcode
   header=[kcode,0,20170927,0,NLON,NLAT,0,0]
   fmap = field.reshape((int(NLAT*NLON/8),8))
   sheader = 
   for h in header:
       sheader+=" %11d"%h
   
   lines=[]
   i=0
   while i<NLAT*NLON/8:
       l=
       for n in fmap[i,:]:
           l+=' %9.3f'%n
       lines.append(l)
       i+=1

   text=sheader+'\n'+'\n'.join(lines)+'\n' 

   f=open(label,'w')
   f.write(text)
   f.close()
   print (label)

def savenetcdf_single_frommem(outfilename1, outvarname1, xoutvalue1,xoutlats1,xoutlons1): nlat1=len(xoutlats1) nlon1=len(xoutlons1) #indata_set1=indata1 print(outfilename1) ncout1 = netCDF4.Dataset(outfilename1, 'w', format='NETCDF4') outlat1 = ncout1.createDimension('lat', nlat1) outlon1 = ncout1.createDimension('lon', nlon1) outlats1 = ncout1.createVariable('lat', 'f4', ('lat',)) outlons1 = ncout1.createVariable('lon', 'f4', ('lon',)) outvalue1 = ncout1.createVariable(outvarname1, 'f4', ('lat', 'lon',)) outvalue1.units = 'Unknown' outlats1[:] = xoutlats1 outlons1[:] = xoutlons1 outvalue1[:, :] =xoutvalue1[:] ncout1.close() return 0

def loadnetcdf_single_tomem(infilename1, invarname1): global cache_lons1 global cache_lats1 print(infilename1) inc1 = netCDF4.Dataset(infilename1) inlatname1="lat" inlonname1="lon" inlats1=inc1[inlatname1][:] inlons1=inc1[inlonname1][:] cache_lons1=inlons1 cache_lats1=inlats1 indata1_set1 = inc1[invarname1][:] dim1=indata1_set1.shape nlat1=dim1[0] nlon1=dim1[1] inc1.close() return (indata1_set1)

def create_sras(topo):

global NLAT global NLON

topo2=np.copy(topo) masko=np.copy(topo) topo2[topo2 < 1] = 0 masko[masko < 1] = 0 masko[masko > 0] = 1 grid=np.flipud(masko) name="Example" writeSRA(name,129,topo,NLAT,NLON) writeSRA(name,172,grid,NLAT,NLON) writeSRA2("topo.sra",129,topo2,NLAT,NLON) writeSRA2("landmask.sra",172,grid,NLAT,NLON) return(0)

def convert_to_t21(infilename1, outfilename1):

global NLAT global NLON

indimx=361 indimy=181 #indimx=360 #indimy=360

## t21 64x32 shapex=64 shapey=32 NLAT=shapex NLON=shapey nc = netCDF4.Dataset(infilename1)

inlats=nc['lat'][:] inlons=nc['lon'][:] #print(inlats) #print(inlons) latlen=len(inlats) lonlen=len(inlons)

#print(lonlen, latlen)

indimx=lonlen indimy=latlen

dem=nc['z'] #dem=np.flipud(dem000) dem2=np.copy(dem) #dem2[dem2 < 0] = 0 #plt.imshow(dem,cmap='gist_earth') #plt.imshow(dem2,cmap='gist_earth') #plt.show() #quit(0) lts=[85.7606, 80.2688, 74.7445, 69.2130, 63.6786, 58.1430, 52.6065, 47.0696, 41.5325,35.9951, 30.4576, 24.9199, 19.3822, 13.8445, 8.3067, 2.7689, -2.7689, -8.3067, -13.8445, -19.3822, -24.9199, -30.4576, -35.9951, -41.5325, -47.0696, -52.6065, -58.1430, -63.6786, -69.2130, -74.7445, -80.2688, -85.7606]

