Introducción

Información obtenida del Automated Surface Observing System (ASOS) de los aeropuertos de todo el mundo.

Instalar paquetes y llamar librerías

#install.packages("riem")
library(riem)
# install.packages("tidyverse")
library(tidyverse)
## ── Attaching core tidyverse packages ──────────────────────── tidyverse 2.0.0 ──
## ✔ dplyr     1.2.0     ✔ readr     2.1.6
## ✔ forcats   1.0.1     ✔ stringr   1.6.0
## ✔ ggplot2   4.0.2     ✔ tibble    3.3.1
## ✔ lubridate 1.9.5     ✔ tidyr     1.3.2
## ✔ purrr     1.2.1     
## ── Conflicts ────────────────────────────────────────── tidyverse_conflicts() ──
## ✖ dplyr::filter() masks stats::filter()
## ✖ dplyr::lag()    masks stats::lag()
## ℹ Use the conflicted package (<http://conflicted.r-lib.org/>) to force all conflicts to become errors
# install.packages("ggplot2")
library(ggplot2)
#install.packages("lubridate")
library(lubridate)

Obtener y graficar la información

# PASO 1. Buscar la red (país) - Ejemplo: México, y copiar CODE
view(riem_networks())

# PASO 2. Buscar la estación (ciudad) - Ejemplo: Monterrey, y copiar ID
view(riem_stations("MX__ASOS"))

# PASO 3. Obtener información de la estación
monterrey <- riem_measures("MMMY", date_start = "2025-12-01")

# Análisis Descriptivo
summary(monterrey)
##    station              valid                          tmpf      
##  Length:2145        Min.   :2025-12-01 00:40:00   Min.   :28.40  
##  Class :character   1st Qu.:2025-12-22 16:41:00   1st Qu.:55.40  
##  Mode  :character   Median :2026-01-13 09:40:00   Median :60.80  
##                     Mean   :2026-01-13 08:53:30   Mean   :62.45  
##                     3rd Qu.:2026-02-03 18:40:00   3rd Qu.:69.80  
##                     Max.   :2026-02-25 23:40:00   Max.   :98.60  
##                                                                  
##       dwpf            relh             drct            sknt             p01i  
##  Min.   :12.20   Min.   :  9.76   Min.   :  0.0   Min.   : 0.000   Min.   :0  
##  1st Qu.:37.40   1st Qu.: 40.83   1st Qu.: 70.0   1st Qu.: 3.000   1st Qu.:0  
##  Median :48.20   Median : 61.99   Median :130.0   Median : 5.000   Median :0  
##  Mean   :46.32   Mean   : 61.01   Mean   :160.4   Mean   : 5.234   Mean   :0  
##  3rd Qu.:57.20   3rd Qu.: 81.47   3rd Qu.:290.0   3rd Qu.: 7.000   3rd Qu.:0  
##  Max.   :66.20   Max.   :100.00   Max.   :360.0   Max.   :25.000   Max.   :0  
##                                   NA's   :3                                   
##       alti            mslp           vsby             gust      
##  Min.   :29.62   Min.   :1002   Min.   : 0.120   Min.   :12.00  
##  1st Qu.:29.99   1st Qu.:1015   1st Qu.: 6.000   1st Qu.:18.00  
##  Median :30.13   Median :1020   Median : 8.000   Median :22.50  
##  Mean   :30.14   Mean   :1021   Mean   : 8.371   Mean   :22.74  
##  3rd Qu.:30.26   3rd Qu.:1025   3rd Qu.:10.000   3rd Qu.:25.75  
##  Max.   :30.69   Max.   :1101   Max.   :15.000   Max.   :48.00  
##                  NA's   :1449                    NA's   :2015   
##     skyc1              skyc2              skyc3            skyc4        
##  Length:2145        Length:2145        Length:2145        Mode:logical  
##  Class :character   Class :character   Class :character   NA's:2145     
##  Mode  :character   Mode  :character   Mode  :character                 
##                                                                         
##                                                                         
##                                                                         
##                                                                         
##      skyl1           skyl2           skyl3        skyl4        
##  Min.   :  100   Min.   :  500   Min.   : 1600   Mode:logical  
##  1st Qu.: 1500   1st Qu.: 1500   1st Qu.:20000   NA's:2145     
##  Median : 3000   Median : 7000   Median :20000                 
##  Mean   : 6529   Mean   : 7619   Mean   :17584                 
##  3rd Qu.: 8000   3rd Qu.: 8000   3rd Qu.:20000                 
##  Max.   :20000   Max.   :20000   Max.   :20000                 
##  NA's   :896     NA's   :1627    NA's   :2120                  
##    wxcodes          ice_accretion_1hr ice_accretion_3hr ice_accretion_6hr
##  Length:2145        Mode:logical      Mode:logical      Mode:logical     
##  Class :character   NA's:2145         NA's:2145         NA's:2145        
##  Mode  :character                                                        
##                                                                          
##                                                                          
##                                                                          
##                                                                          
##  peak_wind_gust peak_wind_drct peak_wind_time      feel      
##  Mode:logical   Mode:logical   Mode:logical   Min.   :27.99  
##  NA's:2145      NA's:2145      NA's:2145      1st Qu.:55.40  
##                                               Median :60.80  
##                                               Mean   :61.92  
##                                               3rd Qu.:69.80  
##                                               Max.   :94.14  
##                                                              
##     metar           snowdepth     
##  Length:2145        Mode:logical  
##  Class :character   NA's:2145     
##  Mode  :character                 
##                                   
##                                   
##                                   
## 
str(monterrey)
## tibble [2,145 × 30] (S3: tbl_df/tbl/data.frame)
##  $ station          : chr [1:2145] "MMMY" "MMMY" "MMMY" "MMMY" ...
##  $ valid            : POSIXct[1:2145], format: "2025-12-01 00:40:00" "2025-12-01 01:40:00" ...
##  $ tmpf             : num [1:2145] 53.6 53.6 53.6 53.6 51.8 51.8 50 50 48.2 48.2 ...
##  $ dwpf             : num [1:2145] 51.8 51.8 51.8 51.8 50 50 50 50 48.2 46.4 ...
##  $ relh             : num [1:2145] 93.6 93.6 93.6 93.6 93.5 ...
##  $ drct             : num [1:2145] 340 280 240 240 280 270 270 260 290 290 ...
##  $ sknt             : num [1:2145] 3 5 5 6 8 6 6 4 6 6 ...
##  $ p01i             : num [1:2145] 0 0 0 0 0 0 0 0 0 0 ...
##  $ alti             : num [1:2145] 30.2 30.2 30.2 30.2 30.2 ...
##  $ mslp             : num [1:2145] NA NA 1024 NA NA ...
##  $ vsby             : num [1:2145] 2 3 3 3 3 3 3 3 3 2 ...
##  $ gust             : num [1:2145] NA NA NA NA NA NA NA NA NA NA ...
##  $ skyc1            : chr [1:2145] "BKN" "BKN" "OVC" "BKN" ...
##  $ skyc2            : chr [1:2145] "OVC" "OVC" NA "OVC" ...
##  $ skyc3            : chr [1:2145] NA NA NA NA ...
##  $ skyc4            : logi [1:2145] NA NA NA NA NA NA ...
##  $ skyl1            : num [1:2145] 800 800 1000 500 500 500 500 500 500 500 ...
##  $ skyl2            : num [1:2145] 1200 1200 NA 800 800 800 800 800 800 800 ...
##  $ skyl3            : num [1:2145] NA NA NA NA NA NA NA NA NA NA ...
##  $ skyl4            : logi [1:2145] NA NA NA NA NA NA ...
##  $ wxcodes          : chr [1:2145] "DZ BR" "-DZ BR" "-DZ BR" "-DZ BR" ...
##  $ ice_accretion_1hr: logi [1:2145] NA NA NA NA NA NA ...
##  $ ice_accretion_3hr: logi [1:2145] NA NA NA NA NA NA ...
##  $ ice_accretion_6hr: logi [1:2145] NA NA NA NA NA NA ...
##  $ peak_wind_gust   : logi [1:2145] NA NA NA NA NA NA ...
##  $ peak_wind_drct   : logi [1:2145] NA NA NA NA NA NA ...
##  $ peak_wind_time   : logi [1:2145] NA NA NA NA NA NA ...
##  $ feel             : num [1:2145] 53.6 53.6 53.6 53.6 51.8 ...
##  $ metar            : chr [1:2145] "MMMY 010040Z 34003KT 2SM DZ BR BKN008 OVC012 12/11 A3017 RMK 60025 8/7//" "MMMY 010140Z 28005KT 3SM -DZ BR BKN008 OVC012 12/11 A3020 RMK 60015 8/7//" "MMMY 010240Z 24005KT 3SM -DZ BR OVC010 12/11 A3022 RMK SLP235 52019 942 60005 8/7// DZ INTMT" "MMMY 010342Z 24006KT 3SM -DZ BR BKN005 OVC008 12/11 A3022 RMK 60005 8/6// -DZ INTMT" ...
##  $ snowdepth        : logi [1:2145] NA NA NA NA NA NA ...
# Filtrar información del último mes
mty_ene_26 <- subset(monterrey, valid >= as.POSIXct("2026-01-01 00:00") & valid <= as.POSIXct("2026-01-31 23:59"))

# Ejercicio 1: Realizar una gráfica de barras de la temperatura promedio diario en enero en Monterrey en °C.
  
promedio <- mty_ene_26 %>%
  mutate(
    fecha = as.Date(valid),
    celcius = (tmpf - 32) * 5/9
  ) %>%
  group_by(fecha) %>%
  summarize(temp_mean = mean(celcius, na.rm = TRUE))
ggplot(promedio, aes(x = fecha, y = temp_mean)) +
  geom_col(fill = "steelblue") +
  labs(
    title = "Temperatura promedio diaria en enero en Monterrey (°C)",
    x = "Fecha",
    y = "Temperatura prom en celcius") +
  theme_minimal()