## lns=[0, 5.6250, 11.2500, 16.8750, 22.5000, 28.1250, 33.7500 ,39.3750, 45.0000, 50.6250, 56.2500, 61.8750, 67.5000, 73.1250, 78.7500, 84.3750, 90.0000, 95.6250, 101.2500, 106.8750, 112.5000, 118.1250, 123.7500, 129.3750, 135.0000, 140.6250, 146.2500, 151.8750, 157.5000, 163.1250, 168.7500, 174.3750, 180.0000, 185.6250, 191.2500, 196.8750, 202.5000, 208.1250, 213.7500, 219.3750, 225.0000, 230.6250, 236.2500, 241.8750, 247.5000, 253.1250, 258.7500, 264.3750, 270.0000, 275.6250, 281.2500, 286.8750, 292.5000, 298.1250, 303.7500, 309.3750, 315.0000, 320.6250, 326.2500, 331.8750, 337.5000, 343.1250, 348.7500, 354.3750]

ly2=len(lts) lx2=len(lns) shapex=lx2 shapey=ly2

#print("sheip") #print(shapex, shapey)

lons, lats = np.meshgrid(lns,lts) #print (lts) #print (lns) new_W, new_H = (shapey,shapex) xrange = lambda x: np.linspace(0, 360, x) f2 = interp2d(xrange(indimx), xrange(indimy), dem2, kind="linear") #f2 = interp2d(range(indimx), range(indimy), dem2, kind="cubic") demo = f2(xrange(shapex), xrange(shapey)) #plt.imshow(demo) #plt.show() #quit(0) f3 = interp2d(xrange(indimx), xrange(indimy), dem2, kind="linear") #masko = f3(xrange(shapex), xrange(shapey)) #topo=np.flipud(demo) topo=np.copy(demo)

#grid=np.fliplr(masko) #def savenetcdf_single_frommem(outfilename1, outvarname1, xoutvalue1,xoutlats1,xoutlons1): savenetcdf_single_frommem(outfilename1, "z", topo,lts,lns)

return(topo,lons,lats)

def load_glac1d_dem(indatafile, outdatafile, a_yr): # load dem from Tarsaov GLAC1d anno domini 2021 global NLAT global NLON yr=a_yr

lok=int(abs(yr/100-260))

# tarasov ice 26k nc = netCDF4.Dataset(indatafile1)

#print(nc) eisbase=nc['ICEM'] inlats=nc['YLATGLOBP5'][:] inlons=nc['XLONGLOB1'][:]

dem=nc['HDCB'][lok] #dem=np.flipud(dem000) #print (dem) #print (np.shape(dem)) #plt.imshow(dem,cmap='gist_earth')

savenetcdf_single_frommem(outdatafile, "z",dem,inlats,inlons) return(0)

1. 1. maybe nok

def convert_to_t42(infilename1, outfilename1): ## ONLY attempi! to create T42! global NLAT global NLON

indimx=361 indimy=181

## t42 64x32

#shapex=64 #shapey=32

shapex=128 shapey=64 #shapey=63

NLAT=shapex NLON=shapey nc = netCDF4.Dataset(infilename1)

inlats=nc['lat'][:] inlons=nc['lon'][:]

latlen=len(inlats) lonlen=len(inlons)

indimx=lonlen indimy=latlen

dem=nc['z']

#dem=np.flipud(dem000) dem2=np.copy(dem)

## test t21

tdx=360.0/shapex #tdy=180.0/shapey

tdy=(90.0-85.706)/2

minix=0.0 maksix=360-tdx maksiy=90-tdy miniy=-90+tdy

#print(90-tdy) #

#print(miniy) #print(maksiy)

#quit(-1)

#lns=np.linspace(minix, maksix, num=shapex) #lts=np.linspace(maksiy, miniy, num=shapey) ## jn WARNING 90!

lts=[87.8638, 85.0965 ,82.3129, 79.5256, 76.7369 ,73.9475 ,71.1578, 68.3678, #ok 65.5776, 62.7874, 59.9970 ,57.2066, 54.4162, 51.6257, 48.8352, 46.0447, 43.2542, 40.4636, 37.6731 ,34.8825, 32.0919, 29.3014, 26.5108, 23.7202, 20.9296, 18.1390, 15.3484 ,12.5578, 9.7671, 6.9765, 4.1859, 1.3953, -1.3953, -4.1859, -6.9765, -9.7671, -12.5578, -15.3484, -18.1390, -20.9296, -23.7202,-26.5108, -29.3014 ,-32.0919, -34.8825, -37.6731, -40.4636,-43.2542, -46.0447,-48.8352, -51.6257, -54.4162, -57.2066, -59.9970, -62.7874, -65.5776, -68.3678,-71.1578 ,-73.9475, -76.7369 ,-79.5256, -82.3129, -85.0965, -87.8638]

lns=[0.0000 ,2.8125, 5.6250, 8.4375, 11.2500, 14.0625 ,16.8750 ,19.6875, 22.5000,25.3125, 28.1250, 30.9375 ,33.7500,36.5625 ,39.3750, 42.1875, 45.0000,47.8125, 50.6250, 53.4375, 56.2500, 59.0625 ,61.8750, 64.6875, 67.5000, 70.3125, 73.1250, 75.9375, 78.7500, 81.5625, 84.3750, 87.1875, 90.0000, 92.8125, 95.6250 ,98.4375 ,101.2500, 104.0625, 106.8750, 109.6875, 112.5000, 115.3125, 118.1250, 120.9375,123.7500 ,126.5625 ,129.3750, 132.1875, 135.0000, 137.8125, 140.6250 ,143.4375, 146.2500 ,149.0625, 151.8750 ,154.6875, 157.5000, 160.3125, 163.1250, 165.9375, 168.7500, 171.5625 ,174.3750, 177.1875, 180.0000, 182.8125, 185.6250 ,188.4375, 191.2500, 194.0625, 196.8750, 199.6875, 202.5000, 205.3125, 208.1250, 210.9375, 213.7500 ,216.5625, 219.3750 ,222.1875, 225.0000, 227.8125, 230.6250 ,233.4375, 236.2500, 239.0625, 241.8750, 244.6875, 247.5000, 250.3125, 253.1250, 255.9375, 258.7500, 261.5625, 264.3750, 267.1875, 270.0000, 272.8125, 275.6250, 278.4375, 281.2500 ,284.0625 ,286.8750, 289.6875, 292.5000, 295.3125, 298.1250, 300.9375, 303.7500 ,306.5625, 309.3750, 312.1875, 315.0000, 317.8125, 320.6250, 323.4375, 326.2500, 329.0625 ,331.8750, 334.6875, 337.5000, 340.3125, 343.1250, 345.9375, 348.7500, 351.5625 ,354.3750 ,357.1875]

#lns=

#print (lts) #print (lns)

#print (len(lns),len(lts)) #quit(-1)

ly2=len(lts) lx2=len(lns) shapex=lx2 shapey=ly2

#print("sheip") #print(shapex, shapey)

lons, lats = np.meshgrid(lns,lts)

new_W, new_H = (shapey,shapex) xrange = lambda x: np.linspace(0, 360, x) f2 = interp2d(xrange(indimx), xrange(indimy), dem2, kind="linear") demo = f2(xrange(shapex), xrange(shapey)) f3 = interp2d(xrange(indimx), xrange(indimy), dem2, kind="linear") topo=demo

savenetcdf_single_frommem(outfilename1, "z", topo,lts,lns)

return(topo,lons,lats)

1. 1. exoplasim ,,,

def exo_runner_restarting(firstrun,a_input_dem1, a_gridtype, a_layers, a_years,a_timestep,a_snapshots,a_ncpus,a_eccentricity,a_obliquity,a_lonvernaleq,a_pCO2):

output_format=".nc"

a_pO2=1-a_pCO2-0.79 a_pN2=(1-0.21-a_pCO2)

print("Process input grid, to type ",a_gridtype)

if(a_gridtype=="T21"): print("T21") topo, lons, lats=convert_to_t21(a_input_dem1,"demT21.nc") if(a_gridtype=="T42"): print("T42") topo, lons, lats=convert_to_t42(a_input_dem1, "demT42.nc")

create_sras(topo)

print("Creating exoplasim object ")

testplanet= exo.Earthlike(workdir="planet_run",modelname="PLANET",ncpus=a_ncpus,resolution=a_gridtype,layers=a_layers, outputtype=output_format, crashtolerant=True)

glaciers1= { "toggle": True, "mindepth":2, "initialh":-1 }

fluxi1=1338

testplanet.configure( startemp=5772.0, flux=fluxi1,# Stellar parameters eccentricity=a_eccentricity, obliquity=a_obliquity, lonvernaleq=a_lonvernaleq, fixedorbit=True, # Orbital parameters rotationperiod=1, # Rotation topomap="topo.sra", landmap="landmask.sra", radius=1.0, gravity=9.80665, #stormclim=False,

               vegetation=2,                               #toggles vegetation module; 1 for static vegetation, 2 to allow growth
               vegaccel=1, 

seaice=True, maxsnow=-1, glaciers=glaciers1, pN2=a_pN2, pCO2=a_pCO2, pO2=a_pO2, ozone=True, # Atmosphere timestep=a_timestep, snapshots=0, ## jos a_snapshots, vie muistia! wetsoil=True, physicsfilter="gp|exp|sp", restartfile="ressus" ) # Model dynamics

testplanet.exportcfg()

runc1=1 n=0

if(firstrun==1): print("Creating first restart.") print("Running ExoPlasim ... ") testplanet.run(years=1,crashifbroken=True) lon = testplanet.inspect("lon") lat = testplanet.inspect("lat") ts =testplanet.inspect("tsa",tavg=True) tsavg=np.mean(ts)-273.15 print("Year: ",n," tsa: ",tsavg) savename = 'ressu' testplanet.finalize(savename,allyears=False,clean=False,keeprestarts=True) testplanet.save(savename)

looplen=a_years1

peen=0 runc1=1

for n in range(0,looplen): print("Loop year ",n) testplanet.modify(flux=fluxi1) #number of output times (months) in the output files testplanet.exportcfg() runc1=1

testplanet.run(years=1,crashifbroken=True)

lon = testplanet.inspect("lon") lat = testplanet.inspect("lat") ts =testplanet.inspect("tsa",tavg=True) tsavg=np.mean(ts)-273.15

print("Year: ",n," tsa: ",tsavg)

savename = 'ressu'+str(runc1) testplanet.finalize(savename,allyears=False,clean=False,keeprestarts=True) testplanet.save(savename)

print("Return.") return(0)

print(" Exoplasim simulation restart code ---")

1. 1. jn warning maybe nok

1. input_dem='./indata/indem.nc'
2. input_dem='./indata/Map22_PALEOMAP_1deg_Mid-Cretaceous_95Ma.nc'
3. input_dem='./indata/Map14_PALEOMAP_1deg_Paleocene_Eocene_Boundary_55Ma.nc'
4. input_dem='/indata/Map13_PALEOMAP_1deg_Early_Eocene_50Ma.nc'
5. input_dem='./indata/Map12_PALEOMAP_1deg_early_Middle_Eocene_45Ma.nc'
6. input_dem='./indata/Map18_PALEOMAP_1deg_Late_Cretaceous_75Ma.nc' ## OK
7. input_dem='./indata/Map20_PALEOMAP_1deg_Late_Cretaceous_85Ma.nc' ## nok
8. input_dem='./indata/Map24_PALEOMAP_1deg_Early Cretaceous_105Ma.nc' ## nok
9. input_dem='./indata/Map17_PALEOMAP_1deg_Late_Cretaceous_70Ma.nc' ##nok
   1. input_dem='./indata/Map19_PALEOMAP_1deg_Late_Cretaceous_80Ma.nc'

1. input_dem="./indata/Map16_PALEOMAP_1deg_KT_Boundary_65Ma.nc"

1. input_dem="./indata/Map43_PALEOMAP_1deg_Late_Triassic_200Ma.nc"

1. input_dem='./indata/Map19_PALEOMAP_1deg_Late_Cretaceous_80Ma.nc' ## OK

1. input_dem='./indata/Map21_PALEOMAP_1deg_Mid-Cretaceous_90Ma.nc' #90ma

input_dem='./maps1/Map49_PALEOMAP_1deg_Permo-Triassic Boundary_250Ma.nc' # PT raja co2 1600. jopa 3000-4000

1. input_dem='./indata/Map57_PALEOMAP_1deg_Late_Pennsylvanian_300Ma.nc' ## Late Pennsylcanian ice, co2 200? 250?

1. input_dem="./indata/Map56_PALEOMAP_1deg_Early_Permian_295Ma.nc"

1. indatafile1='./indata/TOPicemsk.GLACD26kN9894GE90227A6005GGrBgic.nc'

1. input_dem="origodem.nc"
2. a_yr=14500

1. 1. load_glac1d_dem(indatafile1, input_dem, 14500)

1. 1. input one de scotese palaeomap dem!
2. def convert_to_t42(infilename1, outfilename1):

1. topo, lons, lats=convert_to_t21(input_dem, "demT21.nc")

1. topo, lons, lats=convert_to_t42(input_dem, "demT42.nc")

1. plt.imshow(topo,cmap='gist_earth')

1. plt.show()

1. input_dem="./sand.nc" ##dem of desert planet

a_modelname1="planet" a_workdir1="planet_run"

a_runsteps1=200 a_years1=a_runsteps1 a_timestep1=30 a_snapshots1=0 a_ncpus1=4 a_layers1=8 a_outputtype1=".nc"

1. a_resolution1="T42"

a_resolution1="T21" a_precision1=4 a_crashtolerant1=True a_landmap1="landmask.sra" a_topomap1="topo.sra"

1. 1. nowadays ca 0 BP
2. a_eccentricity1=0.01671022
3. a_obliquity1=23.44
4. a_lonvernaleq1=102.7
5. a_pCO21=360e-6

1. 1. 10000 yrs ago

1. a_eccentricity1=0.0194246086670259
2. a_obliquity1=24.230720588
3. a_lonvernaleq1=295.26651297
4. a_pCO21=265e-6

1. 1. 14500 yrs ago

1. a_eccentricity1=0.019595
2. a_obliquity1=23.6801
3. a_lonvernaleq1=221.5
4. (229.64+213.3)/2
5. a_pCO21=210e-6

1. 1. 25000 yrs ago

1. a_eccentricity1=0.0178681374211005
2. a_obliquity1= 22.408850897
3. a_lonvernaleq1=49.92
4. a_pCO21=180e-6

1. 1. permo

a_eccentricity1=0.0167022 a_obliquity1=23.441 a_lonvernaleq1=282.7 a_pCO21=450.0e-6

1. a_pCO21=700.0e-6

1. 1. early permian 295 ma
   2. late pennsylvanian 300 ma
2. a_eccentricity1=0.01671022
3. a_obliquity1=23.441
4. a_lonvernaleq1=282.7
5. a_pCO2=250.0e-6 ## ca 200 - 250 ppmvol
6. a_pCO21=180.0e-6
7. a_pCO21=100.0e-6

1. 1. permo-triassic boundary ca 250 ma
2. a_eccentricity1=0.01671022
3. a_obliquity1=23.441
4. a_lonvernaleq1=282.7
5. a_pCO21=1600.0e-6 ## cal1600 ppmvol 3000 ? 2000-4000

print("Exoplasim ...")

1. 1. if you run simu first time, you must set
2. firstrun=1

1. firstrun=1

firstrun=1 a_years1=500

exo_runner_restarting(firstrun, input_dem, a_resolution1, a_layers1, a_years1,a_timestep1,a_snapshots1,a_ncpus1,a_eccentricity1,a_obliquity1,a_lonvernaleq1,a_pCO21)

print(".")